Friday, 30 December 2016

How to create HashSet in Java?

package com.kt4study.corejava.collection;

import java.util.HashSet;

/**
 @author kt4study.blogspot.co.uk
 
 */

public class HashSetExample {

  public HashSet<String> getHashSet() {
    // Create An Instance Of HashSet
    HashSet<String> hashSet = new HashSet<String>();
    // Add String Object in HashSet.
    hashSet.add("Hello World");
    hashSet.add("kt4study.blogspot.co.uk");
    hashSet.add("Hello World");
    return hashSet;
  }

  public static void main(String[] args) {
    HashSetExample hashSetExample = new HashSetExample();
    //Print all the elements From HashSet
    for (String element : hashSetExample.getHashSet()) {
      System.out.println("Element from HashSet:: " + element);
    }

  }
}

Output - Only unique elements available in HashSet

Element from HashSet:: Hello World
Element from HashSet:: kt4study.blogspot.co.uk

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