用JAVA写一个学生管理系统
时间: 2023-06-23 16:10:12 浏览: 54
好的,下面是一个简单的学生管理系统的代码示例:
```
import java.util.ArrayList;
import java.util.Scanner;
public class StudentManagementSystem {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
ArrayList<Student> studentList = new ArrayList<Student>();
while (true) {
System.out.println("1. 添加学生");
System.out.println("2. 删除学生");
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");
System.out.print("请输入操作编号:");
int option = scanner.nextInt();
switch (option) {
case 1:
System.out.print("请输入学生姓名:");
String name = scanner.next();
System.out.print("请输入学生年龄:");
int age = scanner.nextInt();
System.out.print("请输入学生性别:");
String gender = scanner.next();
Student student = new Student(name, age, gender);
studentList.add(student);
System.out.println("添加成功!");
break;
case 2:
System.out.print("请输入要删除学生的姓名:");
String deleteName = scanner.next();
boolean isDeleted = false;
for (int i = 0; i < studentList.size(); i++) {
if (studentList.get(i).getName().equals(deleteName)) {
studentList.remove(i);
isDeleted = true;
break;
}
}
if (isDeleted) {
System.out.println("删除成功!");
} else {
System.out.println("找不到该学生!");
}
break;
case 3:
System.out.print("请输入要修改学生的姓名:");
String modifyName = scanner.next();
boolean isModified = false;
for (int i = 0; i < studentList.size(); i++) {
if (studentList.get(i).getName().equals(modifyName)) {
System.out.print("请输入学生新的年龄:");
int newAge = scanner.nextInt();
System.out.print("请输入学生新的性别:");
String newGender = scanner.next();
studentList.get(i).setAge(newAge);
studentList.get(i).setGender(newGender);
isModified = true;
break;
}
}
if (isModified) {
System.out.println("修改成功!");
} else {
System.out.println("找不到该学生!");
}
break;
case 4:
System.out.print("请输入要查询学生的姓名:");
String queryName = scanner.next();
boolean isFound = false;
for (int i = 0; i < studentList.size(); i++) {
if (studentList.get(i).getName().equals(queryName)) {
System.out.println(studentList.get(i));
isFound = true;
break;
}
}
if (!isFound) {
System.out.println("找不到该学生!");
}
break;
case 5:
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));
}
break;
case 6:
System.out.println("谢谢使用,再见!");
System.exit(0);
break;
default:
System.out.println("输入有误,请重新输入!");
break;
}
}
}
}
class Student {
private String name;
private int age;
private String gender;
public Student(String name, int age, String gender) {
this.name = name;
this.age = age;
this.gender = gender;
}
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;
}
@Override
public String toString() {
return "姓名:" + name + ",年龄:" + age + ",性别:" + gender;
}
}
```
这个学生管理系统可以实现添加学生、删除学生、修改学生信息、查询学生信息、显示所有学生信息和退出系统的功能。用户可以通过输入数字对应的操作编号来进行相应的操作。