用java写出一个学生信息管理系统
时间: 2023-07-18 20:23:01 浏览: 40
好的,这是一个简单的学生信息管理系统的Java代码,包括添加学生、查询学生、删除学生和修改学生信息的功能。请注意,这只是一个基础框架,您可以在此基础上进行更多的功能扩展和改进。
```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(int index) {
students.remove(index);
}
public void updateStudent(int index, Student student) {
students.set(index, student);
}
public Student findStudent(String name) {
for (Student student : students) {
if (student.getName().equals(name)) {
return student;
}
}
return null;
}
public void display() {
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("请选择操作:");
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. 显示所有学生信息");
System.out.println("0. 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:");
String gender = scanner.next();
Student student = new Student(name, age, gender);
system.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();
Student delStudent = system.findStudent(delName);
if (delStudent == null) {
System.out.println("没有找到该学生!");
} else {
system.removeStudent(system.students.indexOf(delStudent));
System.out.println("删除成功!");
}
break;
case 3:
System.out.println("请输入要修改学生的姓名:");
String updateName = scanner.next();
Student updateStudent = system.findStudent(updateName);
if (updateStudent == null) {
System.out.println("没有找到该学生!");
} else {
System.out.println("请输入学生年龄:");
int updateAge = scanner.nextInt();
System.out.println("请输入学生性别:");
String updateGender = scanner.next();
Student newStudent = new Student(updateName, updateAge, updateGender);
system.updateStudent(system.students.indexOf(updateStudent), newStudent);
System.out.println("修改成功!");
}
break;
case 4:
System.out.println("请输入要查询学生的姓名:");
String findName = scanner.next();
Student findStudent = system.findStudent(findName);
if (findStudent == null) {
System.out.println("没有找到该学生!");
} else {
System.out.println(findStudent);
}
break;
case 5:
system.display();
break;
case 0:
System.exit(0);
default:
System.out.println("输入有误,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 void setName(String name) {
this.name = name;
}
public void setAge(int age) {
this.age = age;
}
public void setGender(String gender) {
this.gender = gender;
}
@Override
public String toString() {
return "姓名:" + name + ",年龄:" + age + ",性别:" + gender;
}
}
```