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HashSet clone() Method in Java
  • Difficulty Level : Easy
  • Last Updated : 26 Nov, 2018

The Java.util.HashSet.clone() method is used to return a shallow copy of the mentioned hash set. It just creates a copy of the set.

Syntax:

Hash_Set.clone()

Parameters: The method does not take any parameters.

Return Value: The method just returns a copy of the HashSet.

Below program illustrate the Java.util.HashSet.clone() method:




// Java code to illustrate clone()
import java.io.*;
import java.util.HashSet;
  
public class Hash_Set_Demo {
    public static void main(String args[])
    {
        // Creating an empty HashSet
        HashSet<String> set = new HashSet<String>();
  
        // Use add() method to add elements into the Set
        set.add("Welcome");
        set.add("To");
        set.add("Geeks");
        set.add("4");
        set.add("Geeks");
  
        // Displaying the HashSet
        System.out.println("HashSet: " + set);
  
        // Creating a new cloned set
        HashSet cloned_set = new HashSet();
  
        // Cloning the set using clone() method
        cloned_set = (HashSet)set.clone();
  
        // Displaying the new Set after Cloning;
        System.out.println("The new set: " + cloned_set);
    }
}
Output:
HashSet: [4, Geeks, Welcome, To]
The new set: [Geeks, Welcome, To, 4]

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