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Java Articles
Page 53 of 450
IntStream toArray() method in Java
The toArray() method returns an array containing the elements of this stream.Set the elements in the stream with the IntStream class of() method.IntStream stream = IntStream.of(20, 40, 60, 70, 100, 120, 140);Now, display an array with the elements of this stream using the toArray() method.int[] myArr = stream.toArray();The following is the syntax.int[] toArray()The following is an example to implement IntStream toArray() method in Java.Exampleimport java.util.*; import java.util.stream.IntStream; public class Demo { public static void main(String[] args) { IntStream stream = IntStream.of(20, 40, 60, 70, 100, 120, 140); int[] myArr = stream.toArray(); System.out.println(Arrays.toString(myArr)); } }Output[20, 40, 60, 70, 100, 120, 140]
Read MoreCollectors.joining() method in Java 8
The joining() method of the Collectors class in Java 8 returns a Collector that concatenates the input elements into a String, in encounter order.The syntax is as follows −public static Collector joining()Here, CharSequence is a readable sequence of char values, whereas String class represents character strings.To work with Collectors class in Java, import the following package −import java.util.stream.Collectors;The following is an example to implement Collectors.joining() method in Java 8 −Exampleimport java.util.stream.Collectors; import java.util.stream.Stream; import java.util.Arrays; import java.util.List; public class Demo { public static void main(String[] args) { List list = ...
Read MoreIntStream boxed() method in Java
The boxed() method of the IntStream class returns a Stream consisting of the elements of this stream, each boxed to an Integer.The syntax is as follows.Stream boxed()At first, create an IntStreamIntStream intStream = IntStream.range(20, 30);Now, use the boxed() method to return a Stream consisting of the elements of this stream, each boxed to an Integer.Stream s = intStream.boxed();The following is an example to implement IntStream boxed() method in Java.Exampleimport java.util.*; import java.util.stream.Stream; import java.util.stream.IntStream; public class Demo { public static void main(String[] args) { IntStream intStream = IntStream.range(20, 30); Stream s = intStream.boxed(); ...
Read MoreThe toArray() method of CopyOnWriteArrayListin Java
The toArray() method is used to return an array containing all the elements in this list in proper sequence.The syntax is as follows −Object[] toArray()To work with CopyOnWriteArrayList class, you need to import the following package −import java.util.concurrent.CopyOnWriteArrayList;The following is an example to implement CopyOnWriteArrayList class toArray() method in Java−Exampleimport java.util.Arrays; import java.util.concurrent.CopyOnWriteArrayList; public class Demo { public static void main(String[] args) { CopyOnWriteArrayList arrList = new CopyOnWriteArrayList(); arrList.add(220); arrList.add(250); arrList.add(400); ...
Read MoreLongStream summaryStatistics() method in Java
The summaryStatistics() method in the LongStream class in Java returns a LongSummaryStatistics describing various summary data about the elements of this stream.The syntax is as follows −LongSummaryStatistics summaryStatistics()Here, LongSummaryStatistics is a state object for collecting statistics such as count, min, max, etc.To use the LongStream class in Java, import the following packageimport java.util.stream.LongStream;Create LongStream and add some elements −LongStream longStream = LongStream.of(30000L, 15000L, 20000l, 25000l, 30000l);Now, get the statistics −LongSummaryStatistics info = longStream.summaryStatistics(); The following is an example to implement LongStream summaryStatistics() method in Java −Exampleimport java.util.stream.LongStream; import java.util.LongSummaryStatistics; public class Demo { public static void ...
Read MoreLongStream asDoubleStream() method in Java
The asDoubleStream() method of the LongStream class in Java returns a DoubleStream consisting of the elements of this stream, converted to double.The syntax is as follows.DoubleStream asDoubleStream()Here, DoubleStream is a sequence of primitive double-valued elements. To use the LongStream class in Java, import the following package.import java.util.stream.LongStream;Create LongStream and add elements.LongStream longStream = LongStream.of(2000L, 35000L, 45000L);Now, convert it to double and return using asDoubleStream() method.DoubleStream s = longStream.asDoubleStream();The following is an example to implement LongStream asDoubleStream() method.Exampleimport java.util.stream.LongStream; import java.util.stream.DoubleStream; public class Demo { public static void main(String[] args) { LongStream longStream = LongStream.of(2000L, 35000L, 45000L); ...
Read MoreLongStream limit() method in Java
The limit() method of the LongStream class in Java returns a stream consisting of the elements of this stream, truncated to be no longer than max in length. Here, max is the parameter of the method.The syntax is as follows.LongStream limit(long max)Here, max is the number of elements the stream should be limited to.To use the LongStream class in Java, import the following package.import java.util.stream.LongStream;Create a LongStream and add elements.LongStream longStream = LongStream.of(2000L, 35000L, 45000L, 50500L, 65000L, 72000L);Now, let’s say you only want to return 4 elements. For that, use the limit as 4.longStream.limit(4).The following is an example to implement ...
Read MoreLongStream sequential() method in Java
The sequential() method of the LongStream class in Java returns an equivalent stream that is sequential.The syntax is as follows −LongStream sequential()To use the LongStream class in Java, import the following package −import java.util.stream.LongStream;Create a LongStream and add some elements −LongStream longStream = LongStream.of(50L, 70L, 100L, 150L, 200L, 300L);Now, return an equivalent stream that is sequential −LongStream res = longStream.sequential(); The following is an example to implement LongStream sequential() method in Java −Exampleimport java.util.stream.LongStream; public class Demo { public static void main(String[] args) { LongStream longStream = LongStream.of(50L, 70L, 100L, 150L, ...
Read MoreLongStream count() method in Java
The count() method of the LongStream class in Java is used to return the count of elements in this stream.The syntax is as follows.long count()To use the LongStream class in Java, import the following package.import java.util.stream.LongStream;Create a LongStream and add some elements.LongStream longStream = LongStream.of(50L, 30L, 80L, 40L, 15L, 60L);Now, get the count of elements.longStream.count()The following is an example to implement LongStream count() method in Java.Exampleimport java.util.stream.LongStream; public class Demo { public static void main(String[] args) { LongStream longStream = LongStream.of(50L, 30L, 80L, 40L, 15L, 60L); System.out.println("The number of elements in the stream ...
Read MoreThe isEmpty() method of AbstractSequentialList in Java
The isEmpty() method of the AbstractSequentialList class is used to check whether the list is empty or not. If it is empty, then TRUE is returned, else FALSE.The syntax is as follows.public boolean isEmpty()To work with the AbstractSequentialList class in Java, you need to import the following package.import java.util.AbstractSequentialList;The following is an example to implement AbstractSequentialList isEmpty() method in Java.Exampleimport java.util.LinkedList; import java.util.AbstractSequentialList; public class Demo { public static void main(String[] args) { AbstractSequentialList absSequential = new LinkedList(); absSequential.add(110); absSequential.add(320); absSequential.add(400); absSequential.add(550); absSequential.add(600); absSequential.add(700); absSequential.add(900); System.out.println("Elements in ...
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