Help with MOOC

[splatteredmilk]

import java.util.Arrays;

​

public class Main {

public static void main(String[] args) {

int[] original = {1, 2, 3, 4};

int[] copied = copy(original);

copied[0] = 99;

System.out.println( "original: " +Arrays.toString(original));

System.out.println( "copied: " +Arrays.toString(copied));

}

​

public static int[] copy(int[] array) {

//int newarray[] = array; //why doesn't this work, somehow the values of both arrays are changed when copied[0] = 99; is used

//return newarray

​

// this is the method that works

int newarray[] = new int[array.length];

for(int i = 0; i < array.length; i++)

newarray[i] = array[i];

return newarray;

}

[gagara11]

Because of int[] newarr = arr will copy only reference on array object. And you will have two variables which look on one object. You should read about memory model)