用Java编写一个学生管理系统(添加、删除、修改、查询学生信息)。
时间: 2024-05-03 09:17:00 浏览: 16
好的,下面是一个简单的学生管理系统的Java代码实现:
```java
import java.util.ArrayList;
import java.util.Scanner;
public class StudentManagementSystem {
private ArrayList<Student> studentList;
private Scanner scanner;
public StudentManagementSystem() {
studentList = new ArrayList<>();
scanner = new Scanner(System.in);
}
// 添加学生信息
public void addStudent() {
System.out.println("请输入学生信息:");
System.out.print("姓名:");
String name = scanner.next();
System.out.print("年龄:");
int age = scanner.nextInt();
System.out.print("性别:");
String gender = scanner.next();
System.out.print("学号:");
String id = scanner.next();
System.out.print("班级:");
String clazz = scanner.next();
Student student = new Student(name, age, gender, id, clazz);
studentList.add(student);
System.out.println("添加成功!");
}
// 删除学生信息
public void deleteStudent() {
System.out.print("请输入要删除的学生学号:");
String id = scanner.next();
boolean flag = false;
for (int i = 0; i < studentList.size(); i++) {
if (studentList.get(i).getId().equals(id)) {
studentList.remove(i);
System.out.println("删除成功!");
flag = true;
break;
}
}
if (!flag) {
System.out.println("未找到该学生!");
}
}
// 修改学生信息
public void modifyStudent() {
System.out.print("请输入要修改的学生学号:");
String id = scanner.next();
boolean flag = false;
for (int i = 0; i < studentList.size(); i++) {
if (studentList.get(i).getId().equals(id)) {
System.out.println("请输入修改后的学生信息:");
System.out.print("姓名:");
String name = scanner.next();
System.out.print("年龄:");
int age = scanner.nextInt();
System.out.print("性别:");
String gender = scanner.next();
System.out.print("班级:");
String clazz = scanner.next();
Student student = new Student(name, age, gender, id, clazz);
studentList.set(i, student);
System.out.println("修改成功!");
flag = true;
break;
}
}
if (!flag) {
System.out.println("未找到该学生!");
}
}
// 查询学生信息
public void queryStudent() {
System.out.print("请输入要查询的学生学号:");
String id = scanner.next();
boolean flag = false;
for (int i = 0; i < studentList.size(); i++) {
if (studentList.get(i).getId().equals(id)) {
System.out.println(studentList.get(i));
flag = true;
break;
}
}
if (!flag) {
System.out.println("未找到该学生!");
}
}
// 显示所有学生信息
public void displayAllStudent() {
System.out.println("所有学生信息如下:");
for (int i = 0; i < studentList.size(); i++) {
System.out.println(studentList.get(i));
}
}
// 启动学生管理系统
public void start() {
System.out.println("欢迎使用学生管理系统!");
while (true) {
System.out.println("请选择操作:");
System.out.println("1. 添加学生信息");
System.out.println("2. 删除学生信息");
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. 退出系统");
int choice = scanner.nextInt();
switch (choice) {
case 1:
addStudent();
break;
case 2:
deleteStudent();
break;
case 3:
modifyStudent();
break;
case 4:
queryStudent();
break;
case 5:
displayAllStudent();
break;
case 0:
System.out.println("谢谢使用!");
System.exit(0);
break;
default:
System.out.println("输入有误,请重新输入!");
break;
}
}
}
public static void main(String[] args) {
StudentManagementSystem system = new StudentManagementSystem();
system.start();
}
}
class Student {
private String name;
private int age;
private String gender;
private String id;
private String clazz;
public Student(String name, int age, String gender, String id, String clazz) {
this.name = name;
this.age = age;
this.gender = gender;
this.id = id;
this.clazz = clazz;
}
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 String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getClazz() {
return clazz;
}
public void setClazz(String clazz) {
this.clazz = clazz;
}
@Override
public String toString() {
return "学生信息:姓名=" + name +
", 年龄=" + age +
", 性别=" + gender +
", 学号=" + id +
", 班级=" + clazz;
}
}
```
这个学生管理系统可以完成添加、删除、修改、查询学生信息的功能,并且可以显示所有学生信息。
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