用java编写一个管理系统
时间: 2023-08-24 18:09:49 浏览: 37
好的,我可以为你提供一个简单的学生管理系统的示例代码,包含添加学生、查询学生、修改学生、删除学生等基本功能。
```java
import java.util.ArrayList;
import java.util.Scanner;
public class StudentManagementSystem {
private static ArrayList<Student> studentList = new ArrayList<>(); // 学生列表
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. 查询学生");
System.out.println("3. 修改学生");
System.out.println("4. 删除学生");
System.out.println("5. 退出系统");
int choice = scanner.nextInt();
switch (choice) {
case 1:
addStudent();
break;
case 2:
queryStudent();
break;
case 3:
modifyStudent();
break;
case 4:
deleteStudent();
break;
case 5:
System.exit(0);
break;
default:
System.out.println("输入有误,请重新输入!");
break;
}
}
}
// 添加学生
private 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(男/女):");
String sex = scanner.next();
Student student = new Student(name, age, sex);
studentList.add(student);
System.out.println("添加成功!");
}
// 查询学生
private static void queryStudent() {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入要查询的学生姓名:");
String name = scanner.nextLine();
for (Student student : studentList) {
if (student.getName().equals(name)) {
System.out.println(student);
return;
}
}
System.out.println("未查询到该学生信息!");
}
// 修改学生
private static void modifyStudent() {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入要修改的学生姓名:");
String name = scanner.nextLine();
for (Student student : studentList) {
if (student.getName().equals(name)) {
System.out.println("请输入修改后的学生姓名:");
String newName = scanner.nextLine();
System.out.println("请输入修改后的学生年龄:");
int newAge = scanner.nextInt();
System.out.println("请输入修改后的学生性别(男/女):");
String newSex = scanner.next();
student.setName(newName);
student.setAge(newAge);
student.setSex(newSex);
System.out.println("修改成功!");
return;
}
}
System.out.println("未查询到该学生信息!");
}
// 删除学生
private static void deleteStudent() {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入要删除的学生姓名:");
String name = scanner.nextLine();
for (Student student : studentList) {
if (student.getName().equals(name)) {
studentList.remove(student);
System.out.println("删除成功!");
return;
}
}
System.out.println("未查询到该学生信息!");
}
}
class Student {
private String name; // 姓名
private int age; // 年龄
private String sex; // 性别
public Student(String name, int age, String sex) {
this.name = name;
this.age = age;
this.sex = sex;
}
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 getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
@Override
public String toString() {
return "姓名:" + name + ",年龄:" + age + ",性别:" + sex;
}
}
```
这是一个简单的控制台程序,可以通过输入数字选择不同的操作。你可以根据自己的需求进行修改和扩展。
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