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Java Collections - Arrays.deepEquals() Examples

[Last Updated: Nov 8, 2025]

Java Collections Java Java API 

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Class:

java.util.Arrays

java.lang.Objectjava.lang.Objectjava.util.Arraysjava.util.ArraysLogicBig

Method:

public static boolean deepEquals(Object[] a1,
                                 Object[] a2)

This method returns true if the two specified arrays are deeply equal to one another.


Examples


package com.logicbig.example.arrays;

import java.util.Arrays;

public class DeepEqualsExample {


    public static void main(String... args) {
        Object[] arr1 = {3, 5, new int[]{6, 7, 9}};
        Object[] arr2 = {3, 5, new int[]{6, 7, 9}};

        System.out.println(arr1.equals(arr2));
        System.out.println(Arrays.equals(arr1, arr2));
        System.out.println(Arrays.deepEquals(arr1, arr2));
    }
}

Output

false
false
true




package com.logicbig.example.arrays;

import java.util.Arrays;

public class DeepEqualsExample2 {

public static void main(String... args) {
    Object[] arr1 = {3, 5};
    Object[] arr2 = {3, 5};

    System.out.println(arr1.equals(arr2));
    System.out.println(Arrays.equals(arr1, arr2));
    System.out.println(Arrays.deepEquals(arr1, arr2));
}
}

Output

false
true
true




package com.logicbig.example.arrays;

import java.util.Arrays;

public class DeepEqualsExample3 {

    public static void main(String... args) {
        Object[] arr1 = {3, 5};
        Object[] arr2 = arr1;

        System.out.println(arr1.equals(arr2));
        System.out.println(Arrays.equals(arr1, arr2));
        System.out.println(Arrays.deepEquals(arr1, arr2));
    }
}

Output

true
true
true

See Also