编写一个程序,模拟学生管理系统Java
时间: 2023-07-14 20:12:46 浏览: 45
以下是一个简单的学生管理系统Java程序,包括添加学生、查找学生、删除学生和显示所有学生的功能:
```java
import java.util.ArrayList;
import java.util.Scanner;
public class StudentManagementSystem {
private ArrayList<Student> students;
public StudentManagementSystem() {
students = new ArrayList<Student>();
}
public void addStudent(Student student) {
students.add(student);
}
public Student findStudent(String name) {
for (Student student : students) {
if (student.getName().equals(name)) {
return student;
}
}
return null;
}
public void deleteStudent(String name) {
Student student = findStudent(name);
if (student != null) {
students.remove(student);
System.out.println("删除成功!");
} else {
System.out.println("该学生不存在!");
}
}
public void displayStudents() {
for (Student student : students) {
System.out.println(student);
}
}
public static void main(String[] args) {
StudentManagementSystem system = new StudentManagementSystem();
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. 删除学生");
System.out.println("4. 显示所有学生");
System.out.println("5. 退出");
int choice = scanner.nextInt();
switch (choice) {
case 1:
System.out.println("请输入学生姓名:");
String name = scanner.next();
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:");
String id = scanner.next();
Student student = new Student(name, age, gender, id);
system.addStudent(student);
System.out.println("添加成功!");
break;
case 2:
System.out.println("请输入要查找的学生姓名:");
name = scanner.next();
student = system.findStudent(name);
if (student != null) {
System.out.println(student);
} else {
System.out.println("该学生不存在!");
}
break;
case 3:
System.out.println("请输入要删除的学生姓名:");
name = scanner.next();
system.deleteStudent(name);
break;
case 4:
system.displayStudents();
break;
case 5:
System.out.println("退出程序");
System.exit(0);
break;
default:
System.out.println("输入错误,请重新输入!");
break;
}
}
}
}
class Student {
private String name;
private int age;
private String gender;
private String id;
public Student(String name, int age, String gender, String id) {
this.name = name;
this.age = age;
this.gender = gender;
this.id = id;
}
public String getName() {
return name;
}
public int getAge() {
return age;
}
public String getGender() {
return gender;
}
public String getId() {
return id;
}
public String toString() {
return "姓名:" + name + " 年龄:" + age + " 性别:" + gender + " 学号:" + id;
}
}
```
在程序中,我们定义了一个 `Student` 类表示学生,并且在 `StudentManagementSystem` 类中实现了添加学生、查找学生、删除学生和显示所有学生的功能。我们使用一个 `ArrayList` 来存储所有学生对象,并通过控制台输入来进行操作。