java.util.HashSet.size() Method

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