编写一个程序,模拟学生管理系统。可以实现对学生信息的添加、删除、修改和查询功能,要求使用List集合存储自定义的对象集合,并熟练使用List集合的中常用方法实现相关的操作。
时间: 2024-03-04 22:53:21 浏览: 39
好的,我可以为你提供一个Java代码示例,用于模拟学生管理系统。代码如下:
```java
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class StudentManagementSystem {
public static void main(String[] args) {
List<Student> studentList = new ArrayList<>();
Scanner scanner = new Scanner(System.in);
while (true) {
System.out.println("请选择操作:1.添加学生信息 2.删除学生信息 3.修改学生信息 4.查询学生信息 5.退出");
int choice = scanner.nextInt();
switch (choice) {
case 1:
System.out.println("请输入学生学号:");
int id = scanner.nextInt();
System.out.println("请输入学生姓名:");
String name = scanner.next();
System.out.println("请输入学生性别:");
String gender = scanner.next();
System.out.println("请输入学生年龄:");
int age = scanner.nextInt();
Student student = new Student(id, name, gender, age);
studentList.add(student);
System.out.println("添加成功!");
break;
case 2:
System.out.println("请输入要删除的学生学号:");
int deleteId = scanner.nextInt();
boolean deleteResult = false;
for (int i = 0; i < studentList.size(); i++) {
if (studentList.get(i).getId() == deleteId) {
studentList.remove(i);
deleteResult = true;
break;
}
}
if (deleteResult) {
System.out.println("删除成功!");
} else {
System.out.println("该学号对应的学生不存在!");
}
break;
case 3:
System.out.println("请输入要修改的学生学号:");
int modifyId = scanner.nextInt();
boolean modifyResult = false;
for (int i = 0; i < studentList.size(); i++) {
if (studentList.get(i).getId() == modifyId) {
System.out.println("请输入学生姓名:");
String modifyName = scanner.next();
System.out.println("请输入学生性别:");
String modifyGender = scanner.next();
System.out.println("请输入学生年龄:");
int modifyAge = scanner.nextInt();
studentList.get(i).setName(modifyName);
studentList.get(i).setGender(modifyGender);
studentList.get(i).setAge(modifyAge);
modifyResult = true;
break;
}
}
if (modifyResult) {
System.out.println("修改成功!");
} else {
System.out.println("该学号对应的学生不存在!");
}
break;
case 4:
if (studentList.size() == 0) {
System.out.println("当前无学生信息!");
} else {
System.out.println("学号\t姓名\t性别\t年龄");
for (int i = 0; i < studentList.size(); i++) {
Student s = studentList.get(i);
System.out.println(s.getId() + "\t" + s.getName() + "\t" + s.getGender() + "\t" + s.getAge());
}
}
break;
case 5:
System.out.println("感谢使用!");
System.exit(0);
break;
default:
System.out.println("输入有误,请重新输入!");
break;
}
}
}
}
class Student {
private int id;
private String name;
private String gender;
private int age;
public Student(int id, String name, String gender, int age) {
this.id = id;
this.name = name;
this.gender = gender;
this.age = age;
}
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 getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
```
这段代码实现了一个简单的学生管理系统,包括添加学生信息、删除学生信息、修改学生信息和查询学生信息等功能。在程序中,使用了List集合来存储学生信息,通过Scanner类实现用户输入。你可以根据自己的需求和实际情况对代码进行修改和优化。