Program to copy all elements of one array into another array.

public class CopyArray {
public static void main(String[] args) {
int[] a = {1, 2, 3};
int[] b = new int[a.length];
for(int i=0; i<a.length; i++) {
b[i] = a[i];
}
for(int i=0; i<b.length; i++) {
System.out.print(b[i] + " ");
}
}
}

Output: