初入java编程-面向对象

2023-09-10 阅读 16 评论 0

摘要：创建一个对象实体类： package test;public class StudentClass {//此类StudentClass的属性private int stu_id;private String stu_name;//无参构造方法public StudentClass() {super();}//有参构造方法public StudentClass(int stu_id, String stu_name) {super();th

创建一个对象实体类：

package test;public class StudentClass {//此类StudentClass的属性private int stu_id;private String stu_name;//无参构造方法public StudentClass() {super();}//有参构造方法public StudentClass(int stu_id, String stu_name) {super();this.stu_id = stu_id;this.stu_name = stu_name;}//属性的setter和getter方法，用来给对象StudentClass赋值public int getStu_id() {return stu_id;}public void setStu_id(int stu_id) {this.stu_id = stu_id;}public String getStu_name() {return stu_name;}public void setStu_name(String stu_name) {this.stu_name = stu_name;}@Override  //override ：子类(StudentClass) 重写父类(Object)的方法，public String toString() {return "StudentClass [stu_id=" + stu_id + ", stu_name=" + stu_name + "]";}}

下一步建立一个main方法测试：

package test;
/*** 学生类-测试* @author Drew**/
public class TestStudentClass {public static void main(String[] args) {//创建一个实体对象StudentClass studentClass = new StudentClass(21, "SuperDrew");//调用学生类的方法toString()
        System.out.println(studentClass.toString());}}