用java帮我写一个学生信息管理系统
时间: 2023-12-22 22:03:43 浏览: 33
好的,下面是一个简单的学生信息管理系统的Java代码示例,包含添加、删除、修改和查询学生信息的基本功能:
```
import java.util.ArrayList;
import java.util.Scanner;
public class StudentManagementSystem {
private ArrayList<Student> students;
private Scanner scanner;
public StudentManagementSystem() {
students = new ArrayList<>();
scanner = new Scanner(System.in);
}
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("性别:");
String gender = scanner.next();
System.out.print("年龄:");
int age = scanner.nextInt();
System.out.print("学号:");
String id = scanner.next();
Student student = new Student(name, gender, age, id);
students.add(student);
System.out.println("添加成功!");
}
public void deleteStudent() {
System.out.print("请输入要删除的学生学号:");
String id = scanner.next();
Student student = findStudentById(id);
if (student != null) {
students.remove(student);
System.out.println("删除成功!");
} else {
System.out.println("找不到该学生!");
}
}
public void updateStudent() {
System.out.print("请输入要修改的学生学号:");
String id = scanner.next();
Student student = findStudentById(id);
if (student != null) {
System.out.println("请输入修改后的学生信息:");
System.out.print("姓名:");
student.setName(scanner.next());
System.out.print("性别:");
student.setGender(scanner.next());
System.out.print("年龄:");
student.setAge(scanner.nextInt());
System.out.println("修改成功!");
} else {
System.out.println("找不到该学生!");
}
}
public void searchStudent() {
System.out.print("请输入要查询的学生学号:");
String id = scanner.next();
Student student = findStudentById(id);
if (student != null) {
System.out.println("查询结果:");
System.out.println(student);
} else {
System.out.println("找不到该学生!");
}
}
private Student findStudentById(String id) {
for (Student student : students) {
if (student.getId().equals(id)) {
return student;
}
}
return null;
}
public void displayStudents() {
System.out.println("所有学生信息:");
for (Student student : students) {
System.out.println(student);
}
}
public static void main(String[] args) {
StudentManagementSystem system = new StudentManagementSystem();
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("6.退出系统");
int choice = system.scanner.nextInt();
switch (choice) {
case 1:
system.addStudent();
break;
case 2:
system.deleteStudent();
break;
case 3:
system.updateStudent();
break;
case 4:
system.searchStudent();
break;
case 5:
system.displayStudents();
break;
case 6:
System.exit(0);
default:
System.out.println("无效的操作!");
break;
}
}
}
}
class Student {
private String name;
private String gender;
private int age;
private String id;
public Student(String name, String gender, int age, String id) {
this.name = name;
this.gender = gender;
this.age = age;
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 getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
@Override
public String toString() {
return "姓名:" + name + ",性别:" + gender + ",年龄:" + age + ",学号:" + id;
}
}
```
请注意,这只是一个基本的示例,没有进行任何数据验证或安全性检查。在实际应用中,你需要根据具体的需求进行更多的开发和优化。
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