eclipse写一个学生管理系统,要求有增删改查
时间: 2023-06-16 15:07:00 浏览: 211
好的,下面是一个简单的学生管理系统的示例代码:
```java
import java.util.ArrayList;
import java.util.Scanner;
public class StudentManagementSystem {
private static ArrayList<Student> students = new ArrayList<>();
private static Scanner scanner = new Scanner(System.in);
public static void main(String[] args) {
while (true) {
System.out.println("学生管理系统");
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. 退出");
System.out.print("请选择操作:");
int choice = scanner.nextInt();
switch (choice) {
case 1:
addStudent();
break;
case 2:
deleteStudent();
break;
case 3:
modifyStudent();
break;
case 4:
searchStudent();
break;
case 5:
System.exit(0);
break;
default:
System.out.println("无效的选择,请重新选择!");
break;
}
}
}
private static void addStudent() {
System.out.print("请输入学号:");
String id = scanner.next();
System.out.print("请输入姓名:");
String name = scanner.next();
System.out.print("请输入性别:");
String gender = scanner.next();
System.out.print("请输入年龄:");
int age = scanner.nextInt();
System.out.print("请输入专业:");
String major = scanner.next();
students.add(new Student(id, name, gender, age, major));
System.out.println("添加学生成功!");
}
private static void deleteStudent() {
System.out.print("请输入要删除的学生的学号:");
String id = scanner.next();
for (Student student : students) {
if (student.getId().equals(id)) {
students.remove(student);
System.out.println("删除学生成功!");
return;
}
}
System.out.println("未找到该学生!");
}
private static void modifyStudent() {
System.out.print("请输入要修改的学生的学号:");
String id = scanner.next();
for (Student student : students) {
if (student.getId().equals(id)) {
System.out.print("请输入新的姓名(留空表示不修改):");
String name = scanner.next();
if (!name.isEmpty()) {
student.setName(name);
}
System.out.print("请输入新的性别(留空表示不修改):");
String gender = scanner.next();
if (!gender.isEmpty()) {
student.setGender(gender);
}
System.out.print("请输入新的年龄(留空表示不修改):");
String ageStr = scanner.next();
if (!ageStr.isEmpty()) {
int age = Integer.parseInt(ageStr);
student.setAge(age);
}
System.out.print("请输入新的专业(留空表示不修改):");
String major = scanner.next();
if (!major.isEmpty()) {
student.setMajor(major);
}
System.out.println("修改学生信息成功!");
return;
}
}
System.out.println("未找到该学生!");
}
private static void searchStudent() {
System.out.print("请输入要查询的学生的学号:");
String id = scanner.next();
for (Student student : students) {
if (student.getId().equals(id)) {
System.out.println("学号\t姓名\t性别\t年龄\t专业");
System.out.println(student.toString());
return;
}
}
System.out.println("未找到该学生!");
}
}
class Student {
private String id;
private String name;
private String gender;
private int age;
private String major;
public Student(String id, String name, String gender, int age, String major) {
this.id = id;
this.name = name;
this.gender = gender;
this.age = age;
this.major = major;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getMajor() {
return major;
}
public void setMajor(String major) {
this.major = major;
}
@Override
public String toString() {
return id + "\t" + name + "\t" + gender + "\t" + age + "\t" + major;
}
}
```
这个学生管理系统包括添加学生、删除学生、修改学生信息和查询学生信息四个功能。每个功能都有相应的输入输出流程,用户可以根据提示进行操作。