java.util.HashSet.size() Method


Advertisements


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

java_util_hashset.htm

Advertisements