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Java Articles
Page 55 of 450
IntStream range() method in Java
The range() method in the IntStream class in Java is used to return a sequential ordered IntStream from startInclusive to endExclusive by an incremental step of 1. This includes the startInclusive as well.The syntax is as follows −static IntStream range(int startInclusive, int endExclusive)Here, the parameter startInclusive includes the starting value, whereas endExclusive excludes the last valueTo work with the IntStream class in Java, import the following package −import java.util.stream.IntStream;Create an IntStream and add stream elements in a range using range() method. This returns a sequential ordered IntStream by an incremental step of 1 within the range −intStream.forEach(System.out::println);The following is an ...
Read MoreDoubleStream mapToObj() method in Java
The mapToObj() method of the DoubleStream class returns an object-valued Stream consisting of the results of applying the given function to the elements of this stream.The syntax is as follows − Stream mapToObj(DoubleFunction
Read MoreThe equals() method of AbstractSequentialList in Java
The equals() method is inherited from the AbstractList class in Java. It is used to check the object for equality with this list. It returns TRUE if the object is equal to this list, else FALSE is returned.The syntax is as follows −public boolean equals(Object o)Here, o is the object to be compared for equality with this list.To work with the AbstractSequentialList class in Java, you need to import the following packageimport java.util.AbstractSequentialList;The following is an example to implement AbstractSequentialList equals() method in JavaExampleimport java.util.LinkedList; import java.util.AbstractSequentialList; public class Demo { public static void main(String[] args) { ...
Read MoreLongStream forEachOrdered() method in Java
The forEachOrdered() method in Java performs an action for each element of this stream, guaranteeing that each element is processed in encounter order for streams that have a defined encounter order.The syntax is as follows −void forEachOrdered(LongConsumer action)Here, parameter wrapper is a non-interfering action to perform on the elements. LongConsumer represents an operation that accepts a single long-valued argument and returns no result.To use the LongStream class in Java, import the following package −import java.util.stream.LongStream;The following is an example to implement LongStream forEachOrdered() method in Java −Exampleimport java.util.*; import java.util.stream.LongStream; public class Demo { public static void main(String[] ...
Read MoreThe isEmpty() method of Java AbstractCollection class
The isEmpty() method of the AbstractCollection class checks whether the collection is empty or not i.e. whether it has zero elements. It returns if the Collectionn has no elements.The syntax is as follows −public boolean isEmpty()To work with AbstractCollection class in Java, import the following package −import java.util.AbstractCollection;The following is an example to implement AbstractCollection isEmpty() method in Java −Exampleimport java.util.ArrayList; import java.util.AbstractCollection; public class Demo { public static void main(String[] args) { AbstractCollection absCollection = new ArrayList(); absCollection.add("Laptop"); absCollection.add("Tablet"); absCollection.add("Mobile"); absCollection.add("E-Book Reader"); ...
Read MoreThe iterator() method of Java AbstractCollection class
The iterator() method of the AbstractCollection class in Java is used to return an iterator over the elements contained in this collection.The syntax is as follows −public abstract Iterator iterator()To work with AbstractCollection class in Java, import the following package −import java.util.AbstractCollection;For Iterator, import the following package −import java.util.Iterator;The following is an example to implement the AbstractCollection iterator() method in Java −Exampleimport java.util.Iterator; import java.util.ArrayList; import java.util.AbstractCollection; public class Demo { public static void main(String[] args) { AbstractCollection absCollection = new ArrayList(); absCollection.add("Laptop"); absCollection.add("Tablet"); absCollection.add("Mobile"); ...
Read MoreIntStream findAny() method in Java
The findAny() method of the IntStream class in Java is used to return an OptionalInt describing some element of the stream, or an empty OptionalInt if the stream is empty.The syntax is as follows −OptionalInt findAny()Here, OptionalInt is a container object which may or may not contain an int value.Create an IntStream and add some elements −IntStream intStream = IntStream.of(20, 35, 50, 60, 80, 100);Now, return any of the element of the stream using findAny() in Java −OptionalInt res = intStream.findAny();The following is an example to implement IntStream findAny() method in Java −Exampleimport java.util.*; import java.util.stream.IntStream; public class Demo ...
Read MoreDoubleStream.Builder accept() method in Java
The accept() method of the DoubleStream class in Java adds an element to the stream being built.The syntax is as follows −void accept(double ele)Here, ele is the element to be inserted into the stream.To use the DoubleStream.Builder class in Java, import the following package −import java.util.stream.DoubleStream;The following is an example to implement DoubleStream.Builder() accept() method in Java −Exampleimport java.util.stream.DoubleStream; public class Demo { public static void main(String[] args) { DoubleStream.Builder builder = DoubleStream.builder(); builder.accept(12.9); builder.accept(25.6); builder.accept(35.8); builder.accept(43.9); builder.accept(56.3); ...
Read MoreThe iterator() method of CopyOnWriteArrayList in Java
The iterator() method is used to return an iterator over the elements in this list.The syntax is as followsIterator iterator()To work with CopyOnWriteArrayList class, you need to import the following packageimport java.util.concurrent.CopyOnWriteArrayList;The following is an example to implement CopyOnWriteArrayList class iterator() method in JavaExampleimport java.util.Arrays; import java.util.Iterator; import java.util.concurrent.CopyOnWriteArrayList; public class Demo { public static void main(String[] args) { CopyOnWriteArrayList arrList = new CopyOnWriteArrayList(); arrList.add(50); arrList.add(90); arrList.add(150); arrList.add(200); arrList.add(350); arrList.add(500); arrList.add(650); ...
Read MoreDoubleStream peek() method in Java
The syntax is as followsDoubleStream peek(DoubleConsumer action)Here, DoubleConsumer is an operation that accepts a single double-valued argument and returns no result.To use the DoubleStream class in Java, import the following packageimport java.util.stream.DoubleStream;The following is an example to implement DoubleStream peek() method in JavaExampleimport java.util.*; import java.util.stream.DoubleStream; public class Demo { public static void main(String[] args) { DoubleStream doubleStream = DoubleStream.of(28.7, 35.6, 48.3, 69.8, 75.8, 80.5, 90.8); System.out.println("Elements in the stream..."); long num = doubleStream.peek(System.out::println).count(); System.out.println("Number of elements in the stream = " + num); } }OutputElements ...
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