用java代码写一个学生管理系统
时间: 2023-08-01 09:14:25 浏览: 48
好的,下面是一个简单的Java代码实现学生管理系统的例子,可以实现添加学生、查找学生、修改学生信息、删除学生等基本功能。代码如下:
```
import java.util.ArrayList;
import java.util.Scanner;
public class StudentManagementSystem {
static ArrayList<Student> students = new ArrayList<>(); // 存储学生信息的集合
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. 添加学生");
System.out.println("2. 查找学生");
System.out.println("3. 修改学生信息");
System.out.println("4. 删除学生");
System.out.println("5. 显示所有学生");
System.out.println("0. 退出程序");
int choice = scanner.nextInt();
switch (choice) {
case 1:
addStudent();
break;
case 2:
findStudent();
break;
case 3:
modifyStudent();
break;
case 4:
deleteStudent();
break;
case 5:
displayAllStudents();
break;
case 0:
System.out.println("程序已退出!");
return;
}
}
}
// 添加学生
public static void addStudent() {
Scanner scanner = new Scanner(System.in);
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();
System.out.println("请输入学生性别:");
String gender = scanner.next();
System.out.println("请输入学生学号:");
int id = scanner.nextInt();
students.add(new Student(name, age, gender, id));
System.out.println("添加成功!");
}
// 查找学生
public static void findStudent() {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入要查找的学生学号:");
int id = scanner.nextInt();
for (Student student : students) {
if (student.getId() == id) {
System.out.println(student);
return;
}
}
System.out.println("未找到该学生!");
}
// 修改学生信息
public 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("请输入修改后的学生姓名:");
String name = scanner.next();
System.out.println("请输入修改后的学生年龄:");
int age = scanner.nextInt();
System.out.println("请输入修改后的学生性别:");
String gender = scanner.next();
student.setName(name);
student.setAge(age);
student.setGender(gender);
System.out.println("修改成功!");
return;
}
}
System.out.println("未找到该学生!");
}
// 删除学生
public 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("未找到该学生!");
}
// 显示所有学生
public static void displayAllStudents() {
if (students.isEmpty()) {
System.out.println("没有学生信息!");
return;
}
for (Student student : students) {
System.out.println(student);
}
}
}
class Student {
private String name;
private int age;
private String gender;
private int id;
public Student(String name, int age, String gender, int id) {
this.name = name;
this.age = age;
this.gender = gender;
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
@Override
public String toString() {
return "学生信息:{" +
"姓名='" + name + '\'' +
", 年龄=" + age +
", 性别='" + gender + '\'' +
", 学号=" + id +
'}';
}
}
```
这段代码实现了一个基本的学生信息管理系统,可以通过控制台输入指令来实现添加学生、查找学生、修改学生信息、删除学生、显示所有学生等基本功能。你可以根据需要自行修改代码,添加更多的功能和优化界面展示效果。
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