用java写一个学生管理系统
时间: 2023-03-20 15:00:12 浏览: 51
学生管理系统是一个非常常见的项目,可以用Java语言来实现。下面是一个基本的Java学生管理系统的示例:
1. 定义一个学生类
```
public class Student {
private String name;
private int id;
private int age;
public Student(String name, int id, int age) {
this.name = name;
this.id = id;
this.age = age;
}
public String getName() {
return name;
}
public int getId() {
return id;
}
public int getAge() {
return age;
}
public void setName(String name) {
this.name = name;
}
public void setId(int id) {
this.id = id;
}
public void setAge(int age) {
this.age = age;
}
}
```
2. 创建一个学生管理系统类
```
import java.util.ArrayList;
import java.util.Scanner;
public class StudentManagementSystem {
private ArrayList<Student> studentList;
private Scanner scanner;
public StudentManagementSystem() {
studentList = new ArrayList<>();
scanner = new Scanner(System.in);
}
public void addStudent() {
System.out.println("请输入学生姓名:");
String name = scanner.nextLine();
System.out.println("请输入学生ID:");
int id = scanner.nextInt();
scanner.nextLine();
System.out.println("请输入学生年龄:");
int age = scanner.nextInt();
scanner.nextLine();
Student student = new Student(name, id, age);
studentList.add(student);
System.out.println("添加成功!");
}
public void deleteStudent() {
System.out.println("请输入要删除的学生ID:");
int id = scanner.nextInt();
scanner.nextLine();
for (int i = 0; i < studentList.size(); i++) {
Student student = studentList.get(i);
if (student.getId() == id) {
studentList.remove(i);
System.out.println("删除成功!");
return;
}
}
System.out.println("找不到该学生!");
}
public void displayStudent() {
for (Student student : studentList) {
System.out.println("姓名:" + student.getName() + ",ID:" + student.getId() + ",年龄:" + student.getAge());
}
}
public static void main(String[] args) {
StudentManagementSystem system = new StudentManagementSystem();
boolean flag = true;
while (flag) {
System.out.println("请输入您要进行的操作:1-添加学生,2-删除学生,3-显示学生信息,0-退出系统");
int choice = system.scanner.nextInt();
system.scanner.nextLine();
switch (choice) {
case 1:
system.addStudent();
break;
case 2:
system.deleteStudent();
break;
case 3:
system.displayStudent();
break;
case 0:
flag = false;
break;
default:
System.out.println("输入有误,请重新输入!");
break;
}
}
System.out.println("谢谢使用!");
}
}
```
以上就是一个简单的Java学生管理系统的实现。您可以根据需要进行修改和优化。