用java写一个学生信息管理系统,要求功能如下:查询功能可以打印所有学生的信息,添加功能可以让用户输入学号,姓名,年龄,居住地,删除功能可以删除学生学号,修改功能可以修改原有信息
时间: 2024-03-15 10:44:56 浏览: 18
好的,这是一个简单的学生信息管理系统的Java代码,实现了上述功能。你可以根据自己的需求进行修改和扩展。
```java
import java.util.ArrayList;
import java.util.Scanner;
public class StudentManagementSystem {
private static ArrayList<Student> students = new ArrayList<>();
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
while (true) {
System.out.println("请选择操作:");
System.out.println("1. 查询所有学生信息");
System.out.println("2. 添加学生信息");
System.out.println("3. 删除学生信息");
System.out.println("4. 修改学生信息");
System.out.println("5. 退出系统");
int choice = scanner.nextInt();
switch (choice) {
case 1:
queryAllStudents();
break;
case 2:
addStudent();
break;
case 3:
deleteStudent();
break;
case 4:
modifyStudent();
break;
case 5:
System.out.println("感谢使用本系统!");
System.exit(0);
break;
default:
System.out.println("无效的选项,请重新选择!");
break;
}
}
}
private static void queryAllStudents() {
if (students.isEmpty()) {
System.out.println("暂无学生信息!");
return;
}
System.out.println("学号\t姓名\t年龄\t居住地");
for (Student student : students) {
System.out.println(student);
}
}
private static void addStudent() {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入学号:");
int id = scanner.nextInt();
System.out.println("请输入姓名:");
String name = scanner.next();
System.out.println("请输入年龄:");
int age = scanner.nextInt();
System.out.println("请输入居住地:");
String address = scanner.next();
Student student = new Student(id, name, age, address);
students.add(student);
System.out.println("添加成功!");
}
private static void deleteStudent() {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入要删除的学生学号:");
int id = scanner.nextInt();
for (Student student : students) {
if (student.getId() == id) {
students.remove(student);
System.out.println("删除成功!");
return;
}
}
System.out.println("没有找到该学生!");
}
private static void modifyStudent() {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入要修改的学生学号:");
int id = scanner.nextInt();
for (Student student : students) {
if (student.getId() == id) {
System.out.println("请输入新的姓名(原姓名为" + student.getName() + "):");
String name = scanner.next();
System.out.println("请输入新的年龄(原年龄为" + student.getAge() + "):");
int age = scanner.nextInt();
System.out.println("请输入新的居住地(原居住地为" + student.getAddress() + "):");
String address = scanner.next();
student.setName(name);
student.setAge(age);
student.setAddress(address);
System.out.println("修改成功!");
return;
}
}
System.out.println("没有找到该学生!");
}
}
class Student {
private int id;
private String name;
private int age;
private String address;
public Student(int id, String name, int age, String address) {
this.id = id;
this.name = name;
this.age = age;
this.address = address;
}
public int getId() {
return id;
}
public String getName() {
return name;
}
public int getAge() {
return age;
}
public String getAddress() {
return address;
}
public void setName(String name) {
this.name = name;
}
public void setAge(int age) {
this.age = age;
}
public void setAddress(String address) {
this.address = address;
}
@Override
public String toString() {
return id + "\t" + name + "\t" + age + "\t" + address;
}
}
```
注意事项:
1. 代码中使用了ArrayList存储学生信息,数据量较大时可能存在性能问题,可以考虑使用数据库等其他存储方式。
2. 代码中没有进行输入格式的验证,需要注意用户输入的合法性。
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