1th Object Array

1.1 Overview of Object arrays
A: An array of basic types: the stored elements are basic types
Int[] arr={1,2,3,4}
B: Object array: The stored element is a reference type
Student[] Stus=new student[3];

Student represents a custom class
The element data type of stus[0],stus[1],stus[2] in the Stus array is student,
Can point to a student object
1.2 Object Array Case:
Create a student array, store three student objects and traverse
1.2.1 Case Code One:

  Package com.itheima;/* * automatically generates construction methods: * Code Area right--source--Generate constructors from superclass ...        Non-parametric construction method * Code Area right--source--Generate Constructor using fields ... Construction method with parameters * automatically generated getxxx ()/setxxx (): * Code Area right--source--Generate Getters and Setters ... */public class Student {private Stri ng 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.) {this.age = age;}}  

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());}}}

1.3 Memory diagram of an object array

1th Object Array