Java HashSet clone() Method with Examples

by Online Tutorials Library July 22, 2022

Java HashSet clone() Method

The clone() method of Java HashSet class is used to return a shallow copy of the specified HashSet.

Syntax

Following is the declaration of clone() method:

Parameter

This method does not accept any parameter.

Returns

The clone() method returns a shallow copy of this HashSet.

Exceptions

Compatibility Version

Java 1.2 and above

Example 1

  import java.util.*;  public class HashSetCloneExample1 {  public static void main(String[] args) {  //Creating HashSet               HashSet set = new HashSet();              //Add elements into the Set              set.add(“TutorAspire”);              set.add(“Google”);              set.add(“Hindi100”);              set.add(“101”);              set.add(“Facebook”);               //Print the elements              System.out.println(“HashSet elements: ” + set);              //Creating a new cloned set              HashSet clonedSet = new HashSet();              //Clone the HashSet              clonedSet = (HashSet)set.clone();              //Displaying the new Set after Cloning;              System.out.println(“The new clone set elements: ” + clonedSet);        }  }  

Test it Now

Output:

HashSet elements: [Google, 101, Hindi100, TutorAspire , Facebook]  The new clone set elements: [Google, 101, TutorAspire , Facebook, Hindi100]

Example 2

  import java.util.*;  public class HashSetCloneExample2 {  public static void main(String[] args) {  //Create hash set        HashSet hset = new HashSet();              //clone elements to hash set        hset.add(121);         hset.add(111);        hset.add(151);          //Checking elements in hash set        System.out.println(“Hash set Elements: “+ hset);              //Creating a new cloned set              HashSet clonedSet = new HashSet();              //Clone the HashSet              clonedSet = (HashSet)hset.clone();              //Displaying the new Set after Cloning;              System.out.println(“The new clone set elements: ” + clonedSet);        }  }  

Test it Now

Output:

Hash set Elements: [151, 121, 111]  The new clone set elements: [121, 151, 111]

Example 3

  import java.util.*;  public class HashSetCloneExample3 {  public static void main(String[] args) {   //Create an empty HashSet              HashSet hset1 = new HashSet<>();                     //Add elements to the HashSet              hset1.add(“JTP”);              hset1.add(“SSSIT”);              hset1.add(“DFC”);              //Print the elements of the HashSet              System.out.println(“Elements of the hset1:”);              for(String temp:hset1)              {                  System.out.println(temp);              }                     //Create another HashSet              HashSet hset2 = new HashSet<>();              //Shallow copying of hset1 to hset2              hset2 =(HashSet)hset1.clone();                     //Print the elements of the HashSet              System.out.println(“Elements of the hset2 after clone() operation:”);              for(String temp:hset2)              {                  System.out.println(temp);              }  }  }  

Test it Now

Output:

Elements of the hset1:  DFC  SSSIT  JTP  Elements of the hset2 after clone() operation:  DFC  SSSIT  JTP

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Java HashSet clone() Method with Examples

Java HashSet clone() Method

Syntax

Parameter

Returns

Exceptions

Compatibility Version

Example 1

Example 2

Example 3

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