9月20日总结

今天进行了Java补测，题目比较简单，得了满分
代码如下

package com.exam;
//*班级：信2305-1
// 学号：20234102
// 姓名：孙艺伟 */import java.util.Scanner;class Student {private String stunumber; //存储学生的学号（有8位数字组成）private String name;      //存储学生的姓名private int age;          //存储学生的年龄private boolean sex;      //存储学生的性别，男生为false，女生为trueprivate double score;     //存储学生的成绩public Student() {}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;}}class StudentManager{Scanner scanner = new Scanner(System.in);private Student[] arr = new Student[5];private int iCount = 0;public void showMenu() {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.println("请输入选项：");int iChoice = scanner.nextInt();switch (iChoice) {case 1:showStudent();  //打印输出所有的学生信息break;case 2:addStudent();  //增加一名新学生的信息，需要判断学号是否重复，如果重复提示用户，并禁止增加新学生信息break;case 3:deleteStudent();   //删除一名学生信息（将该学生所有信息清空）break;case 4:updateStudent();  //修改学生信息break;case 5:selectStudent();  //查询并且输出该名学生的全部信息break;default:System.out.println("该选项不存在,请重新输入。");break;}}}public void showStudent()  //遍历输出{for (int i = 0; i < iCount; i++) {Student stu = arr[i];System.out.println((i + 1) + ".学号：" + stu.getStunumber() +"  姓名：" + stu.getName() +"  年龄：" + stu.getAge() +"  性别：" + stu.isSex() +"  成绩：" + stu.getScore());}}public void addStudent()   //添加学生信息{System.out.print("学号：");String number = scanner.next();for (int i = 0; i < iCount; i++) {if (arr[i].getStunumber().equals(number)) {System.out.println("学号重复，无法添加学生信息。");return;}}System.out.print("姓名：");String name = scanner.next();System.out.print("年龄：");int age = scanner.nextInt();scanner.nextLine();System.out.print("性别(男：false，女：true)：");boolean sex = scanner.nextBoolean();System.out.print("成绩：");double score = scanner.nextDouble();scanner.nextLine();if (iCount < arr.length) {arr[iCount++] = new Student(number, name, age, sex, score);System.out.println("学生信息添加成功。");} else {System.out.println("学生信息已满，无法添加新学生。");}}public void deleteStudent()   //删除学生信息{System.out.print("输入想要删除的学生学号");String stunumber = scanner.next();for (int i = 0; i < iCount; i++) {if (arr[i].getStunumber().equals(stunumber)) {arr[i] = null; // 清空学生信息System.arraycopy(arr, i + 1, arr, i, iCount - i - 1); // 移动数组arr[--iCount] = null; // 末尾置空System.out.println("学生信息删除成功。");return;}}System.out.println("未找到该学号的学生信息。");}public void updateStudent()  //修改学生信息{System.out.print("请输入要修改的学号: ");String stunumber = scanner.next();for (int i = 0; i < iCount; i++) {if (arr[i].getStunumber().equals(stunumber) == false) {System.out.println("学号不存在，无法修改学生信息。");return;}}System.out.print("请输入新姓名: ");String name = scanner.next();System.out.print("请输入新年龄: ");int age = scanner.nextInt();System.out.print("请输入新性别(男：false，女：true): ");boolean sex = scanner.nextBoolean();System.out.print("请输入新成绩: ");double score = scanner.nextDouble();for (int i = 0; i < iCount; i++) {if (arr[i].getStunumber().equals(stunumber)) {arr[i].setName(name);arr[i].setAge(age);arr[i].setSex(sex);arr[i].setScore(score);System.out.println("学生信息修改成功。");return;}}System.out.println("未找到该学号的学生信息。");}public void selectStudent()  //查询学生信息{System.out.print("请输入要查询的学号: ");String stunumber = scanner.next();for (int i = 0; i < iCount; i++) {if (arr[i].getStunumber().equals(stunumber)) {System.out.println("学号：" + arr[i].getStunumber() +"  姓名：" + arr[i].getName() +"  年龄：" + arr[i].getAge() +"  性别：" + arr[i].isSex() +"  成绩：" + arr[i].getScore());return;}}System.out.println("未找到该学号的学生信息。");}}class Main {public static void main(String[] args) {StudentManager s = new StudentManager();s.showMenu();}}