用java写一个学生管理系统
时间: 2023-12-14 07:05:09 浏览: 31
好的,下面是一个简单的学生管理系统的Java代码示例:
```java
import java.util.ArrayList;
import java.util.Scanner;
public class StudentManagementSystem {
private ArrayList<Student> students;
public StudentManagementSystem() {
students = new ArrayList<>();
}
public void addStudent(Student student) {
students.add(student);
}
public void removeStudent(Student student) {
students.remove(student);
}
public void displayStudents() {
for (Student student : students) {
System.out.println(student.toString());
}
}
public static void main(String[] args) {
StudentManagementSystem sms = new StudentManagementSystem();
Scanner scanner = new Scanner(System.in);
while (true) {
System.out.println("请选择操作:");
System.out.println("1. 添加学生");
System.out.println("2. 删除学生");
System.out.println("3. 显示所有学生");
System.out.println("4. 退出");
int choice = scanner.nextInt();
switch (choice) {
case 1:
System.out.println("请输入学生姓名:");
String name = scanner.next();
System.out.println("请输入学生年龄:");
int age = scanner.nextInt();
System.out.println("请输入学生性别(M/F):");
char gender = scanner.next().charAt(0);
Student student = new Student(name, age, gender);
sms.addStudent(student);
System.out.println("添加成功!");
break;
case 2:
System.out.println("请输入要删除学生的姓名:");
String delName = scanner.next();
boolean isDeleted = false;
for (Student s : sms.students) {
if (s.getName().equals(delName)) {
sms.removeStudent(s);
isDeleted = true;
System.out.println("删除成功!");
break;
}
}
if (!isDeleted) {
System.out.println("未找到该学生!");
}
break;
case 3:
sms.displayStudents();
break;
case 4:
System.out.println("欢迎下次使用!");
System.exit(0);
break;
default:
System.out.println("无效的操作,请重新选择!");
}
}
}
}
class Student {
private String name;
private int age;
private char gender;
public Student(String name, int age, char gender) {
this.name = name;
this.age = age;
this.gender = gender;
}
public String getName() {
return name;
}
public int getAge() {
return age;
}
public char getGender() {
return gender;
}
@Override
public String toString() {
return "姓名:" + name + ",年龄:" + age + ",性别:" + gender;
}
}
```
这个学生管理系统可以添加学生、删除学生和显示所有学生的信息。运行程序后,会显示一个菜单,根据提示选择相应的操作。
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