一个数组的内存图

package com.besttest.class1;
public class Demo01Array {
    public static void main(String[] args) {
        int [] arr1= new int[3];
        System.out.println(arr1);    //地址值
        System.out.println(arr1[0]);
        System.out.println(arr1[1]);
        System.out.println(arr1[2]);
        //改变数组当中元素的内容
        arr1[1]=10;
        arr1[2]=20;
        System.out.println(arr1[0]);
        System.out.println(arr1[1]);
        System.out.println(arr1[2]);
    }
}

两个数组的内存图

package com.besttest.class1;
public class Demo01Array {
    public static void main(String[] args) {
        int [] arr1= new int[3];
        System.out.println(arr1);    //地址值
        System.out.println(arr1[0]);
        System.out.println(arr1[1]);
        System.out.println(arr1[2]);
        //改变数组当中元素的内容
        arr1[1]=10;
        arr1[2]=20;
        System.out.println(arr1[0]);
        System.out.println(arr1[1]);
        System.out.println(arr1[2]);
        int [] arr2= new int[3];
        System.out.println(arr2);    //地址值
        System.out.println(arr2[0]);
        System.out.println(arr2[1]);
        System.out.println(arr2[2]);
        //改变数组当中元素的内容
        arr2[1]=10;
        arr2[2]=20;
        System.out.println(arr2[0]);
        System.out.println(arr2[1]);
        System.out.println(arr2[2]);
    }
}

两个引用指向同一个数组

package com.besttest.class1;
public class Demo01Array {
    public static void main(String[] args) {
        int [] arr1= new int[3];
        System.out.println(arr1);    //地址值
        System.out.println(arr1[0]);
        System.out.println(arr1[1]);
        System.out.println(arr1[2]);
        //改变数组当中元素的内容
        arr1[1]=10;
        arr1[2]=20;
        System.out.println(arr1[0]);
        System.out.println(arr1[1]);
        System.out.println(arr1[2]);
        //将arr1数组的地址值赋值给arr2
        int [] arr2= arr1;
        System.out.println(arr2);    //地址值
        System.out.println(arr2[0]);
        System.out.println(arr2[1]);
        System.out.println(arr2[2]);
        //改变数组当中元素的内容
        arr2[1]=100;
        arr2[2]=200;
        System.out.println(arr2[0]);
        System.out.println(arr2[1]);
        System.out.println(arr2[2]);
    }
}