2024/9/20

今天进行了Java测试成功通过。
import java.util.Scanner;
import java.util.Arrays;
import java.util.*;
class Student {
private String stunumber;//学号
private String name;//姓名
private int age;//年龄
private boolean sex;//男生为false，女生为true
private double score;//成绩

public Student(String stunumber, String name, int age, boolean sex, double score) {
this.stunumber = stunumber;
this.name = name;
this.age = age;
this.sex = sex;
this.score = score;
}

public String getStunumber() {
return stunumber;
}

public void setStunumber(String stunumber) {
this.stunumber = stunumber;
}

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 boolean isSex() {
return sex;
}

public void setSex(boolean sex) {
this.sex = sex;
}

public double getScore() {
return score;
}

public void setScore(double score) {
this.score = score;
}//构造函数
}

class StudentManager {
private Student[] students;
private int size;//已记录的学生数量

public StudentManager() {
students = new Student[5];//最多记录5名学生
size = 0;
}//构造函数

public void showStudent() {
for (int i = 0; i < size; i++) {
Student student = students[i];
System.out.println("学号：" + student.getStunumber() + ", 姓名：" + student.getName() + ", 年龄：" + student.getAge() + ", 性别：" + (student.isSex()? "女" : "男") + ", 成绩：" + student.getScore());
}
}//方法打印输出所有的学生信息；

public void addStudent(String stunumber, String name, int age, boolean sex, double score) {
for (int i = 0; i < size; i++) {
if (students[i].getStunumber().equals(stunumber)) {
System.out.println("学号重复，禁止增加新学生信息。");
return;
}//判断学号是否重复
}
if (size < students.length/存储学生对象的数组的长度/) {
students[size++] = new Student(stunumber, name, age, sex, score);//储存新数据
System.out.println("添加学生信息成功。");
} else {
System.out.println("存储空间已满，无法添加新学生信息。");
}
}//增加一名新学生的信息

public void deleteStudent(String stunumber) {
for (int i = 0; i < size; i++) {
if (students[i].getStunumber().equals(stunumber)) {
for (int j = i; j < size - 1; j++) {
students[j] = students[j + 1];
}
students[size - 1] = null;
size--;
return;
}
}
System.out.println("未找到该学号的学生，无法删除。");
}//删除一名学生信息

public void updateStudent(String stunumber, String name, int age, boolean sex, double score) {
for (int i = 0; i < size; i++) {
if (students[i].getStunumber().equals(stunumber)) {
students[i].setName(name);
students[i].setAge(age);
students[i].setSex(sex);
students[i].setScore(score);
System.out.println("修改学生信息成功。");
return;
}
}
System.out.println("未找到该学号的学生，无法修改。");
}//修改学生信息

public void selectStudent(String stunumber) {
for (int i = 0; i < size; i++) {
if (students[i].getStunumber().equals(stunumber)) {
Student student = students[i];
System.out.println("学号：" + student.getStunumber() + ", 姓名：" + student.getName() + ", 年龄：" + student.getAge() + ", 性别：" + (student.isSex()? "女" : "男") + ", 成绩：" + student.getScore());
return;
}
}
System.out.println("未找到该学号的学生。");
}//查询并且输出该名学生的全部信息

public static void main(String[] args) {
StudentManager manager = new StudentManager();
Scanner scanner = new Scanner(System.in);

while (true) {
System.out.println("");
System.out.println("石家庄铁道大学软件工程系学生信息管理系统");
System.out.println("");
System.out.println("1、遍历输出学生信息；");
System.out.println("2、新学生信息录入；");
System.out.println("3、删除学生信息；");
System.out.println("4、修改学生信息；");
System.out.println("5、查询学生信息；");
System.out.println("***************************************************************");
System.out.print("请输入功能选项：");
int choice = scanner.nextInt();

switch (choice) {
case 1:
manager.showStudent();
break;
case 2:
System.out.print("请输入学号：");
String stunumber2 = scanner.next();
System.out.print("请输入姓名：");
String name2 = scanner.next();
System.out.print("请输入年龄：");
int age2 = scanner.nextInt();
System.out.print("请输入性别（男为 false，女为 true）：");
boolean sex2 = scanner.nextBoolean();
System.out.print("请输入成绩：");
double score2 = scanner.nextDouble();
manager.addStudent(stunumber2, name2, age2, sex2, score2);
break;
case 3:
System.out.print("请输入要删除的学生学号：");
String stunumber3 = scanner.next();
manager.deleteStudent(stunumber3);
break;
case 4:
System.out.print("请输入要修改的学生学号：");
String stunumber4 = scanner.next();
System.out.print("请输入新姓名：");
String name4 = scanner.next();
System.out.print("请输入新年龄：");
int age4 = scanner.nextInt();
System.out.print("请输入新性别（男为 false，女为 true）：");
boolean sex4 = scanner.nextBoolean();
System.out.print("请输入新成绩：");
double score4 = scanner.nextDouble();
manager.updateStudent(stunumber4, name4, age4, sex4, score4);
break;
case 5:
System.out.print("请输入要查询的学生学号：");
String stunumber5 = scanner.next();
manager.selectStudent(stunumber5);
break;
default:
System.out.println("输入错误，请重新输入。");
}
}
}
}