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Java program to find the common elements in two integer arrays

In this java program, we are going to find and print the common elements from two integer arrays; here we have two integer arrays and printing their common elements, which exist in both of the arrays. By IncludeHelp Last updated : December 23, 2023

Problem statement

Given two integer arrays and we have to find common integers (elements) using java program.

Example

Input:
Array 1 elements: 1993, 1995, 2000, 2006, 2017, 2020
Array 2 elements: 1990, 1993, 1995, 2010, 2016, 2017

Output:
Common elements: 1993, 1995, 2017

Java program to find the common elements in two integer arrays

// This program will find common elements from the integer array.

import java.util.Arrays;

public class ExArrayCommonInteger
{
	public static void main(String[] args) 
	{
		// take default integer value.
		int[] array1 = {1993,1995,2000,2006,2017,2020};
		int[] array2 = {1990,1993,1995,2010,2016,2017};

		// print the entered value.
		System.out.println("Array1 : "+Arrays.toString(array1));
		System.out.println("Array2 : "+Arrays.toString(array2));


		for (int i = 0; i < array1.length; i++)
		{
			for (int j = 0; j < array2.length; j++)
			{
				if(array1[i] == (array2[j]))
				{
					// return common integer value.
					System.out.println("Common element is : "+(array1[i]));
				}
			}
		}
	}
}

Output

Array1 : [1993, 1995, 2000, 2006, 2017, 2020]
Array2 : [1990, 1993, 1995, 2010, 2016, 2017]
Common element is : 1993
Common element is : 1995
Common element is : 2017

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