Java语言考试管理系统

package Work.Day22_new2; import java.util.Arrays; import java.util.Scanner; public class ClassStatic { Scanner scanner = new Scanner(System.in); //注册 public void signIn(Teacher[] teachers, Student[] students) { System.out.println("1.老师注册 2.学生注册"); System.out.println("选择注册的身份账号"); int choose = scanner.nextInt(); System.out.println("账户名："); String name = scanner.next(); System.out.println("密码："); String pwd = scanner.next(); String regex = "[a-zA-Z0-9]{6,10}"; if (!pwd.matches(regex)) { System.out.println("密码格式错误!!!"); return; } int t1 = 0; int s1 = 0; if (choose == 1) { for (int i = 0; i < teachers.length; i++) { if (teachers[i] == null) { t1 = i; } } teachers[t1] = new Teacher(name, pwd); System.out.println("老师注册成功!!!"); } else if (choose == 2) { for (int i = 0; i < students.length; i++) { if (students[i] == null) { s1 = i; } } students[s1] = new Student(name, pwd); System.out.println("学生注册成功!!!"); } } //登录 public User[] login(Teacher[] teachers, Student[] students) { User[] user = null; System.out.println("账号:"); String name = scanner.next(); System.out.println("密码:"); String pwd = scanner.next(); int t = 0; for (int i = 0; i < teachers.length; i++) { if (teachers[i] != null && teachers[i].getName().equals(name) && teachers[i].getPwd().equals(pwd)) { t = i; } } if (teachers[t] != null && teachers[t].getName().equals(name) && teachers[t].getPwd().equals(pwd)) { System.out.println("老师登录成功!!!"); user = teachers; } else { int s = 0; for (int i = 0; i < students.length; i++) { if (students[i] != null && name.equals(students[i].getName()) && pwd.equals(students[i].getPwd())) { s = i; } } if (students[s] != null && name.equals(students[s].getName()) && pwd.equals(students[s].getPwd())) { System.out.println("学生登录成功!!!"); user = students; } else { System.out.println("登录失败，账号或密码错误!!!"); } } return user; } //修改 public void edit(Teacher[] teachers, Student[] students) { System.out.println("用户名:"); String name1 = scanner.next(); System.out.println("密码:"); String pwd1 = scanner.next(); for (int i = 0; i < teachers.length; i++) { if (teachers[i] != null && name1.equals(teachers[i].getName())) { System.out.println("修改前:" + teachers[i].getName() + " " + teachers[i].getPwd()); teachers[i] = new Teacher(name1, pwd1); System.out.println("修改后:" + teachers[i].getName() + " " + teachers[i].getPwd()); break; } } for (int i = 0; i < students.length; i++) { if (students[i] != null && name1.equals(students[i].getName())) { students[i] = new Student(name1, pwd1); System.out.println("修改后:" + students[i].getName() + " " + students[i].getPwd()); break; } } } public void addExam(Exam[] arr_exam) { for (int i = 0; i < arr_exam.length; i++) { System.out.println("添加考试试题："); String question = scanner.next(); System.out.println("题目对应的答案:"); String answers = scanner.next(); arr_exam[i] = new Exam(question, answers); } for (int i = 0; i < arr_exam.length; i++) { System.out.println(arr_exam[i].getQuestion() + " " + arr_exam[i].getAnswer()); } } public void AllGrades(int[] arr_All) { System.out.println(Arrays.toString(arr_All)); } public void lookExam(Exam[] arr_exam) { System.out.println("考试题目："); for (int i = 0; i < arr_exam.length; i++) { System.out.println(arr_exam[i].getQuestion()); } } public void writeAnswers(String[] arr_stuanswers) { for (int i = 0; i < arr_stuanswers.length; i++) { System.out.println("填写考试题目的答案:"); String writeAnswers = scanner.next(); arr_stuanswers[i] = writeAnswers; } System.out.println(Arrays.toString(arr_stuanswers)); } public void score(Exam[] arr_exam, String[] arr_stuanswers, int[] arr_All) { int score = 0; int index = 0; for (int i = 0; i < arr_exam.length; i++) { if (arr_stuanswers[i].equals(arr_exam[i].getAnswer())) { score += 20; if (arr_All[i] == 0) { index = i; } } } arr_All[index] = score; System.out.println("学生成绩:" + arr_All[index]); } public double averageScore(int[] arr_all) { int total = 0; for (int i = 0; i < arr_all.length; i++) { total += arr_all[i]; } double ave = total / arr_all.length; return ave; } public void numberPeople(int[] arr_all) { int pass = 0; int flunk = 0; for (int i = 0; i < arr_all.length; i++) { if (arr_all[i] < 60 && arr_all[i] > 0) { flunk++; } else if (arr_all[i] >= 60 && arr_all[i] <= 100) { pass++; } } System.out.println("及格人数:" + pass); System.out.println("不及格人数:" + flunk); } public void loginAfter(Teacher[] teachers, Student[] students, User[] users, Exam[] arr_exam, int[] arr_All, String[] arr_stuanswers) { if (users==null){ System.out.println("重新输入!!!"); } else if (users.equals(teachers)) { boolean flag = true; System.out.println("------老师登录后--------"); while (flag) { System.out.println("1.修改信息 2.添加试题,答案"); System.out.println("3.查看全部学生成绩 4.查看班级平均分 "); System.out.println("5.及格和不及格人数 6.退出 "); System.out.println("选择项目:"); int choose = scanner.nextInt(); switch (choose) { case 1: edit(teachers, students); break; case 2: addExam(arr_exam); break; case 3: AllGrades(arr_All); break; case 4: double ave = averageScore(arr_All); System.out.println(ave); break; case 5: numberPeople(arr_All); break; case 6: flag = false; System.out.println("退出成功!!!"); } } } else if (users.equals(students)) { boolean flag = true; System.out.println("------学生登录后--------"); while (flag) {