How to Find Common Element Between Two Arrays In Java?

How to Find Common Element Between Two Arrays In Java?

package com.softwaretestingblog.programs;
import java.util.HashSet;
public class FindCommonElementFrom2Array {
   public static void main(String[] args) {
      String[] s1 = {"ONE", "TWO", "THREE", "FOUR", "FIVE", "FOUR"};
      String[] s2 = {"THREE", "FOUR", "FIVE", "SIX", "SEVEN", "FOUR"};

      HashSet<String> set = new HashSet<String>(); 
      for (int i = 0; i < s1.length; i++)
      {
         for (int j = 0; j < s2.length; j++)
         {
            if(s1[i].equals(s2[j]))
            {
               set.add(s1[i]);
            }
         }
      } 
      System.out.println(set);     //OUTPUT : [THREE, FOUR, FIVE]
   }
}

Check Also: Find Fibonacci Numbers Using Java

Output:

[FIVE, FOUR, THREE]