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What are the Pros and Cons of Reflection? | Java reflection should always be used with caution. While the reflection provides a lot of advantages, it has some disadvantages too. Let's discuss the advantages first.
Pros: Inspection of interfaces, classes, methods, and fields during runtime is possible using reflection, even without using their names during the... |
What is Instance() method? | The newInstance() method of Class class and Constructor class is used to create a new instance of the class.
The newInstance() method of Class class can invoke zero-argument constructor, whereas newInstance() method of Constructor class can invoke any number of arguments. So, Constructor class is preferred over Clas... |
What is Syntax of newInstance() method of Class class? | public T newInstance()throws InstantiationException,IllegalAccessException
Here T is the generic version. You can think of it as Object class. You will learn about generics later. |
What is Understanding javap tool? | The javap command disassembles a class file. The javap command displays information about the fields, constructors and methods present in a class file. |
What is Syntax to use javap tool? | Let's see how to use javap tool or command.
javap fully_class_name |
Can you provide an Example to use javap tool?
| javap java.lang.Object
Output:
Compiled from "Object.java"
public class java.lang.Object {
public java.lang.Object();
public final native java.lang.Class<?> getClass();
public native int hashCode();
public boolean equals(java.lang.Object);
protected native java.lang.Object clone() throws java.lang... |
Can you create a program that works as javap tool? | Following methods of java.lang.Class class can be used to display the metadata of a class.
Method: public Field[] getDeclaredFields()throws SecurityException
Description: returns an array of Field objects reflecting all the fields declared by the class or interface represented by this Class object.
Method: public ... |
Can you provide an Example of creating javap tool? | Let's create a program that works like javap tool.
import java.lang.reflect.*;
public class MyJavap{
public static void main(String[] args)throws Exception {
Class c=Class.forName(args[0]);
System.out.println("Fields........");
Field f[]=c.getDeclaredFields();
for(int... |
how to creeate your own appletviewer? | As you know well that appletviewer tool creates a frame and displays the output of applet in the frame.You can also create your frame and display the applet output. |
Can you provide an example that works like applet viewer tool? | Let's see the simple example that works like appletviewer tool. This example displays applet on the frame.
import java.applet.Applet;
import java.awt.Frame;
import java.awt.Graphics;
public class MyViewer extends Frame{
public static void main(String[] args) throws Exception{
Class c=Class.f... |
How to call private method from another class in java? | You can call the private method from outside the class by changing the runtime behaviour of the class.
With the help of java.lang.Class class and java.lang.reflect.Method class, we can call a private method from any other class. |
What are the Required methods of the Method class? | 1) public void setAccessible(boolean status) throws SecurityException sets the accessibility of the method.
2) public Object invoke(Object method, Object... args) throws IllegalAccessException, IllegalArgumentException, InvocationTargetException is used to invoke the method. |
What is the Required method of Class class? | 1) public Method getDeclaredMethod(String name,Class[] parameterTypes)throws NoSuchMethodException,SecurityException: returns a Method object that reflects the specified declared method of the class or interface represented by this Class object. |
Can you provide an Example of calling a private method from another class? | Let's see the simple example to call private method from another class.
File: A.java
public class A {
private void message(){System.out.println("hello java"); }
}
File: MethodCall.java
import java.lang.reflect.Method;
public class MethodCall{
public static void main(String[] args)throws Except... |
What is Java Date and Time? | The java.time, java.util, java.sql and java.text packages contains classes for representing date and time. Following classes are important for dealing with date in Java. |
Can you give me the list of Java 8 Date/Time API? | Java has introduced a new Date and Time API since Java 8. The java.time package contains Java 8 Date and Time classes.
-java.time.LocalDate class
-java.time.LocalTime class
-java.time.LocalDateTime class
-java.time.MonthDay class
-java.time.OffsetTime class
-java.time.OffsetDateTime class
-java.time.Clock class
-java.... |
Can you give me the list of Classical Date/Time API? | But classical or old Java Date API is also useful. Let's see the list of classical Date and Time classes.
-java.util.Date class
-java.sql.Date class
-java.util.Calendar class
-java.util.GregorianCalendar class
-java.util.TimeZone class
-java.sql.Time class
-java.sql.Timestamp class |
What are the following classes in Formatting Date and Time? | We can format date and time in Java by using the following classes:
-java.text.DateFormat class
-java.text.SimpleDateFormat class |
What is Java Date and Time APIs? | Java provide the date and time functionality with the help of two packages java.time and java.util. The package java.time is introduced in Java 8, and the newly introduced classes tries to overcome the shortcomings of the legacy java.util.Date and java.util.Calendar classes. |
What is Classical Date Time API Classes? | The primary classes before Java 8 release were:
Java.lang.System: The class provides the currentTimeMillis() method that returns the current time in milliseconds. It shows the current date and time in milliseconds from January 1st 1970.
java.util.Date: It is used to show specific instant of time, with unit of mil... |
What are the Drawbacks of existing Date/Time API's? | -Thread safety: The existing classes such as Date and Calendar does not provide thread safety. Hence it leads to hard-to-debug concurrency issues that are needed to be taken care by developers. The new Date and Time APIs of Java 8 provide thread safety and are immutable, hence avoiding the concurrency issue from develo... |
What are the following classes in New Date Time API in Java 8? | The new date API helps to overcome the drawbacks mentioned above with the legacy classes. It includes the following classes:
java.time.LocalDate: It represents a year-month-day in the ISO calendar and is useful for representing a date without a time. It can be used to represent a date only information such as a birt... |
What is Java LocalDate class? | Java LocalDate class is an immutable class that represents Date with a default format of yyyy-mm-dd. It inherits Object class and implements the ChronoLocalDate interface |
What is Java LocalDate class declaration? | Let's see the declaration of java.time.LocalDate class.
public final class LocalDate extends Object
implements Temporal, TemporalAdjuster, ChronoLocalDate, Serializable |
What are the Methods of Java LocalDate? | Methods of Java LocalDate
Method: LocalDateTime atTime(int hour, int minute)
Description: It is used to combine this date with a time to create a LocalDateTime.
Method: int compareTo(ChronoLocalDate other)
Description: It is used to compares this date to another date.
Method: boolean equals(Object obj)
Desc... |
Can you provide an example of Java LocalDate? | Program to demonstrate methods of LocalDate class such as now(), minusDays(), plusDays().
LocalDateExample1.java
import java.time.LocalDate;
public class LocalDateExample1 {
public static void main(String[] args) {
LocalDate date = LocalDate.now();
LocalDate yesterday = date.minusDay... |
What is Java LocalTime Class? | Java LocalTime class is an immutable class that represents time with a default format of hour-minute-second. It inherits Object class and implements the Comparable interface. |
What is Java LocalTime class declaration? | Let's see the declaration of java.time.LocalTime class.
public final class LocalTime extends Object
implements Temporal, TemporalAdjuster, Comparable<LocalTime>, Serializable |
What are the Methods of Java LocalTime Class? | Methods of Java LocalTime Class
Method: LocalDateTime atDate(LocalDate date)
Description: It is used to combine this time with a date to create a LocalDateTime.
Method: int compareTo(LocalTime other)
Description: It is used to compare this time to another time.
Method: String format(DateTimeFormatter formatter... |
Can you provide an example of Java LocalTime: now()? | LocalTimeExample1.java
import java.time.LocalTime;
public class LocalTimeExample1 {
public static void main(String[] args) {
LocalTime time = LocalTime.now();
System.out.println(time);
}
}
Output:
15:19:47.459 |
Can you provide an example of Java LocalTime: of()? | LocalTimeExample2.java
import java.time.LocalTime;
public class LocalTimeExample2 {
public static void main(String[] args) {
LocalTime time = LocalTime.of(10,43,12);
System.out.println(time);
}
}
Output:
10:43:12 |
Can you provide an example of Java localtime minusHours() and minusMinutes()? | LocalTimeExample3.java
import java.time.LocalTime;
public class LocalTimeExample3 {
public static void main(String[] args) {
LocalTime time1 = LocalTime.of(10,43,12);
System.out.println(time1);
LocalTime time2=time1.minusHours(2);
LocalTime time3=time2.minusMinutes(34);
System.out.p... |
Can you provide an example of Java localtime : plusHours() and plusMinutes()? | LocalTimeExample5.java
import java.time.*;
import java.time.temporal.ChronoUnit;
public class LocalTimeExample5 {
public static void main(String... args) {
ZoneId zone1 = ZoneId.of("Asia/Kolkata");
ZoneId zone2 = ZoneId.of("Asia/Tokyo");
LocalTime time1 = LocalTime.now(zone1);
System.ou... |
Can you provide an example of Java LocalTime? | import java.time.LocalTime;
public class LocalTimeExample1 {
public static void main(String[] args) {
LocalTime time = LocalTime.now();
System.out.println(time);
}
}
Output:
15:19:47.459 |
What is Java LocalDateTime class? | Java LocalDateTime class is an immutable date-time object that represents a date-time, with the default format as yyyy-MM-dd-HH-mm-ss.zzz. It inherits object class and implements the ChronoLocalDateTime interface. |
What is Java LocalDateTime class declaration? | Let's see the declaration of java.time.LocalDateTime class.
public final class LocalDateTime extends Object
implements Temporal, TemporalAdjuster, ChronoLocalDateTime<LocalDate>, Serializable |
What are the Methods of Java local DateTime? | Methods of Java LocalDateTime
Method: String format(DateTimeFormatter formatter)
Description: It is used to format this date-time using the specified formatter.
Method: int get(TemporalField field)
Description: It is used to get the value of the specified field from this date-time as an int.
Method: LocalDateT... |
Can you provide an example of Java localDateTime? | import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
public class LocalDateTimeExample1 {
public static void main(String[] args) {
LocalDateTime now = LocalDateTime.now();
System.out.println("Before Formatting: " + now);
DateTimeFormatter format = DateTimeFo... |
Can you provide an example of Java localDateTime: now()? | import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
public class LocalDateTimeExample2 {
public static void main(String[] args) {
LocalDateTime datetime1 = LocalDateTime.now();
DateTimeFormatter format = DateTimeFormatter.ofPattern("dd-MM-yyyy HH:mm:ss");
String formatDa... |
Java LocalDateTime Example: get() Can you provide an example of Java localDateTime: get()? | import java.time.LocalDateTime;
import java.time.temporal.ChronoField;
public class LocalDateTimeExample3 {
public static void main(String[] args) {
LocalDateTime a = LocalDateTime.of(2017, 2, 13, 15, 56);
System.out.println(a.get(ChronoField.DAY_OF_WEEK));
System.out.println(a.get(ChronoFie... |
Can you provide an example of Java localDateTime: minusDays()? | import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
public class LocalDateTimeExample4 {
public static void main(String[] args) {
LocalDateTime datetime1 = LocalDateTime.of(2017, 1, 14, 10, 34);
LocalDateTime datetime2 = datetime1.minusDays(100);
System.out.println("Before Forma... |
Can you provide an example of Java localDateTime: plusDays()?
| import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
public class LocalDateTimeExample5 {
public static void main(String[] args) {
LocalDateTime datetime1 = LocalDateTime.of(2017, 1, 14, 10, 34);
LocalDateTime datetime2 = datetime1.plusDays(120);
System.out.println("Before Format... |
What is Java MonthDay Class? | Java MonthDay class is an immutable date-time object that represents the combination of a month and day-of-month. It inherits Object class and implements the Comparable interface. |
What is Java MonthDay Class Declaration? | Let's see the declaration of java.time.MonthDay class.
public final class MonthDay extends Object
implements TemporalAccessor, TemporalAdjuster, Comparable<MonthDay>, Serializable |
What are the Methods of Java MonthDay Class? | Methods of Java MonthDay Class
Method: LocalDate atYear(int year)
Description: It is used to combine this month-day with a year to create a LocalDate.
Method: String format(DateTimeFormatter formatter)
Description: It is used to format this month-day using the specified formatter.
Method: int get(TemporalField... |
Can you provide an example of Java MonthDay Class? | MonthDayExample1.java
import java.time.*;
public class MonthDayExample1 {
public static void main(String[] args) {
MonthDay month = MonthDay.now();
LocalDate date = month.atYear(1994);
System.out.println(date);
}
}
Output:
1994-01-17 |
Can you provide an example of Java MonthDay Class: isValidYear()? | MonthDayExample2.java
import java.time.*;
public class MonthDayExample2 {
public static void main(String[] args) {
MonthDay month = MonthDay.now();
boolean b = month.isValidYear(2012);
System.out.println(b);
}
}
Output:
true |
Can you provide an example of Java MonthDay Class: get()? | MonthDayExample3.java
import java.time.*;
import java.time.temporal.*;
public class MonthDayExample3{
public static void main(String[] args) {
MonthDay month = MonthDay.now();
long n = month.get(ChronoField.MONTH_OF_YEAR);
System.out.println(n);
}
}
Output:
1 |
Can you provide an example of Java MonthDay Class: range()? | MonthDayExample4.java
import java.time.*;
import java.time.temporal.*;
public class MonthDayExample4 {
public static void main(String[] args) {
MonthDay month = MonthDay.now();
ValueRange r1 = month.range(ChronoField.MONTH_OF_YEAR);
System.out.println(r1);
ValueRange r2 = month.range(Ch... |
What is Java OffsetTime Class Declaration? | Let's see the declaration of java.time.OffsetTime class.
public final class OffsetTime extends Object
implements Temporal, TemporalAdjuster, Comparable<OffsetTime>, Serializable |
What are the Methods of Java OffsetTime Class?
| Methods of Java OffsetTime Class
Method: String format(DateTimeFormatter formatter)
Description: It is used to format this time using the specified formatter.
Method: int get(TemporalField field)
Description: It is used to get the value of the specified field from this time as an int.
Method: int getHour()
De... |
Can you provide an example of Java OffsetTime class?
| OffsetTimeExample1.java
import java.time.OffsetTime;
import java.time.temporal.ChronoField;
public class OffsetTimeExample1 {
public static void main(String[] args) {
OffsetTime offset = OffsetTime.now();
int h = offset.get(ChronoField.HOUR_OF_DAY);
System.out.println(h);
int m = offset... |
What is Java OffsetDateTime Class?
| Java OffsetDateTime class is an immutable representation of a date-time with an offset. It inherits Object class and implements the Comparable interface.
OffsetDateTime class is used to store the date and time fields, to a precision of nanoseconds. |
What is the class declaration for Java OffsetDateTime? | Let's see the declaration of java.time.OffsetDateTime class.
public final class OffsetDateTime extends Object
implements Temporal, TemporalAdjuster, Comparable<OffsetDateTime>, Serializable |
What are the Methods of Java OffsetDateTime Class? | Java OffsetDateTime class is an immutable representation of a date-time with an offset. It inherits Object class and implements the Comparable interface.
OffsetDateTime class is used to store the date and time fields, to a precision of nanoseconds. |
Can you provide an example of Java OffsetDateTime Class?
| import java.time.OffsetDateTime;
public class OffsetDateTimeExample1 {
public static void main(String[] args) {
OffsetDateTime offsetDT = OffsetDateTime.now();
System.out.println(offsetDT.getDayOfMonth());
}
}
Output:
18 |
What is Java Clock class?
| Java Clock class is used to provide an access to the current, date and time using a time zone. It inherits the Object class.
Because all date-time classes contain a now() function that uses the system clock in the default time zone, using the Clock class is not required. The aim of the Clock class is to allow you to p... |
What is the class declaration for Java Clock class? | Let's see the declaration of java.time.Clock class.
public abstract class Clock extends Object |
What are the Methods of Java OffsetDateTime Class? | Methods of Java OffsetDateTime Class
Method: int get(TemporalField field)
Description: It is used to get the value of the specified field from this date-time as an int.
Method: int getDayOfMonth()
Description: It is used to get the day-of-month field.
Method: iint getDayOfYear()
Description: It is used to ... |
Can you provide an example of Java OffsetDateTime Class: getDayOfMonth()?
| OffsetDateTimeExample1.java
import java.time.OffsetDateTime;
public class OffsetDateTimeExample1 {
public static void main(String[] args) {
OffsetDateTime offsetDT = OffsetDateTime.now();
System.out.println(offsetDT.getDayOfMonth());
}
}
Output:
18 |
Can you provide an example of Java OffsetDateTime Class: getDayOfYear()? | OffsetDateTimeExample2.java
import java.time.OffsetDateTime;
public class OffsetDateTimeExample2 {
public static void main(String[] args) {
OffsetDateTime offsetDT = OffsetDateTime.now();
System.out.println(offsetDT.getDayOfYear());
}
}
Output:
18 |
Can you provide an example of Java OffsetDateTime Class: getDayOfWeek()? | OffsetDateTimeExample3.java
import java.time.OffsetDateTime;
public class OffsetDateTimeExample3 {
public static void main(String[] args) {
OffsetDateTime offsetDT = OffsetDateTime.now();
System.out.println(offsetDT.getDayOfWeek());
}
}
Output:
WEDNESDAY |
Can you provide an example of Java OffsetDateTime Class: toLocalDate()?
| OffsetDateTimeExample4.java
import java.time.OffsetDateTime;
public class OffsetDateTimeExample4 {
public static void main(String[] args) {
OffsetDateTime offsetDT = OffsetDateTime.now();
System.out.println(offsetDT.toLocalDate());
}
}
Output:
2017-01-18 |
Can you provide an example of Java OffsetDateTime Class: minusDays()?
| OffsetDateTimeExample5.java
import java.time.OffsetDateTime;
public class OffsetDateTimeExample5 {
public static void main(String[] args) {
OffsetDateTime offset = OffsetDateTime.now();
OffsetDateTime value = offset.minusDays(240);
System.out.println(value);
}
}
Output:
... |
Can you provide an example of Java OffsetDateTime Class: plusDays()?
| OffsetDateTimeExample6.java
import java.time.OffsetDateTime;
public class OffsetDateTimeExample6 {
public static void main(String[] args) {
OffsetDateTime offset = OffsetDateTime.now();
OffsetDateTime value = offset.plusDays(240);
System.out.println(value);
}
}
Output:
2... |
What is Java Clock class?
| Java Clock class is used to provide an access to the current, date and time using a time zone. It inherits the Object class.
Because all date-time classes contain a now() function that uses the system clock in the default time zone, using the Clock class is not required. The aim of the Clock class is to allow you to... |
What is the class declaration for Java Clock Class?
| et's see the declaration of java.time.Clock class.
public abstract class Clock extends Object |
What are the Methods of Java Clock Class?
| Methods of Java Clock Class
Method: abstract ZoneId getZone()
Description: It is used to get the time-zone being used to create dates and times.
Method: abstract Instant instant()
Description: It is used to get the current instant of the clock.
Method: static Clock offset(Clock baseClock, Duration offsetDu... |
Can you provide an example of Java Clock class: getZone()?
| ClockExample1.java
import java.time.Clock;
public class ClockExample1 {
public static void main(String[] args) {
Clock c = Clock.systemDefaultZone();
System.out.println(c.getZone());
}
}
Output:
Asia/Calcutta
|
Can you provide an example of Java Clock class: instant()?
| ClockExample2.java
import java.time.Clock;
public class ClockExample2 {
public static void main(String[] args) {
Clock c = Clock.systemUTC();
System.out.println(c.instant());
}
}
Output:
2017-01-14T07:11:07.748Z |
Can you provide an example of Java Clock class: systemUTC()?
| ClockExample3.java
import java.time.Clock;
public class ClockExample3 {
public static void main(String[] args) {
Clock c = Clock.systemUTC();
System.out.println(c.instant());
}
}
Output:
2017-01-14T07:11:07.748Z |
Can you provide an example of Java Clock class: offset()?
| ClockExample4.java
import java.time.Clock;
import java.time.Duration;
public class ClockExample4 {
public static void main(String[] args) {
Clock c = Clock.systemUTC();
Duration d = Duration.ofHours(5);
Clock clock = Clock.offset(c, d);
System.out.println(clock.instant());
... |
What is Java ZonedDateTime class?
| Java ZonedDateTime class is an immutable representation of a date-time with a time-zone. It inherits Object class and implements the ChronoZonedDateTime interface.
ZonedDateTime class is used to store all date and time fields, to a precision of nanoseconds, and a time-zone with a zone offset used to handle ambiguous... |
What is the class declaration for Java ZonedDateTime class?
| Let's see the declaration of java.time.ZonedDateTime class.
public final class ZonedDateTime extends Object
implements Temporal, ChronoZonedDateTime<LocalDate>, Serializable |
What are the Methods of Java ZonedDateTime?
| Methods of Java ZonedDateTime
Method: String format(DateTimeFormatter formatter)
Description: It is used to format this date-time using the specified formatter.
Method: int get(TemporalField field)
Description: It is used to get the value of the specified field from this date-time as an int.
Method: ZoneId... |
Can you provide an example of Java ZonedDateTime class?
| import java.time.ZonedDateTime;
public class ZonedDateTimeExample1{
public static void main(String[] args) {
ZonedDateTime zone = ZonedDateTime.parse("2016-10-05T08:20:10+05:30[Asia/Kolkata]");
System.out.println(zone);
}
}
Output:
2016-10-05T08:20:10+05:30[Asia/Kolkata]
|
What is Java ZoneId Class?
| Java ZoneId class specifies a time zone identifier and provides a rule for converting between an Instant and a LocalDateTime. It inherits Object class and implements the Serializable interface.
There are two sorts of ID:
Fixed offsets are fully resolved offsets from UTC/Greenwich that apply to all local date-time... |
What is the class declaration for Java Zoneld Class?
| Let's see the declaration of java.time.ZoneId class.
public abstract class ZoneId extends Object implements Serializable
To allow for the use of short time-zone names, a zone map overrides are employed. In java.util.TimeZone, the usage of short zone IDs is discouraged. The IDs can still be utilised using the of(S... |
What are the Methods of Java ZoneId Class?
| Methods of Java ZoneId Class
Method: String getDisplayName(TextStyle style, Locale locale)
Description: It s used to get the textual representation of the zone, such as 'India Time' or '+05:30'.
Method: abstract String getId()
Description: It is used to get the unique time-zone ID.
Method: static ZoneId of... |
Can you provide an example of Java Zoneld Class?
| ZoneIdExample1.java
import java.time.*;
public class ZoneIdExample1 {
public static void main(String... args) {
ZoneId zoneid1 = ZoneId.of("Asia/Kolkata");
ZoneId zoneid2 = ZoneId.of("Asia/Tokyo");
LocalTime id1 = LocalTime.now(zoneid1);
LocalTime id2 = LocalTime.now(zoneid2);
... |
What is Java ZoneOffset class?
| Java ZoneOffset class
Java ZoneOffset class is used to represent the fixed zone offset from UTC time zone. It inherits the ZoneId class and implements the Comparable interface.
The ZoneOffset class declares three constants:
MAX: It is the maximum supported zone offsets.
MIN: It is the minimum supported zone offse... |
What is the class declaration for Java ZoneOffset?
| public final class ZoneOffset extends ZoneId
implements TemporalAccessor, TemporalAdjuster, Comparable<ZoneOffset>, Serializable |
What are the Methods of Java ZoneOffset ?
| Method: Temporal adjustInto(Temporal temporal)
Description: It is used to adjust the specified temporal object to have the same offset as this object.
Method: int get(TemporalField field)
Description: It is used to get the value of the specified field from this offset as an int.
Method: boolean isSupported(Temporal... |
Can you provide an example of Java ZoneOffset?
| import java.time.*;
import java.time.temporal.Temporal;
public class ZoneOffsetExample1 {
public static void main(String[] args) {
ZoneOffset zone = ZoneOffset.UTC;
Temporal temp = zone.adjustInto(ZonedDateTime.now());
System.out.println(temp);
}
}
Output: 2017-01-29T12:43:00.702+05:30... |
Can you provide an example of Java ZoneOffset: ofHours()?
| import java.time.ZoneOffset;
public class ZoneOffsetExample2 {
public static void main(String[] args) {
ZoneOffset zone = ZoneOffset.ofHours(5);
System.out.println(zone);
}
}
Output: +05:00 |
Can you provide an example of Java ZoneOffset: ofHoursMinutes()?
| import java.time.ZoneOffset;
public class ZoneOffsetExample3 {
public static void main(String[] args) {
ZoneOffset zone = ZoneOffset.ofHoursMinutes(5,30);
System.out.println(zone);
}
}
Output: +05:30 |
Can you provide an example of Java ZoneOffset: isSupported()?
| import java.time.ZoneOffset;
import java.time.temporal.ChronoField;
public class ZoneOffsetExample4 {
public static void main(String[] args) {
ZoneOffset zone = ZoneOffset.UTC;
boolean b1 = zone.isSupported(ChronoField.OFFSET_SECONDS);
System.out.println(b1);
boolean b2 = zone.isS... |
What is Java Year class?
| Java Year class is an immutable date-time object that represents a year. It inherits the Object class and implements the Comparable interface. |
What is the class declaration for Java Year class?
| public final class Year extends Object implements Temporal, TemporalAdjuster, Comparable<Year>, Serializable |
What are the Methods of Java Year?
| Method: LocalDate atDay(int dayOfYear)
Description: It is used to combine this year with a day-of-year to create a LocalDate.
Method: String format(DateTimeFormatter formatter)
Description: It is used to format this year using the specified formatter.
Method: int get(TemporalField field)
Description: It is use... |
Can you provide an example of Java Year: now()?
| import java.time.Year;
public class YearExample1 {
public static void main(String[] args) {
Year y = Year.now();
System.out.println(y);
}
}
Output: 2017 |
Can you provide an example of Java Year: atDay()?
| import java.time.LocalDate;
import java.time.Year;
public class YearExample2{
public static void main(String[] args) {
Year y = Year.of(2017);
LocalDate l = y.atDay(123);
System.out.println(l);
}
}
Output: 2017-05-03 |
Can you provide an example of Java Year: length()?
| import java.time.Year;
public class YearExample3 {
public static void main(String[] args) {
Year year = Year.of(2017);
System.out.println(year.length());
}
}
Output: 365 |
Can you provide an example of Java Year: isLeap()?
| import java.time.Year;
public class YearExample4 {
public static void main(String[] args) {
Year year = Year.of(2016);
System.out.println(year.isLeap());
}
}
Output: true |
What is Java YearMonth class?
| Java YearMonth class is an immutable date-time object that represents the combination of a year and month. It inherits the Object class and implements the Comparable interface. |
What is the class declaration for Java YearMonth class?
| public final class YearMonth extends Object
implements Temporal, TemporalAdjuster, Comparable<YearMonth>, Serializable |
What are the Methods of Java YearMonth?
| Method: Temporal adjustInto(Temporal temporal)
Description: It is used to adjust the specified temporal object to have this year-month.
Method: String format(DateTimeFormatter formatter)
Description: It is used to format this year-month using the specified formatter.
Method: int get(TemporalField field)
Descri... |
Can you provide an example of Java YearMonth: now()?
| import java.time.YearMonth;
public class YearMonthExample1 {
public static void main(String[] args) {
YearMonth ym = YearMonth.now();
System.out.println(ym);
}
}
Output: 2017-01 |
Can you provide an example of Java YearMonth: format()?
| import java.time.YearMonth;
import java.time.format.DateTimeFormatter;
public class YearMonthExample2 {
public static void main(String[] args) {
YearMonth ym = YearMonth.now();
String s = ym.format(DateTimeFormatter.ofPattern("MM yyyy"));
System.out.println(s);
}
}
Output: 01 ... |
Can you provide an example of Java YearMonth: get()?
| import java.time.YearMonth;
import java.time.temporal.ChronoField;
public class YearMonthExample3 {
public static void main(String[] args) {
YearMonth y = YearMonth.now();
long l1 = y.get(ChronoField.YEAR);
System.out.println(l1);
long l2 = y.get(ChronoField.MONTH_OF_YEAR);
System.... |
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