Memory map of an object array

时间:2021-08-23 20:48:53
Student类:
package com.itheima;
/*
* 自动生成构造方法:
* 代码区域右键 -- Source -- Generate Constructors from Superclass... 无参构造方法
* 代码区域右键 -- Source -- Generate Constructor using Fields... 带参构造方法
* 自动生成getXxx()/setXxx():
* 代码区域右键 -- Source -- Generate Getters and Setters...
*/
public class Student {
private String name;
private int age; public Student() { } public Student(String name, int age) {
this.name = name;
this.age = age;
} public String getName() {
return name;
} public void setName(String name) {
this.name = name;
} public int getAge() {
return age;
} public void setAge(int age) {
this.age = age;
} }
Student的测试类:
package com.itheima;
/*
* 创建一个学生数组,存储三个学生对象并遍历
*
* 分析:
* A:定义学生类
* B:创建学生数组
* C:创建学生对象
* D:把学生对象作为元素赋值给学生数组
* E:遍历学生数组
*/
public class StudentDemo {
public static void main(String[] args) {
//创建学生数组
Student[] students = new Student[3]; //创建学生对象
Student s1 = new Student("曹操",40);
Student s2 = new Student("刘备",35);
Student s3 = new Student("孙权",30); //把学生对象作为元素赋值给学生数组
students[0] = s1;
students[1] = s2;
students[2] = s3; //遍历学生数组
for(int x=0; x<students.length; x++) {
Student s = students[x];
//System.out.println(s);
System.out.println(s.getName()+"---"+s.getAge());
}
}
}

对应的内存图:

Memory map of an object array