package 學(xué)生管理系統(tǒng);
 
public class Student {
    private String name;
    private String age;
    private String sex;
    private String number;
    private String classroom;
    public Student(){}
    public Student(String name, String age, String sex, String classroom,String number) {
        this.name = name;
        this.age = age;
        this.sex = sex;
        this.classroom = classroom;
        this.number=number;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getAge() {
        return age;
    }
 
    public void setAge(String age) {
        this.age = age;
    }
 
    public String getSex() {
        return sex;
    }
 
    public void setSex(String sex) {
        this.sex = sex;
    }
 
    public String getClassroom() {
        return classroom;
    }
 
    public void setClassroom(String classroom) {
        this.classroom = classroom;
    }
 
    public String getNumber() {
        return number;
    }
 
    public void setNumber(String number) {
        this.number = number;
    }
 
 

    @Override
    public String toString() {
 
        return "名字:"+name+" |性別:"+sex+" |年齡:"+age+"  |學(xué)號(hào):"+number+"  |班級(jí):"+classroom+"\n";
    }
}

public static void main(String[] args) {
        ArrayList<Student> arrayList=new ArrayList<Student>();
        password();//密碼驗(yàn)證
        while(true){
            menu();//菜單
            Scanner sc=new Scanner(System.in);
            try{
                int num=sc.nextInt();
                switch(num){
                    case 1:{
                        addStudent(arrayList);break;
                    }
                    case 2:{
                        deleteStudent(arrayList);break;
                    }
                    case 3:{
                        reviseStudent(arrayList);break;
                    }
                    case 4:{
                       oneStudent(arrayList);break;
                    }
                    case 5:{
                        checkStudent(arrayList);break;
                    }
                    case 6:{
                        System.out.println("退出成功");
                        System.exit(0);
                    }
                    default:{
                        System.out.println("輸入錯(cuò)誤，輸入0-6之間的數(shù)字");break;
                    }
                }}
            catch(Exception e){
                e.printStackTrace();
                System.out.println("你的輸入是非數(shù)字，請(qǐng)輸入0-6的數(shù)字");
            }
        }
    }//main方法

  public static void password(){
        System.out.println("***歡迎來(lái)到學(xué)生管理系統(tǒng)***");
        Scanner sc=new Scanner(System.in);
        System.out.print("請(qǐng)輸入管理員密碼:");
        String s="鍵盤(pán)敲爛";
       int  sum=3;
       while(true){
        String ss=sc.nextLine();
        if(ss.equals(s)){
            System.out.println("驗(yàn)證成功！");break;
        }else{sum--;
            System.out.print("密碼錯(cuò)誤，你還有"+sum+"次機(jī)會(huì)：");
        }
        if(sum==0){
            System.out.println("輸入上限，再見(jiàn)！");
            System.exit(0);
        }
    }}//密碼驗(yàn)證

  public static void menu(){
        System.out.println("-------歡迎來(lái)到學(xué)生管理系統(tǒng)-------");
        System.out.println("1.增加學(xué)生");
        System.out.println("2.刪除學(xué)生");
        System.out.println("3.修改學(xué)生");
        System.out.println("4.查找學(xué)生");
        System.out.println("5.查看所有學(xué)生");
        System.out.println("6.退出");
        System.out.println("請(qǐng)選擇:");
    }//打印菜單頁(yè)

 public static void addStudent(ArrayList<Student> arrayList){
        Scanner sc1=new Scanner(System.in);
        System.out.print("請(qǐng)輸入姓名：");
        String name=sc1.nextLine();
        System.out.print("請(qǐng)輸入年齡：");
        String age=sc1.nextLine();
        System.out.print("請(qǐng)輸入性別：");
        String sex=sc1.nextLine();
        System.out.print("請(qǐng)輸入學(xué)號(hào)：");
        String number=sc1.nextLine();
        System.out.print("請(qǐng)輸入班級(jí)：");
        String classroom=sc1.nextLine();
        Student stu=new Student();
        stu.setAge(age);
        stu.setClassroom(classroom);
        stu.setName(name);
        stu.setSex(sex);
        stu.setNumber(number);
         int kong=0;//用來(lái)定義是否已經(jīng)存在的學(xué)號(hào)
        for (int i=0;i<arrayList.size();i++){
            Student s=arrayList.get(i);
            if((arrayList.size())>1&&(s.getNumber().equals(number))&&(s.getClassroom().equals(classroom))){
                System.out.println("添加失敗，你輸入的學(xué)號(hào)在同一班級(jí)已存在");kong++;//存在就加一
                arrayList.remove(stu);
            }
        }
            if(name.length()==0||age.length()==0||sex.length()==0||classroom.length()==0||number.length()==0||kong!=0){
                System.out.println("有某項(xiàng)為空或?qū)W號(hào)在同一班已存在，添加失敗");
                arrayList.remove(stu);//移除該項(xiàng)
            } else{
                arrayList.add(stu);
                System.out.println("添加成功");}
    }//加信息

 public static void checkStudent(ArrayList<Student> array){
 
        if(array.isEmpty()){
            System.out.println("這里沒(méi)有任何信息，請(qǐng)?zhí)砑雍蟛榭矗?);
        }else{
            System.out.println(array);}
    }//查信息

 public static void deleteStudent(ArrayList<Student> array){
        if(array.isEmpty()){
            System.out.println("這里沒(méi)有任何信息，請(qǐng)?zhí)砑雍笤谶M(jìn)行操作！");
        }else{
            Scanner sc=new Scanner(System.in);
            System.out.println("請(qǐng)輸入你要?jiǎng)h除信息的名字");
            String str=sc.nextLine();
            int sum=0;
            for(int i=0;i<array.size();i++){
                Student s = array.get(i);
                if(s.getName().equals(str)){
                    array.remove(i);sum++;
                    System.out.println("刪除成功");
                }
            }if(sum==0){
                System.out.println("沒(méi)有該信息，刪除失??！");
            }
        }
    }//刪信息

  public static void reviseStudent(ArrayList<Student> arrayList){
        if(arrayList.isEmpty()){
            System.out.println("沒(méi)有任何信息，請(qǐng)輸入后在進(jìn)行操作！");
        }else {
            int sum=0;
            Scanner sc = new Scanner(System.in);
            System.out.println("請(qǐng)輸入你要換信息的名字");
            String name=sc.nextLine();
        for(int i=0;i<arrayList.size();i++){
           Student s1=arrayList.get(i);
            if(s1.getName().equals(name)){
               sum++;
           }
       }
           if(sum!=0){
               Scanner sc1=new Scanner(System.in);
               System.out.print("請(qǐng)輸入姓名：");
               String name1=sc1.nextLine();
               System.out.print("請(qǐng)輸入年齡：");
               String age=sc1.nextLine();
               System.out.print("請(qǐng)輸入性別：");
               String sex=sc1.nextLine();
               System.out.print("請(qǐng)輸入學(xué)號(hào)：");
               String number=sc1.nextLine();
               System.out.print("請(qǐng)輸入班級(jí)：");
               String classroom=sc1.nextLine();
               Student stu=new Student();
               stu.setAge(age);
               stu.setClassroom(classroom);
               stu.setName(name1);
               stu.setSex(sex);
               stu.setNumber(number);
               for (int i = 0; i < arrayList.size(); i++) {
                Student stu1 = arrayList.get(i);
                if (stu1.getName().equals(name)) {
                    arrayList.set(i, stu);
                    System.out.println("修改成功");break;
                }
            }}if(sum==0){
                System.out.println("修改失敗，沒(méi)有找到對(duì)應(yīng)的名字");
            }
        } }//改信息

 public static void oneStudent(ArrayList<Student> arrayList){
        if (arrayList.isEmpty()){
            System.out.println("沒(méi)有學(xué)生信息，請(qǐng)?zhí)砑雍笤俨檎?);
        }else{
            Scanner sc=new Scanner(System.in);
            System.out.print("請(qǐng)輸入你要查找學(xué)生的名字:");
            String name=sc.nextLine();
            int sum=0;
            for(int i=0;i<arrayList.size();i++){
                Student stu=arrayList.get(i);
                if(stu.getName().equals(name)){sum++;
                   System.out.println("姓名："+stu.getName()+"  年齡："+stu.getAge()+"  性 
    別："+stu.getSex()+"  班級(jí)："+stu.getClassroom()+"  學(xué)號(hào)："+stu.getNumber());
                }
            }if(sum==0){
                System.out.println("你查找的學(xué)生不存在");
            }
        }
    }//找信息