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Object Oriented Programming Articles
Page 236 of 589
MonthDay isSupported() Method in Java
It can be checked if a ChronoField is supported by the MonthDay class or not by using the isSupported() method in the MonthDay class in Java. This method requires a single parameter i.e. the ChronoField to check. It returns true if the ChronoField is supported by the MonthDay class and false otherwise.A program that demonstrates this is given as followsExampleimport java.time.*; import java.time.temporal.*; public class Demo { public static void main(String[] args) { MonthDay md = MonthDay.now(); System.out.println("The MonthDay is: " + md); boolean flag = md.isSupported(ChronoField.MONTH_OF_YEAR); ...
Read MoreIntStream map() method in Java
The IntStream map() method returns the new stream consisting of the results of applying the given function to the elements of this stream.The syntax is as followsIntStream map(IntUnaryOperator mapper)Here, mapper parameter is a non-interfering, stateless function to apply to each elementCreate an IntStream and add some elementsIntStream intStream1 = IntStream.of(20, 35, 40, 55, 60);Now, map it with the new IntStream and display the updated stream elements applying the condition in the map() functionIntStream intStream2 = intStream1.map(a -> (a + a));The following is an example to implement IntStream map() method in JavaExampleimport java.util.*; import java.util.stream.IntStream; public class Demo { public ...
Read MoreIntStream flatMap() method in Java
The flatMap() method of the IntStream class returns a stream consisting of the results of replacing each element of this stream with the contents of a mapped stream produced by applying the provided mapping function to each element.The syntax is as followsIntStream flatMap(IntFunction
Read MoreThe contains() method of CopyOnWriteArrayList in Java
The contains() method of the CopyOnWriteArrayList class is used to get the specified element. It returns TRUE if the element is in the List, else FALSE is returned.The syntax is as followsboolean contains(Object ob)Here, ob is the element to be checked for existence. 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 contains() method in JavaExampleimport java.util.concurrent.CopyOnWriteArrayList; public class Demo { public static void main(String[] args) { CopyOnWriteArrayList arrList = new CopyOnWriteArrayList(); arrList.add(100); arrList.add(250); arrList.add(400); ...
Read MoreThe add() method of CopyOnWriteArrayList in Java
Two types of add() methods are available in the CopyOnWriteArrayList class: add(E e) methodTo add elements in CopyOnWriteArrayList class in Java, use the add() method. Here, the element is appended to the end of the list.The syntax is as followsboolean add(E e)Here, the parameter e is the element to be appended to this list.To work with CopyOnWriteArrayList class, you need to import the following packageimport java.util.concurrent.CopyOnWriteArrayList;The following is an example to add elements in the CopyOnWriteArrayList class in JavaExampleimport java.util.concurrent.CopyOnWriteArrayList; public class Demo { public static void main(String[] args) { CopyOnWriteArrayList arrList = new CopyOnWriteArrayList(); ...
Read MoreInsert the specified element at the specified position in Java CopyOnWriteArrayList
Using the add() method, insert the specified element at the specified position in the CopyOnWriteArrayList.The syntax is as followsvoid add(int index, E ele)Here, the parameter index is where you want to insert the element and ele is the element to be inserted to this list. To work with CopyOnWriteArrayList class, you need to import the following packageimport java.util.concurrent.CopyOnWriteArrayList;The following is an example to add elements in the CopyOnWriteArrayList class in JavaExampleimport java.util.concurrent.CopyOnWriteArrayList; public class Demo { public static void main(String[] args) { CopyOnWriteArrayList arrList = new CopyOnWriteArrayList(); arrList.add(100); arrList.add(250); ...
Read MoreDoubleStream forEachOrdered() method in Java
The forEachOrdered() method of the DoubleStream class in Java performs an action for each element of this stream. This assures that each element is processed in encounter order for streams that have a defined encounter order.The syntax is as followsvoid forEachOrdered(DoubleConsumer action)Here, DoubleConsumer represents an operation that accepts a single double-valued argument and returns no result. The parameter action is a non-interfering action to perform on the elements.To use the DoubleStream class in Java, import the following packageimport java.util.stream.DoubleStream;The following is an example to implement DoubleStream forEachOrdered() method in Java:Exampleimport java.util.stream.DoubleStream; public class Demo { public static void main(String[] ...
Read MoreIntStream of() method in Java
The IntStream class in Java the following two forms of of() methodIntStream of(int t) methodThe following of() method returns a sequential IntStream containing a single element. Here is the syntaxstatic IntStream of(int t)Here, parameter t is the single element.IntStream of(int… values) methodThe following of() method returns a sequentially ordered stream whose elements are the specified valuesstatic IntStream of(int… values)Here, the parameter values are the elements of the new stream.The following is an example to implement IntStream of() method in JavaExampleimport java.util.*; import java.util.stream.IntStream; public class Demo { public static void main(String[] args) { IntStream intStream = ...
Read MoreIntStream forEach() method in Java
The forEach() method is used in Java to perform an action for each element of this stream. Display the stream using the forEach() method in Java IntStreamThe syntax is as followsvoid forEach(IntConsumer action)Here, action is a non-interfering action to perform on the elements.Create IntStream and add elementsIntStream intStream = IntStream.of(15, 30, 40, 60, 75, 90);Now, display the streamintStream.forEach(System.out::println);The following is an example to implement IntStream forEach() method in JavaExampleimport java.util.*; import java.util.stream.IntStream; public class Demo { public static void main(String[] args) { IntStream intStream = IntStream.of(15, 30, 40, 60, 75, 90); intStream.forEach(System.out::println); } }Output15 30 40 60 75 90
Read MoreIntStream generate() method in Java
The generate() method in the IntStream class returns an infinite sequential unordered stream where each element is generated by the provided IntSupplier.The syntax is as followsstatic IntStream generate(IntSupplier i)Here, i is the IntSupplier for generated elements. The IntSupplier represents a supplier of int-valued results.The following is an example to implement IntStream generate() method in Java. We have used the limit() method here as well to limit the number of elements we want from the streamExampleimport java.util.*; import java.util.stream.IntStream; public class Demo { public static void main(String[] args) { IntStream intStream = IntStream.generate(() -> ...
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