Arrays copy and reference

package com.humborstad.Test_Java;

import java.util.Arrays;


public class Main {
    public static void main(String[] args){
        double[] originalArray = {0,1,2,3,4,5,6};

        //Will make a copy to the reference
        double[] referenceArray = originalArray;

        //Will make a true copy
        double[] trueCopyArray = Arrays.copyOf(originalArray, originalArray.length);

        //Lets try to modify the first reference:
        originalArray[0] = 1337;
        //We will see that this will stick to referenceArray too

        System.out.println("originalArray");
        for(double element : originalArray){
            System.out.println(element);
        }
        /*originalArray
        1337.0
        1.0
        2.0
        3.0
        4.0
        5.0
        6.0*/

        System.out.println("referenceArray");
        for(double element : referenceArray){
            System.out.println(element);
        }
        /*referenceArray
            1337.0
            1.0
            2.0
            3.0
            4.0
            5.0
            6.0*/

        System.out.println("trueCopyArray");
        for(double element : trueCopyArray){
            System.out.println(element);
        }
        /* Will print:
         * trueCopyArray
                0.0
                1.0
                2.0
                3.0
                4.0
                5.0
                6.0
        */
    }
}