用虚线分割的是三个类，写的很清楚，跪求大神帮帮忙！package javaoopch5.training1;public class Student { private int id; private String name; private String sex; public int getId() { return id;}public void setId(int id) { this.id = id;}public String getName() { return name;}public void setName(String name) { this.name = name;}public String getSex() { return sex;}public void setSex(String sex) { this.sex = sex;}public Student() { super();}public Student(int id, String name, String sex) { super(); this.id = id; this.name = name; this.sex = sex;} }----------------------------------------------------------------package javaoopch5.training1;import java.util.ArrayList;import java.util.List;public class StuMar { private List list=new ArrayList(); public void AddStudent(Student s){ list.add(s); } public void showAll(){ System.out.println("学号\t姓名\t性别"); for(int i=0;i<list.size();i++){ Student s=(Student) list.get(i); System.out.println(s.getId()+"\t"+s.getName()+"\t"+s.getSex());} }}--------------------------------------------------------------------------------------------package javaoopch5.training1;import java.util.Scanner;public class test { public static void main(String[] args) { String choose2; int id = 0; String name = null; String sex = null; do{ System.out.println("欢迎使用学生管理系统"); System.out.println("请选择：1.添加学生 2.查询学生 3.删除学生\n"); Scanner sc=new Scanner(System.in); int input =sc.nextInt(); if(input==1) { System.out.println("请输入学生的学号\n"); id=sc.nextInt(); System.out.println("请输入学生的姓名\n"); name =sc.next(); System.out.println("请输入学生的性别\n"); sex=sc.next(); }else { System.out.println("选择其他"); } System.out.println("是否继续（y/n）"); choose2=sc.next(); }while(choose2.equals("y")); Student stu=new Student( id, name,sex); StuMar stum=new StuMar(); stum.AddStudent(stu); stum.showAll(); }}
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