In this post under Java Collections, I will show with example the purpose of Collections class static “disjoint” method. This method compares two collections provided as input and returns true if both the collections have no elements in common. For our example, we will use the below main class. Main class 1 package core.collection; 2…… Continue reading Collections disjoint method
Category: Java
Converting a map to immutable map
In this post under Java Collections, I will show with example how to obtain an immutable map. Below is the complete main code for your reference Main class 1 package core.collection; 2 3 import java.util.Collections; 4 import java.util.HashMap; 5 import java.util.Map; 6 7 public class ImmutableMapDemo { 8 public static void main(String[] args) { 9…… Continue reading Converting a map to immutable map
Converting a collection to immutable collection
In this post under Java Collections, I will show with example how to create immutable collections. Below is the complete code for your reference. Main class 1 package core.collection; 2 3 import java.util.ArrayList; 4 import java.util.Collection; 5 import java.util.Collections; 6 import java.util.List; 7 8 public class ImmutableCollectionDemo { 9 public static void main(String args [])…… Continue reading Converting a collection to immutable collection
Creating a synchronized map
In this post under Java Collections, I will explain with example how to create synchronized map. Below is the complete code for your reference Main class 1 package core.collection; 2 3 import java.util.Collections; 4 import java.util.HashMap; 5 import java.util.Map; 6 7 public class SyncMapDemo { 8 public static void main(String args []) { 9 Map<Integer,…… Continue reading Creating a synchronized map
Creating a synchronized collection
In this post under Java Collections, I will show with example how to create a synchronized collection. Below is the complete main code for your reference. 1 package core.collection; 2 3 import java.util.ArrayList; 4 import java.util.Collection; 5 import java.util.Collections; 6 import java.util.List; 7 8 public class SyncCollectionDemo { 9 public static void main(String[] args) {…… Continue reading Creating a synchronized collection
Collection to Enumeration conversion
In this post under Java Collections, I will show with example how to convert a collection to Enumeration. Below is the complete code for your reference. Main class 1 package core.collection; 2 3 import java.util.Collections; 4 import java.util.Enumeration; 5 import java.util.List; 6 import java.util.ArrayList; 7 8 public class ColToEnumDemo { 9 public static void main(String…… Continue reading Collection to Enumeration conversion
Copying elements from one list to another list
In this post under Java Collections, I will show with example how to copy elements from one list to another. Below is the complete code for your reference. Main class 1 package core.collection; 2 3 import java.util.ArrayList; 4 import java.util.Collections; 5 import java.util.List; 6 7 public class ListCopyDemo { 8 public static void main(String []…… Continue reading Copying elements from one list to another list
Adding and accessing static members to Java Record
In this post under Java, I will show with example how to add and access static members in Java Record. Below is the structure of “Student” Record with static members Student 1 package core.record;2 3 public record Student(int id, String name, int age) {4 public static int noOfStudents;5 public static void display() {6 System.out.println(“Number of…… Continue reading Adding and accessing static members to Java Record
Simple Java Record Example
In this post under Java, I will introduce you with example to Java’s Record classes. Introduced in Java 16, is a immutable data class, whose main purpose is hold read only data. Below shows how to create Record class. Person Record package core.record;public record Person(int id, String name, int age) {} We save the file…… Continue reading Simple Java Record Example
Merging two character arrays
In this post under Java. I will show with example how to merge two character arrays into one. Below is the complete code for your reference. Main Class 1 package core.string; 2 3 public class Example1 { 4 public static void main(String[] args) { 5 char[] inputArray1 = {‘a’, ‘b’, ‘c’}; 6 char[] inputArray2 =…… Continue reading Merging two character arrays
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