Check if Two Arrays are Equal in Java

Java – Slice an Array

To check if two Arrays are equal in Java, call Arrays.equals() method and pass the two arrays as arguments. Arrays.equals() returns boolean value of true if given two arrays are equal, or false if not.

Examples

In the following example, we take two integer arrays: arr1 and arr2, and check if these two arrays are equal using Arrays.equals() method.

Main.java

import java.util.Arrays;

public class Main {
    public static void main(String[] args) {
        int arr1[] = {2, 4, 6, 8};
        int arr2[] = {2, 4, 6, 8};
        
        if (Arrays.equals(arr1, arr2)) {
            System.out.println("Arrays are equal.");
        } else {
            System.out.println("Arrays are not equal.");
        }
    }
}

Output

Arrays are equal.

Now, let us take different value in arrays: arr1 and arr2, and check if these two arrays are equal using Arrays.equals() method. Arrays.equals() should return false.

Main.java

import java.util.Arrays;

public class Main {
    public static void main(String[] args) {
        int arr1[] = {2, 4, 6, 8};
        int arr2[] = {3, 6, 9};
        
        if (Arrays.equals(arr1, arr2)) {
            System.out.println("Arrays are equal.");
        } else {
            System.out.println("Arrays are not equal.");
        }
    }
}

Output

Arrays are not equal.

Conclusion

In this Java Tutorial, we learned how to check if two Arrays are equal in Java using Arrays.equals() method with examples.