repo stringclasses 1k
values | file_url stringlengths 96 373 | file_path stringlengths 11 294 | content stringlengths 0 32.8k | language stringclasses 1
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values | retrieved_at stringdate 2026-01-04 14:45:56 2026-01-04 18:30:23 | truncated bool 2
classes |
|---|---|---|---|---|---|---|---|---|
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter13/P263_BlockingEchoServer/src/main/java/modern/challenge/Main.java | Chapter13/P263_BlockingEchoServer/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.net.StandardProtocolFamily;
import java.nio.channels.DatagramChannel;
import java.net.StandardSocketOptions;
import java.nio.ByteBuffer;
public class Main {
private static final int... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter13/P271_ProgrammaticSWS/src/main/java/modern/challenge/Main.java | Chapter13/P271_ProgrammaticSWS/src/main/java/modern/challenge/Main.java | package modern.challenge;
import com.sun.net.httpserver.HttpServer;
import com.sun.net.httpserver.SimpleFileServer;
import com.sun.net.httpserver.SimpleFileServer.OutputLevel;
import java.net.InetSocketAddress;
import java.nio.file.Path;
public class Main {
public static void main(String[] args) {
HttpS... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter13/P266_MulticastClient/src/main/java/modern/challenge/Main.java | Chapter13/P266_MulticastClient/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.NetworkInterface;
import java.net.StandardProtocolFamily;
import java.nio.channels.DatagramChannel;
import java.net.StandardSocketOptions;
import java.nio.ByteBuffer;
import java.nio.Ch... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P115_FactoryMethodsForCollections/src/main/java/modern/challenge/Main.java | Chapter05/P115_FactoryMethodsForCollections/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import static java.util.Map.entry;
import java.util.Set;
import static java.util.stream.Collectors.collectingAndT... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P109_SummingArrays/src/main/java/module-info.java | Chapter05/P109_SummingArrays/src/main/java/module-info.java | module P109_SummingArrays {
requires jdk.incubator.vector;
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P109_SummingArrays/src/main/java/modern/challenge/Main.java | Chapter05/P109_SummingArrays/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.util.Arrays;
import jdk.incubator.vector.IntVector;
import jdk.incubator.vector.VectorMask;
import jdk.incubator.vector.VectorSpecies;
public class Main {
private static final VectorSpecies<Integer> VS256 = IntVector.SPECIES_256;
public static void sum(int x[], int y[],... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P118_SequencedCollectionsRemove/src/main/java/modern/challenge/Main.java | Chapter05/P118_SequencedCollectionsRemove/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map.Entry;
import java.util.SequencedMap;
import java.util.SequencedSet;
import java.util.SortedMap;
import... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P118_SequencedCollectionsGetFirstLast/src/main/java/modern/challenge/Main.java | Chapter05/P118_SequencedCollectionsGetFirstLast/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map.Entry;
import java.util.SequencedCollection;
import java.util.SequencedMap;
import java.util.SequencedS... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P112_VectorApiAndFma/src/main/java/module-info.java | Chapter05/P112_VectorApiAndFma/src/main/java/module-info.java | module P112_VectorApiAndFma {
requires jdk.incubator.vector;
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P112_VectorApiAndFma/src/main/java/modern/challenge/Main.java | Chapter05/P112_VectorApiAndFma/src/main/java/modern/challenge/Main.java | package modern.challenge;
import jdk.incubator.vector.FloatVector;
import jdk.incubator.vector.VectorMask;
import jdk.incubator.vector.VectorOperators;
import jdk.incubator.vector.VectorSpecies;
public class Main {
private static final VectorSpecies<Float> VS = FloatVector.SPECIES_PREFERRED;
public static f... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P108_VectorTerminology/src/main/java/module-info.java | Chapter05/P108_VectorTerminology/src/main/java/module-info.java | module P108_VectorTerminology {
requires jdk.incubator.vector;
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P108_VectorTerminology/src/main/java/modern/challenge/Main.java | Chapter05/P108_VectorTerminology/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.lang.foreign.MemorySegment;
import java.lang.foreign.Arena;
import java.lang.foreign.ValueLayout;
import java.nio.ByteOrder;
import java.util.Arrays;
import jdk.incubator.vector.DoubleVector;
import jdk.incubator.vector.FloatVector;
import jdk.incubator.vector.IntVector;
import jd... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P120_TheSkipListDS/src/main/java/modern/challenge/SkipList.java | Chapter05/P120_TheSkipListDS/src/main/java/modern/challenge/SkipList.java | package modern.challenge;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import java.util.Random;
public class SkipList {
private static final int MAX_NUMBER_OF_LAYERS = 10;
private final Node head;
private final Random rnd = new Random();
private int size;
private... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P120_TheSkipListDS/src/main/java/modern/challenge/Main.java | Chapter05/P120_TheSkipListDS/src/main/java/modern/challenge/Main.java | package modern.challenge;
public class Main {
public static void main(String[] args) {
SkipList list = new SkipList();
list.insert(4);
list.insert(3);
list.insert(2);
list.insert(1);
list.insert(8);
list.insert(5);
list.insert... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P114_NegativeEffectVectorApi/src/main/java/module-info.java | Chapter05/P114_NegativeEffectVectorApi/src/main/java/module-info.java | module P114_NegativeEffectVectorApi {
requires jdk.incubator.vector;
requires java.desktop;
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P114_NegativeEffectVectorApi/src/main/java/modern/challenge/Main.java | Chapter05/P114_NegativeEffectVectorApi/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.nio.file.Path;
import javax.imageio.ImageIO;
import jdk.incubator.vector.IntVector;
import jdk.incubator.vector.VectorOperators;
import jdk.incubator.vector.VectorSpecies;
public class Main {
... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P117_newHashMap/src/main/java/modern/challenge/Main.java | Chapter05/P117_newHashMap/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.util.HashMap;
import java.util.Map;
public class Main {
public static void main(String[] args) throws Exception {
// before JDK 19
Map<Integer, String> map1 = new HashMap<>(4);
map1.put(1, "1");
map1.put(2, "2");
map1.put(3, "3");
... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P123_TheBinomialHeapDS/src/main/java/modern/challenge/BinomialHeap.java | Chapter05/P123_TheBinomialHeapDS/src/main/java/modern/challenge/BinomialHeap.java | package modern.challenge;
import java.util.ArrayList;
import java.util.List;
public class BinomialHeap {
private Node head;
private final class Node {
private int key;
private int degree;
private Node parent;
private Node child;
private Node sibling;
public ... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P123_TheBinomialHeapDS/src/main/java/modern/challenge/Main.java | Chapter05/P123_TheBinomialHeapDS/src/main/java/modern/challenge/Main.java | package modern.challenge;
public class Main {
public static void main(String[] args) {
BinomialHeap h1 = new BinomialHeap();
h1.insert(11);
h1.insert(8);
h1.insert(24);
h1.insert(13);
h1.insert(22);
h1.insert(40);
h1.insert(31);
System.out.... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P118_SequencedCollectionsAddFirstLast/src/main/java/modern/challenge/Main.java | Chapter05/P118_SequencedCollectionsAddFirstLast/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.SequencedMap;
import java.util.SequencedSet;
import java.util.SortedMap;
import java.util.SortedSet;
import... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P129_TheUnrolledLinkedListDS_2/src/main/java/modern/challenge/UnrolledLinkedList.java | Chapter05/P129_TheUnrolledLinkedListDS_2/src/main/java/modern/challenge/UnrolledLinkedList.java | package modern.challenge;
class UnrolledLinkedList {
private final int ns;
private Node start;
private Node end;
private int size;
private final class Node {
private final int arr[];
private Node next;
private int items;
public Node(int ns) {
arr = ... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P129_TheUnrolledLinkedListDS_2/src/main/java/modern/challenge/Main.java | Chapter05/P129_TheUnrolledLinkedListDS_2/src/main/java/modern/challenge/Main.java | package modern.challenge;
public class Main {
public static void main(String[] args) {
UnrolledLinkedList list = new UnrolledLinkedList(4);
list.insert(3);
list.insert(4);
list.insert(51);
list.insert(11);
list.insert(12);
list.insert(22);
... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P125_ThePairingHeapDS/src/main/java/modern/challenge/Main.java | Chapter05/P125_ThePairingHeapDS/src/main/java/modern/challenge/Main.java | package modern.challenge;
public class Main {
public static void main(String[] args) {
PairHeap heap = new PairHeap();
heap.insert(5);
heap.insert(1);
heap.insert(7);
heap.insert(9);
System.out.println("Initial heap:");
heap.inOrder();
heap.decrea... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P125_ThePairingHeapDS/src/main/java/modern/challenge/PairHeap.java | Chapter05/P125_ThePairingHeapDS/src/main/java/modern/challenge/PairHeap.java | package modern.challenge;
public class PairHeap {
private Node root;
private Node[] tree = new Node[5];
private int size;
private final class Node {
private int key;
private Node leftChild;
private Node nextSibling;
private Node prev;
public Node(int key) {... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P127_TheSplayTreeDS/src/main/java/modern/challenge/SplayTree.java | Chapter05/P127_TheSplayTreeDS/src/main/java/modern/challenge/SplayTree.java | package modern.challenge;
import java.util.ArrayDeque;
import java.util.Queue;
class SplayTree {
private Node root;
private int count;
private final class Node {
private Node left;
private Node right;
private Node parent;
private int data;
public Node() {
... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P127_TheSplayTreeDS/src/main/java/modern/challenge/Main.java | Chapter05/P127_TheSplayTreeDS/src/main/java/modern/challenge/Main.java | package modern.challenge;
public class Main {
public static void main(String[] args) {
SplayTree st = new SplayTree();
st.insert(12);
st.insert(5);
st.insert(123);
st.insert(1);
st.insert(122);
st.insert(10);
st.insert(90);
... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P119_TheRopeDS/src/main/java/modern/challenge/Rope.java | Chapter05/P119_TheRopeDS/src/main/java/modern/challenge/Rope.java | package modern.challenge;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.Objects;
public class Rope {
public static char indexAt(Node node, int index) {
if (node == null) {
throw new IllegalArgumentException("The given ... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P119_TheRopeDS/src/main/java/modern/challenge/Main.java | Chapter05/P119_TheRopeDS/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.util.List;
public class Main {
public static void main(String[] args) {
Rope.Node I = new Rope.Node("I");
Rope.Node am = new Rope.Node("am");
Rope.Node a = new Rope.Node("a");
Rope.Node very = new Rope.Node("very");
Rope.Node cool = n... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P124_TheFibonacciHeapDS/src/main/java/modern/challenge/FibonacciHeap.java | Chapter05/P124_TheFibonacciHeapDS/src/main/java/modern/challenge/FibonacciHeap.java | package modern.challenge;
import java.util.NoSuchElementException;
public class FibonacciHeap {
private Node min;
private int nrOfItems;
private final class Node {
private Node parent;
private Node right;
private Node left;
private Node child;
private int degree... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P124_TheFibonacciHeapDS/src/main/java/modern/challenge/Main.java | Chapter05/P124_TheFibonacciHeapDS/src/main/java/modern/challenge/Main.java | package modern.challenge;
public class Main {
public static void main(String[] args) {
FibonacciHeap heap = new FibonacciHeap();
heap.insert(5);
heap.insert(1);
heap.insert(8);
heap.insert(3);
heap.insert(9);
heap.insert(0);
heap.in... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P118_SequencedCollectionsReverse/src/main/java/modern/challenge/Main.java | Chapter05/P118_SequencedCollectionsReverse/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.NavigableMap;
import java.util.SequencedMap;
impor... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P121_TheKDTreeDS/src/main/java/modern/challenge/KdTree.java | Chapter05/P121_TheKDTreeDS/src/main/java/modern/challenge/KdTree.java | package modern.challenge;
import java.util.ArrayDeque;
import java.util.Queue;
public class KdTree {
private Node root;
private Node found;
private double foundDistance;
private int visited;
private final class Node {
private final double[] coords;
private Node left;
pr... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P121_TheKDTreeDS/src/main/java/modern/challenge/Main.java | Chapter05/P121_TheKDTreeDS/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.util.Arrays;
public class Main {
public static void main(String[] args) {
double[][] coords = {
{3, 5}, {1, 4}, {5, 4}, {2, 3}, {4, 2}, {3, 2}, {5, 2}, {2, 1}, {2, 4}, {2, 5}
};
System.out.println(Arrays.toString(coords[0]));
KdTree kd = ... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P126_TheHuffmanCodingDS/src/main/java/modern/challenge/Huffman.java | Chapter05/P126_TheHuffmanCodingDS/src/main/java/modern/challenge/Huffman.java | package modern.challenge;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.NoSuchElementException;
import java.util.PriorityQueue;
public class Huffman {
private Node root;
private String str;
private StringBuilder encodedStr;
p... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P126_TheHuffmanCodingDS/src/main/java/modern/challenge/Main.java | Chapter05/P126_TheHuffmanCodingDS/src/main/java/modern/challenge/Main.java | package modern.challenge;
public class Main {
public static void main(String[] args) {
String dummyText = "aaaaaaaaaaa";
Huffman huffman = new Huffman();
huffman.tree(dummyText);
System.out.println("\nEncoded: " + huffman.encode());
System.out.println("... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P113_MultiplyingMatricesVectorApi/src/main/java/module-info.java | Chapter05/P113_MultiplyingMatricesVectorApi/src/main/java/module-info.java | module P113_MultiplyingMatricesVectorApi {
requires jdk.incubator.vector;
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P113_MultiplyingMatricesVectorApi/src/main/java/modern/challenge/Main.java | Chapter05/P113_MultiplyingMatricesVectorApi/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.util.Arrays;
import java.util.concurrent.ThreadLocalRandom;
import jdk.incubator.vector.FloatVector;
import jdk.incubator.vector.VectorSpecies;
public class Main {
private static final VectorSpecies<Float> VS = FloatVector.SPECIES_PREFERRED;
public static float[] mulMat... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P130_TheJoinAlgorithms/src/main/java/modern/challenge/Book.java | Chapter05/P130_TheJoinAlgorithms/src/main/java/modern/challenge/Book.java | package modern.challenge;
public record Book(int bookId, String title, int authorId) {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P130_TheJoinAlgorithms/src/main/java/modern/challenge/Joins.java | Chapter05/P130_TheJoinAlgorithms/src/main/java/modern/challenge/Joins.java | package modern.challenge;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
@SuppressWarnings("unchecked")
public final class Joins {
private Joins() {
throw new AssertionError("Cannot be instant... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P130_TheJoinAlgorithms/src/main/java/modern/challenge/ResultRow.java | Chapter05/P130_TheJoinAlgorithms/src/main/java/modern/challenge/ResultRow.java | package modern.challenge;
public record ResultRow(int authorId, String name, String title, int bookId) {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P130_TheJoinAlgorithms/src/main/java/modern/challenge/Main.java | Chapter05/P130_TheJoinAlgorithms/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.util.Arrays;
import java.util.List;
public class Main {
public static void main(String[] args) {
List<Author> authorsTable = Arrays.asList(
new Author(1, "Author_1"),
new Author(2, "Author_2"),
new Author(3, "Author_3"... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P130_TheJoinAlgorithms/src/main/java/modern/challenge/Author.java | Chapter05/P130_TheJoinAlgorithms/src/main/java/modern/challenge/Author.java | package modern.challenge;
public record Author(int authorId, String name) {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P128_TheIntervalTreeDS/src/main/java/modern/challenge/IntervalTree.java | Chapter05/P128_TheIntervalTreeDS/src/main/java/modern/challenge/IntervalTree.java | package modern.challenge;
import java.util.ArrayDeque;
import java.util.LinkedList;
import java.util.List;
import java.util.Queue;
public class IntervalTree {
private Node root;
public static final class Interval {
private final int min, max;
public Interval(int min, int max) {
... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P128_TheIntervalTreeDS/src/main/java/modern/challenge/Main.java | Chapter05/P128_TheIntervalTreeDS/src/main/java/modern/challenge/Main.java | package modern.challenge;
public class Main {
public static void main(String[] args) {
IntervalTree tree = new IntervalTree();
tree.insert(new IntervalTree.Interval(4, 7));
tree.insert(new IntervalTree.Interval(1, 10));
tree.insert(new IntervalTree.Interval(7, 23));
tree.... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P129_TheUnrolledLinkedListDS_1/src/main/java/modern/challenge/UnrolledLinkedList.java | Chapter05/P129_TheUnrolledLinkedListDS_1/src/main/java/modern/challenge/UnrolledLinkedList.java | package modern.challenge;
import java.util.Arrays;
public class UnrolledLinkedList {
private Node head;
private int size;
private final class Node {
private Node next;
private int[] arr;
private Node(Node next, int[] arr) {
this.next = next;
this.arr = a... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P129_TheUnrolledLinkedListDS_1/src/main/java/modern/challenge/Main.java | Chapter05/P129_TheUnrolledLinkedListDS_1/src/main/java/modern/challenge/Main.java | package modern.challenge;
public class Main {
public static void main(String[] args) {
UnrolledLinkedList list = new UnrolledLinkedList();
list.insert(new int[]{3, 4, 51});
list.insert(new int[]{11, 12, 22, 56});
list.insert(new int[]{6, 7});
list.insert(new int[]{9});
... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P122_TheZipperDS/src/main/java/modern/challenge/Main.java | Chapter05/P122_TheZipperDS/src/main/java/modern/challenge/Main.java | package modern.challenge;
import modern.challenge.zipper.Cursor;
import modern.challenge.zipper.Zipper;
import modern.challenge.tree.Node;
public class Main {
public static void main(String[] args) {
// A
// / | \
// B C D---
// / | \ \ \
... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P122_TheZipperDS/src/main/java/modern/challenge/zipper/ZipperRange.java | Chapter05/P122_TheZipperDS/src/main/java/modern/challenge/zipper/ZipperRange.java | package modern.challenge.zipper;
final class ZipperRange {
private final ZipperRange parentRange;
private final ZipNode<?> parentZipNode;
private final Zippable[] leftSiblings;
private final Zippable[] rightSiblings;
protected ZipperRange(final ZipNode<?> parentZipNode, final ZipperRange pare... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P122_TheZipperDS/src/main/java/modern/challenge/zipper/ZipNode.java | Chapter05/P122_TheZipperDS/src/main/java/modern/challenge/zipper/ZipNode.java | package modern.challenge.zipper;
import java.util.Arrays;
import java.util.Collection;
import java.util.LinkedList;
public final class ZipNode<T extends Zippable> implements Zippable {
private static final Zippable[] DUMMY = new Zippable[0];
private final T node; // wrap the original tree node
pr... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P122_TheZipperDS/src/main/java/modern/challenge/zipper/Zipper.java | Chapter05/P122_TheZipperDS/src/main/java/modern/challenge/zipper/Zipper.java | package modern.challenge.zipper;
import java.util.Collection;
@SuppressWarnings("unchecked")
public final class Zipper {
public static <T extends Zippable> Cursor<T> createZipper(final T node) {
return new Cursor<>(new ZipNode<>(node),
new ZipperRange(null, null, null, null)); // root ran... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P122_TheZipperDS/src/main/java/modern/challenge/zipper/Cursor.java | Chapter05/P122_TheZipperDS/src/main/java/modern/challenge/zipper/Cursor.java | package modern.challenge.zipper;
import java.util.Collection;
import java.util.Iterator;
@SuppressWarnings("unchecked")
public final class Cursor<T extends Zippable> {
private final ZipNode<T> zipNode; // this is a zip node wrapping your node (original node)
private final ZipperRange range;
protected... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P122_TheZipperDS/src/main/java/modern/challenge/zipper/Zippable.java | Chapter05/P122_TheZipperDS/src/main/java/modern/challenge/zipper/Zippable.java | package modern.challenge.zipper;
import java.util.Collection;
public interface Zippable {
public Collection<? extends Zippable> getChildren();
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P122_TheZipperDS/src/main/java/modern/challenge/tree/Node.java | Chapter05/P122_TheZipperDS/src/main/java/modern/challenge/tree/Node.java | package modern.challenge.tree;
import java.util.Arrays;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;
import modern.challenge.zipper.Zippable;
public class Node implements Zippable {
private final String name;
private final List<Node> children;
public Node(final String... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P109_SimpleSummingArrays/src/main/java/module-info.java | Chapter05/P109_SimpleSummingArrays/src/main/java/module-info.java | module P109_SimpleSummingArrays {
requires jdk.incubator.vector;
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P109_SimpleSummingArrays/src/main/java/modern/challenge/Main.java | Chapter05/P109_SimpleSummingArrays/src/main/java/modern/challenge/Main.java | package modern.challenge;
import jdk.incubator.vector.IntVector;
public class Main {
public static void main(String[] args) {
int[] x = new int[]{1, 2, 3, 4, 5, 6, 7, 8};
int[] y = new int[]{4, 5, 2, 5, 1, 3, 8, 7};
IntVector xVector = IntVector.fromArray(IntVector.SPECIES_25... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P116_StreamToList/src/main/java/modern/challenge/MelonRecord.java | Chapter05/P116_StreamToList/src/main/java/modern/challenge/MelonRecord.java | package modern.challenge;
public record MelonRecord(String type, float weight) {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P116_StreamToList/src/main/java/modern/challenge/MelonMarket.java | Chapter05/P116_StreamToList/src/main/java/modern/challenge/MelonMarket.java | package modern.challenge;
import java.util.List;
public record MelonMarket(List<MelonRecord> melons) {}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P116_StreamToList/src/main/java/modern/challenge/Main.java | Chapter05/P116_StreamToList/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.io.File;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class Main {
public static void main(String[] args) {
// JDK 8
List<File> roots8 = Stream.of(File.listRoots()).collect(Collectors.toList());
/... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P110_SummingArraysUnrolled/src/main/java/module-info.java | Chapter05/P110_SummingArraysUnrolled/src/main/java/module-info.java | module P110_SummingArraysUnrolled {
requires jdk.incubator.vector;
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P110_SummingArraysUnrolled/src/main/java/modern/challenge/Main.java | Chapter05/P110_SummingArraysUnrolled/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.util.Arrays;
import jdk.incubator.vector.IntVector;
import jdk.incubator.vector.VectorSpecies;
public class Main {
private static final VectorSpecies<Integer> VS256 = IntVector.SPECIES_256;
public static void sumUnrolled(int x[], int y[], int z[]) {
int width =... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P111_BenchmarkVectors/src/main/java/module-info.java | Chapter05/P111_BenchmarkVectors/src/main/java/module-info.java | module P111_BenchmarkVectors {
requires jdk.incubator.vector;
requires jmh.generator.annprocess;
requires jmh.core;
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter05/P111_BenchmarkVectors/src/main/java/modern/challenge/Main.java | Chapter05/P111_BenchmarkVectors/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.io.IOException;
import java.util.concurrent.ThreadLocalRandom;
import java.util.concurrent.TimeUnit;
import jdk.incubator.vector.IntVector;
import jdk.incubator.vector.VectorMask;
import jdk.incubator.vector.VectorSpecies;
import org.openjdk.jmh.annotations.Benchmark;
import org.o... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter12/P255_LoggingGC/src/main/java/modern/challenge/Main.java | Chapter12/P255_LoggingGC/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Logger;
public class Main {
private static final Logger logger = Logger.getLogger(Main.class.getName());
private static final List<String> strings = new ArrayList<>();
public static void main(String[] a... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P69_DateToYearMonth/src/main/java/modern/challenge/DateConverters.java | Chapter03/P69_DateToYearMonth/src/main/java/modern/challenge/DateConverters.java | package modern.challenge;
import java.time.YearMonth;
import java.time.ZoneId;
import java.util.Date;
public final class DateConverters {
private DateConverters() {
throw new AssertionError("Cannot be instantiated");
}
public static YearMonth toYearMonth(Date date) {
if (date == null) {... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P69_DateToYearMonth/src/main/java/modern/challenge/Main.java | Chapter03/P69_DateToYearMonth/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.text.ParseException;
import java.time.YearMonth;
import java.util.Date;
public class Main {
public static void main(String[] args) throws ParseException {
System.out.println("Date to YearMonth: " + DateConverters.toYearMonth(new Date()));
System.out.println(... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P78_FromMidnightToNow/src/main/java/modern/challenge/Main.java | Chapter03/P78_FromMidnightToNow/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.time.LocalDateTime;
import java.time.temporal.ChronoUnit;
public class Main {
public static void main(String[] args) {
LocalDateTime now = LocalDateTime.now();
LocalDateTime midnight = LocalDateTime.of(now.getYear(),
now.getMonth(), now.getDa... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P72_LeapYear/src/main/java/modern/challenge/DateCheckers.java | Chapter03/P72_LeapYear/src/main/java/modern/challenge/DateCheckers.java | package modern.challenge;
import java.time.Year;
import java.util.Calendar;
import java.util.GregorianCalendar;
public final class DateCheckers {
private DateCheckers() {
throw new AssertionError("Cannot be instantiated");
}
public static boolean isLeapYearV1(int year) {
if (year % 4 !=... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P72_LeapYear/src/main/java/modern/challenge/Main.java | Chapter03/P72_LeapYear/src/main/java/modern/challenge/Main.java | package modern.challenge;
public class Main {
public static void main(String[] args) {
System.out.println("-1901: " + DateCheckers.isLeapYearV1(-1901));
System.out.println("-2000: " + DateCheckers.isLeapYearV1(-2000));
System.out.println("0: " + DateCheckers.isLeapYearV1(0));
Syst... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P75_MonthFromQuarter/src/main/java/modern/challenge/DateCheckers.java | Chapter03/P75_MonthFromQuarter/src/main/java/modern/challenge/DateCheckers.java | package modern.challenge;
import java.time.LocalDate;
import java.time.Month;
import java.util.ArrayList;
import java.util.List;
public final class DateCheckers {
private DateCheckers() {
throw new AssertionError("Cannot be instantiated");
}
public static List<String> quarterMonths(LocalDate ld)... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P75_MonthFromQuarter/src/main/java/modern/challenge/Main.java | Chapter03/P75_MonthFromQuarter/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.time.LocalDate;
public class Main {
public static void main(String[] args) {
System.out.println(DateCheckers.quarterMonths(LocalDate.now()));
System.out.println();
System.out.println(DateCheckers.quarterMonths(1));
System.out.prin... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P71_YearWeekToDate/src/main/java/modern/challenge/DateConverters.java | Chapter03/P71_YearWeekToDate/src/main/java/modern/challenge/DateConverters.java | package modern.challenge;
import java.time.LocalDate;
import java.time.temporal.ChronoField;
import java.time.temporal.WeekFields;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
public final class DateConverters {
private DateConverters() {
throw new AssertionError("Cannot be ... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P71_YearWeekToDate/src/main/java/modern/challenge/Main.java | Chapter03/P71_YearWeekToDate/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.text.ParseException;
import java.time.LocalDate;
import java.util.Date;
public class Main {
public static void main(String[] args) throws ParseException {
Date date = DateConverters.fromV1(2023, 10);
System.out.println("Date: " + date);
System.out.pr... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P87_WeeksBetweenTwoDates/src/main/java/modern/challenge/DateCheckers.java | Chapter03/P87_WeeksBetweenTwoDates/src/main/java/modern/challenge/DateCheckers.java | package modern.challenge;
import java.time.LocalDateTime;
import java.time.temporal.ChronoUnit;
import java.util.Calendar;
import java.util.Date;
public final class DateCheckers {
private DateCheckers() {
throw new AssertionError("Cannot be instantiated");
}
public static long nrOfWeeks(Date sta... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P87_WeeksBetweenTwoDates/src/main/java/modern/challenge/Main.java | Chapter03/P87_WeeksBetweenTwoDates/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.time.LocalDateTime;
import java.util.Calendar;
import java.util.Date;
public class Main {
public static void main(String[] args) {
Calendar c1 = Calendar.getInstance();
c1.set(Calendar.YEAR, 2023);
c1.set(Calendar.MONTH, 2);
c1.set(Calendar.W... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P83_FirstLastDayOfWeek/src/main/java/modern/challenge/DateCheckers.java | Chapter03/P83_FirstLastDayOfWeek/src/main/java/modern/challenge/DateCheckers.java | package modern.challenge;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import static java.time.temporal.TemporalAdjusters.nextOrSame;
import static java.time.temporal.TemporalAdjusters.previousOrSame;
... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P83_FirstLastDayOfWeek/src/main/java/modern/challenge/Main.java | Chapter03/P83_FirstLastDayOfWeek/src/main/java/modern/challenge/Main.java | package modern.challenge;
public class Main {
public static void main(String[] args) {
System.out.println(DateCheckers.weekBoundariesV1(3));
System.out.println(DateCheckers.weekBoundariesV2(3));
}
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P74_FirstLastDayOfQuarter/src/main/java/modern/challenge/DateCheckers.java | Chapter03/P74_FirstLastDayOfQuarter/src/main/java/modern/challenge/DateCheckers.java | package modern.challenge;
import java.time.LocalDate;
import java.time.YearMonth;
import java.time.ZoneId;
import java.time.temporal.IsoFields;
import static java.time.temporal.IsoFields.QUARTER_OF_YEAR;
import java.time.temporal.TemporalAdjusters;
import java.util.Calendar;
import java.util.Date;
public final class ... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P74_FirstLastDayOfQuarter/src/main/java/modern/challenge/Quarter.java | Chapter03/P74_FirstLastDayOfQuarter/src/main/java/modern/challenge/Quarter.java | package modern.challenge;
import java.util.Date;
public final class Quarter {
private final Date firstDay;
private final Date lastDay;
public Quarter(Date firstDay, Date lastDay) {
this.firstDay = firstDay;
this.lastDay = lastDay;
}
public Date getFirstDay() {
return fir... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P74_FirstLastDayOfQuarter/src/main/java/modern/challenge/Main.java | Chapter03/P74_FirstLastDayOfQuarter/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.util.Date;
public class Main {
public static void main(String[] args) {
System.out.println(DateCheckers.quarterDaysV1(new Date()));
System.out.println(DateCheckers.quarterDaysV2(new Date()));
System.out.println(DateCheckers.quarterDaysV3(new... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P70_IntToYearMonth/src/main/java/modern/challenge/DateConverters.java | Chapter03/P70_IntToYearMonth/src/main/java/modern/challenge/DateConverters.java | package modern.challenge;
import java.time.YearMonth;
import java.time.temporal.ChronoField;
public final class DateConverters {
private DateConverters() {
throw new AssertionError("Cannot be instantiated");
}
public static YearMonth from(int t) {
return YearMonth.of(1970, 1).with(Chron... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P70_IntToYearMonth/src/main/java/modern/challenge/Main.java | Chapter03/P70_IntToYearMonth/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.text.ParseException;
import java.time.YearMonth;
public class Main {
public static void main(String[] args) throws ParseException {
System.out.println("YearMonth to int: " + DateConverters.to(YearMonth.now()));
System.out.println("int to YearMonth: " + DateC... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P85_QuartersBetweenTwoDates/src/main/java/modern/challenge/DateCheckers.java | Chapter03/P85_QuartersBetweenTwoDates/src/main/java/modern/challenge/DateCheckers.java | package modern.challenge;
import java.time.LocalDate;
import java.time.temporal.IsoFields;
public final class DateCheckers {
private DateCheckers() {
throw new AssertionError("Cannot be instantiated");
}
public static long nrOfQuarters(LocalDate startDate, LocalDate endDate) {
i... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P85_QuartersBetweenTwoDates/src/main/java/modern/challenge/Main.java | Chapter03/P85_QuartersBetweenTwoDates/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.time.LocalDate;
public class Main {
public static void main(String[] args) {
System.out.println(DateCheckers.nrOfQuarters(LocalDate.MIN, LocalDate.MAX));
System.out.println(DateCheckers.nrOfQuarters(
LocalDate.of(2023, 1, 1), LocalDate.of(2024, 1, ... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P82_FirstLastDayOfYear/src/main/java/modern/challenge/DateCheckers.java | Chapter03/P82_FirstLastDayOfYear/src/main/java/modern/challenge/DateCheckers.java | package modern.challenge;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import static java.time.temporal.TemporalAdjusters.firstDayOfYear;
import static java.time.temporal.TemporalAdjusters.lastDayOfYear;
import java.util.Calendar;
import java.util.Date;
pub... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P82_FirstLastDayOfYear/src/main/java/modern/challenge/Main.java | Chapter03/P82_FirstLastDayOfYear/src/main/java/modern/challenge/Main.java | package modern.challenge;
public class Main {
public static void main(String[] args) {
System.out.println(DateCheckers.fetchFirstDayOfYearV1(2020, false));
System.out.println(DateCheckers.fetchFirstDayOfYearV1(2020, true));
System.out.println(DateCheckers.fetchLastDayOfYearV1(2020, false)... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P73_QuarterOfDate/src/main/java/modern/challenge/DateCheckers.java | Chapter03/P73_QuarterOfDate/src/main/java/modern/challenge/DateCheckers.java | package modern.challenge;
import java.time.LocalDate;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.time.temporal.IsoFields;
import java.util.Calendar;
import java.util.Date;
public final class DateCheckers {
private DateCheckers() {
throw new AssertionError("Cannot be i... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P73_QuarterOfDate/src/main/java/modern/challenge/Main.java | Chapter03/P73_QuarterOfDate/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.util.Date;
public class Main {
public static void main(String[] args) {
System.out.println(DateCheckers.quarterV1(new Date()));
System.out.println(DateCheckers.quarterV2(new Date()));
System.out.println(DateCheckers.quarterV3(new Date()));
System... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P81_WeekDayName/src/main/java/modern/challenge/Main.java | Chapter03/P81_WeekDayName/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.text.DateFormatSymbols;
import java.util.stream.IntStream;
public class Main {
public static void main(String[] args) {
String[] weekdays = new DateFormatSymbols().getWeekdays();
IntStream.range(1, weekdays.length)
... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P79_SplitDateInEqualIntervals/src/main/java/modern/challenge/DateCheckers.java | Chapter03/P79_SplitDateInEqualIntervals/src/main/java/modern/challenge/DateCheckers.java | package modern.challenge;
import java.time.Duration;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;
public final class DateCheckers {
private DateCheckers() {
throw new AssertionError("Cannot be instantiated");
}
public static List<LocalDateTime> splitInEqualI... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P79_SplitDateInEqualIntervals/src/main/java/modern/challenge/Main.java | Chapter03/P79_SplitDateInEqualIntervals/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.time.LocalDateTime;
public class Main {
public static void main(String[] args) {
int n = 25;
LocalDateTime end = LocalDateTime.now();
LocalDateTime start = end.minusYears(10);
System.out.println(DateCheckers.split... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P77_Stopwatch/src/main/java/modern/challenge/MillisStopwatch.java | Chapter03/P77_Stopwatch/src/main/java/modern/challenge/MillisStopwatch.java | package modern.challenge;
import java.util.concurrent.TimeUnit;
public final class MillisStopwatch {
private long startTime;
private long stopTime;
private boolean running;
public void start() {
this.startTime = System.currentTimeMillis();
this.running = true;
}
public void ... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P77_Stopwatch/src/main/java/modern/challenge/InstantStopwatch.java | Chapter03/P77_Stopwatch/src/main/java/modern/challenge/InstantStopwatch.java | package modern.challenge;
import java.time.Instant;
import java.time.temporal.ChronoUnit;
import java.util.concurrent.TimeUnit;
public final class InstantStopwatch {
private Instant startTime;
private Instant stopTime;
private boolean running;
public void start() {
this.startTime = Instant.n... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P77_Stopwatch/src/main/java/modern/challenge/Main.java | Chapter03/P77_Stopwatch/src/main/java/modern/challenge/Main.java | package modern.challenge;
public class Main {
public static void main(String[] args) throws InterruptedException {
InstantStopwatch is = new InstantStopwatch();
is.start();
Thread.sleep(1000); // sleep 1s
long betais = is.getElapsedTime();
Thread.sleep(2... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P77_Stopwatch/src/main/java/modern/challenge/NanoStopwatch.java | Chapter03/P77_Stopwatch/src/main/java/modern/challenge/NanoStopwatch.java | package modern.challenge;
import java.util.concurrent.TimeUnit;
public final class NanoStopwatch {
private long startTime;
private long stopTime;
private boolean running;
public void start() {
this.startTime = System.nanoTime();
this.running = true;
}
public void stop() {
... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P86_ConvertCalendarToLocalDateTime/src/main/java/modern/challenge/DateConverters.java | Chapter03/P86_ConvertCalendarToLocalDateTime/src/main/java/modern/challenge/DateConverters.java | package modern.challenge;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.util.Calendar;
import java.util.Date;
public final class DateConverters {
private DateConverters() {
throw new AssertionError("Cannot be instantiated");
}
public static ... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P86_ConvertCalendarToLocalDateTime/src/main/java/modern/challenge/Main.java | Chapter03/P86_ConvertCalendarToLocalDateTime/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;
public class Main {
public static void main(String[] args) {
Calendar calendar = Calendar.getInstance();
calendar.setTime(new Date());
calendar.setTimeZone(TimeZone.getTimeZone(... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P84_MiddleOfTheMonth/src/main/java/modern/challenge/DateCheckers.java | Chapter03/P84_MiddleOfTheMonth/src/main/java/modern/challenge/DateCheckers.java | package modern.challenge;
import java.time.LocalDate;
import java.util.Calendar;
import java.util.Date;
public final class DateCheckers {
private DateCheckers() {
throw new AssertionError("Cannot be instantiated");
}
public static Date middleOfTheMonthV1(Date date) {
if(date == ... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P84_MiddleOfTheMonth/src/main/java/modern/challenge/Main.java | Chapter03/P84_MiddleOfTheMonth/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.time.LocalDate;
import java.util.Date;
public class Main {
public static void main(String[] args) {
System.out.println(DateCheckers.middleOfTheMonthV1(new Date()));
System.out.println(DateCheckers.middleOfTheMonthV2(LocalDate.now()));
}
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P76_PregnancyDueDateCalculator/src/main/java/modern/challenge/DateCheckers.java | Chapter03/P76_PregnancyDueDateCalculator/src/main/java/modern/challenge/DateCheckers.java | package modern.challenge;
import java.time.LocalDate;
import java.time.temporal.ChronoUnit;
public final class DateCheckers {
public static final int PREGNANCY_WEEKS = 40;
public static final int PREGNANCY_DAYS = PREGNANCY_WEEKS * 7;
private DateCheckers() {
throw new AssertionError("Cannot ... | java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
PacktPublishing/Java-Coding-Problems-Second-Edition | https://github.com/PacktPublishing/Java-Coding-Problems-Second-Edition/blob/47b7c834407a607580baf8e3a23c1c24c24b8bc0/Chapter03/P76_PregnancyDueDateCalculator/src/main/java/modern/challenge/Main.java | Chapter03/P76_PregnancyDueDateCalculator/src/main/java/modern/challenge/Main.java | package modern.challenge;
import java.time.LocalDate;
public class Main {
public static void main(String[] args) {
DateCheckers.pregnancyCalculator(LocalDate.now().minusDays(100));
}
}
| java | MIT | 47b7c834407a607580baf8e3a23c1c24c24b8bc0 | 2026-01-05T02:37:06.170961Z | false |
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