Java Program to Copy all Elements of one Array into Another Array

In the following example of Java program that copies all the elements of one array into another array :

Program :

import java.util.Arrays;

public class CopyArray {
    public static void main(String[] args) {
        int[] arr1 = {1, 2, 3, 4, 5, 6, 7, 8, 9};
        int[] arr2 = new int[arr1.length];
        for(int i = 0; i < arr1.length; i++) {
            arr2[i] = arr1[i];
        }
        System.out.println("Array 1: " + Arrays.toString(arr1));
        System.out.println("Array 2: " + Arrays.toString(arr2));
    }
}

Output :

Array 1: [1, 2, 3, 4, 5, 6, 7, 8, 9]
Array 2: [1, 2, 3, 4, 5, 6, 7, 8, 9]

In this program, we have two integer arrays arr1 and arr2. We first initialize arr1 with some elements. We then initialize arr2 with the same size as arr1 using new int[arr1.length].

We then loop through arr1 using a for loop and copy each element to arr2 using arr2[i] = arr1[i]. Finally, we print both arrays using Arrays.toString() method.