Example of Hashset size() method in java.


 

Example of Hashset size() method in java.

Example of Hashset size() method in java.

Example of Hashset size() method in java.

Example of Hashset size() method in java.

The size() is a method of HashSet class. It is used to calculte the size of HashSet. The size of method is equal to total number of elements in HashSet

Code: 

SizeOfHashSet.java

package net.roseindia;

import java.util.HashSet;

public class SizeOfHashSet {

public static void main(String[] arg) {

HashSet obHashSet = new HashSet();

obHashSet.add(new Integer(1));

obHashSet.add(new Integer(2));

obHashSet.add(new Integer(3));

obHashSet.add(new Integer(4));

System.out.println("All Elements in HashSet : " + obHashSet);

System.out.println("Size of HashSet : " + obHashSet.size());

} }

Output :

All Elements in HashSet : [1, 2, 3, 4]

Size of HashSet : 4

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