java.util.HashSet.size() Method

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Description

The size() method is used to get the number of elements in this set.

Declaration

Following is the declaration for java.util.HashSet.size() method.

public int size()

Parameters

NA

Return Value

The method call returns the number of elements in this set.

Exception

NA

Example

The following example shows the usage of java.util.HashSet.size()

package com.tutorialspoint;

import java.util.*;

public class HashSetDemo {
   public static void main(String args[]) {
      
      // create hash set
      HashSet <String> newset = new HashSet <String>();

      // populate hash set
      newset.add("Learning"); 
      newset.add("Easy");
      newset.add("Simply");  

      System.out.println("Size of the set: "+newset.size());     
   }    
}

Let us compile and run the above program, this will produce the following result.

Size of the set: 3