利用java语言实现一个学生管理系统
时间: 2023-07-20 18:23:28 浏览: 44
好的,学生管理系统一般包括学生信息的增删改查、成绩管理、课程管理等功能。下面是一个简单的学生管理系统的实现,你可以根据需求进行修改和完善。
```java
import java.util.ArrayList;
import java.util.Scanner;
public class StudentManagementSystem {
private ArrayList<Student> students;
public StudentManagementSystem() {
students = new ArrayList<Student>();
}
public void addStudent(Student student) {
students.add(student);
}
public void removeStudent(int index) {
students.remove(index);
}
public void updateStudent(int index, Student student) {
students.set(index, student);
}
public Student getStudent(int index) {
return students.get(index);
}
public int getStudentCount() {
return students.size();
}
public void printAllStudents() {
System.out.println("所有学生信息如下:");
for (Student student : students) {
System.out.println(student);
}
}
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
StudentManagementSystem system = new StudentManagementSystem();
while (true) {
System.out.println("请输入操作编号:");
System.out.println("1. 添加学生");
System.out.println("2. 删除学生");
System.out.println("3. 修改学生信息");
System.out.println("4. 查询学生信息");
System.out.println("5. 打印所有学生信息");
System.out.println("6. 退出系统");
int choice = scanner.nextInt();
scanner.nextLine();
switch (choice) {
case 1:
System.out.println("请输入学生姓名:");
String name = scanner.nextLine();
System.out.println("请输入学生年龄:");
int age = scanner.nextInt();
scanner.nextLine();
System.out.println("请输入学生性别(男/女):");
String gender = scanner.nextLine();
Student student = new Student(name, age, gender);
system.addStudent(student);
System.out.println("添加学生成功!");
break;
case 2:
System.out.println("请输入要删除的学生编号:");
int index = scanner.nextInt();
scanner.nextLine();
system.removeStudent(index);
System.out.println("删除学生成功!");
break;
case 3:
System.out.println("请输入要修改的学生编号:");
index = scanner.nextInt();
scanner.nextLine();
System.out.println("请输入学生姓名:");
name = scanner.nextLine();
System.out.println("请输入学生年龄:");
age = scanner.nextInt();
scanner.nextLine();
System.out.println("请输入学生性别(男/女):");
gender = scanner.nextLine();
student = new Student(name, age, gender);
system.updateStudent(index, student);
System.out.println("修改学生信息成功!");
break;
case 4:
System.out.println("请输入要查询的学生编号:");
index = scanner.nextInt();
scanner.nextLine();
student = system.getStudent(index);
System.out.println("查询到的学生信息如下:");
System.out.println(student);
break;
case 5:
system.printAllStudents();
break;
case 6:
System.out.println("退出系统!");
System.exit(0);
default:
System.out.println("输入的操作编号不合法,请重新输入!");
break;
}
}
}
}
class Student {
private String name;
private int age;
private String gender;
public Student(String name, int age, String gender) {
this.name = name;
this.age = age;
this.gender = gender;
}
public String getName() {
return name;
}
public int getAge() {
return age;
}
public String getGender() {
return gender;
}
public String toString() {
return "姓名:" + name + ",年龄:" + age + ",性别:" + gender;
}
}
```
以上代码中,我们定义了一个 `StudentManagementSystem` 类来管理学生信息,其中包括添加、删除、修改、查询和打印所有学生信息的功能。我们还定义了一个 `Student` 类来表示学生信息。在 `main` 方法中,我们通过一个循环来不断接收用户输入的操作,并执行相应的操作。