Found 9326 Articles for Object Oriented Programming

The addAll() method of the AbstractList class is used to insert all of the elements in the specified collection into this list at the specified position.The syntax is as followsboolean addAll(int index, Collection

The LocalTime can be formatted with the specified formatter using the format() method in the LocalTime class in Java. This method requires a single parameter i.e. the LocalTime object to be formatted and it returns the formatted LocalTime with the specified formatter.A program that demonstrates this is given as follows:Example Live Demoimport java.util.*; import java.time.*; import java.time.format.DateTimeFormatter; public class Main {    public static void main(String[] args) {       LocalTime lt = LocalTime.parse("14:30:47");       System.out.println("The LocalTime is: " + lt);       DateTimeFormatter dtf = DateTimeFormatter.ISO_TIME;       System.out.println("The formatted LocalTime is: " + dtf.format(lt)); ... Read More

The build() method builds the stream. It transitions the builder to the built state. It returns the built stream. First, add elements to the streamIntStream.Builder builder = IntStream.builder(); builder.add(10); builder.add(25); builder.add(33);Now the stream is in the built phasebuilder.build().forEach(System.out::println);The syntax is as followsIntStream build()The following is an example to implement IntStream.Builder build() method in JavaExample Live Demoimport java.util.stream.IntStream; public class Demo {    public static void main(String[] args) {       IntStream.Builder builder = IntStream.builder();       System.out.println("Elements in the stream...");       builder.add(10);       builder.add(25);       builder.add(33);       builder.add(42);       ... Read More

You can create a LabelValue tuple using the with() method or using just the constructor. Let us first see what we need to work with JavaTuples. To work with LabelValue class in JavaTuples, you need to import the following packageimport org.javatuples.LabelValue;Note: Download JavaTuples Jar library to run JavaTuples program. If you are using Eclipse IDE, then Right Click Project -> Properties -> Java Build Path -> Add External Jars and upload the downloaded JavaTuples jar file. Refer the below guide for all the steps to run JavaTuplesSteps: How to run JavaTuples program in EclipseThe following is an example to create ... Read More

The findAny() method of the DoubleStream class returns an OptionalDouble describing some element of the stream, or an empty OptionalDouble if the stream is empty.The syntax is as followsOptionalDouble findAny()Here, OptionalDouble is a container object which may or may not contain a double value To use the DoubleStream class in Java, import the following packageimport java.util.stream.DoubleStream;Create a DoubleStream and add some elementsDoubleStream doubleStream = DoubleStream.of(23.8, 30.2, 50.5, 78.9, 80.4, 95.8);Now, display an elementOptionalDouble res = doubleStream.findAny(); The following is an example to implement DoubleStream findAny() method in JavaExample Live Demoimport java.util.*; import java.util.stream.DoubleStream; public class Demo {    public static void ... Read More

The findFirst() method in Java returns an OptionalInt describing the first element of this stream. If the stream is empty, an empty OptionalInt is returned.The syntax is as followsOptionalInt findFirst()Here, OptionalInt is a container object which may or may not contain an int value.To work with the IntStream class in Java, import the following packageimport java.util.stream.IntStream;For OptionalInt class, import the following packageimport java.util.OptionalInt;First, create an IntStream and add elementsIntStream intStream = IntStream.of(30, 45, 70, 80, 90, 120);Now, get the first element of this streamOptionalInt res = intStream.findFirst();The following is an example to implement IntStream findFirst() method in JavaExample Live Demoimport java.util.OptionalInt; ... Read More

The equality of two LocalTime objects can be determined using the equals() method in the LocalTime class in Java. This method requires a single parameter i.e. the LocalTime object to be compared. Also it returns true if both the LocalTime objects are equal and false otherwise.A program that demonstrates this is given as followsExample Live Demoimport java.time.*; public class Main {    public static void main(String[] args) {       LocalTime lt1 = LocalTime.parse("23:15:30");       LocalTime lt2 = LocalTime.parse("23:15:30");       System.out.println("The LocalTime lt1 is: " + lt1);       System.out.println("The LocalTime lt2 is: " + ... Read More

The sorted() method in Java IntStream class is used to return a stream consisting of the elements of this stream in sorted order.The syntax is as followsIntStream sorted()The sorted() method returns the new stream. To work with the IntStream class, you need to import the following packageimport java.util.stream.IntStream;Create an IntStream and add some elementsIntStream intStream = IntStream.of(30, 50, 70, 120, 150, 200, 250, 300);Now, to sort the above stream elements, use the sorted() methodintStream.sorted() The following is an example to implement IntStream sorted() method in JavaExample Live Demoimport java.util.stream.IntStream; public class Demo {    public static void main(String[] args) { ... Read More

A LocalTime object can be obtained using the seconds of the day with the ofSecondOfDay() method in the LocalTime class in Java. This method requires a single parameter i.e. the seconds of the day and it returns the LocalTime object for the seconds of the day.A program that demonstrates this is given as followsExample Live Demoimport java.time.*; public class Demo {    public static void main(String[] args) {       long seconds = 18930;       System.out.println("The seconds of the day: " + seconds);       System.out.println("The LocalTime is: " + LocalTime.ofSecondOfDay(seconds));    } }outputThe seconds of the ... Read More

The rangeClosed() class in the IntStream class returns a sequential ordered IntStream from startInclusive to endInclusive by an incremental step of 1. This includes both the startInclusive and endInclusive values.The syntax is as followsstatic IntStream rangeClosed(int startInclusive, int endInclusive)Here, startInclusive is the value including the first value and endInclusive is the value indicating the last value. To work with the IntStream class in Java, import the following packageimport java.util.stream.IntStream;The following is an example to implement IntStream rangeClosed() method in JavaExample Live Demoimport java.util.stream.IntStream; public class Demo { public static void main(String[] args) { ... Read More