import java.util.Scanner;

public class TeacherTest {
    public static void main(String[] args) {

    TeacherManager teacherManager = new TeacherManager();

    Scanner scanner = new Scanner(System.in);
    System.out.println("请添加教师信息：");

    int teacherId;
    String teacherName;
    int teacherDiscourse;

    int i, n = 1000;//最多只能存放1000个老师

    Teacher teacher;
    String q;
    for (i = 0; i < n; i++) {

        System.out.println("教师编号：");
        teacherId = scanner.nextInt();
        System.out.println("教师姓名：");
        teacherName = scanner.next();
        System.out.println("教师论文数：");
        teacherDiscourse = scanner.nextInt();
        System.out.println("添加成功！");

        teacher = new Teacher(teacherId, teacherName, teacherDiscourse);
        teacherManager.addTeacher(teacher, i);

        System.out.println("退出请按q，继续请按任意键：");
        q = scanner.next();
        if (q.equals("q") == true || q.equals("Q") == true)
        break;
    }

    n = i;//保存最后一位老师的下标

    System.out.println("您输入的信息如下：");

    Teacher[] teachers = teacherManager.getTeachers();
    System.out.println("编号" + "\t" + "姓名" + "\t" + "论文数");
    for (i = 0; i < n; i++)
        System.out.println(teachers[i]);

    System.out.println("论文大于20篇的教师信息如下：");
    for (i = 0; i < n; i++)
        if (teachers[i].teacherDiscourse > 20)
        System.out.println(teachers[i]);
    }
}

class TeacherManager {

    Teacher[] teachers = new Teacher[1000];

    public void addTeacher(Teacher teacher, int i) {
    teachers[i] = teacher;
    }

    public Teacher[] getTeachers() {
    return teachers;
    }

}

class Teacher {
    int teacherId;
    String teacherName;
    int teacherDiscourse;

    public Teacher(int teacherId, String teacherName, int teacherDiscourse) {
    super();
    this.teacherId = teacherId;
    this.teacherName = teacherName;
    this.teacherDiscourse = teacherDiscourse;
    }

    public String toString() {
    return teacherId + " " + teacherName + " " + teacherDiscourse;
    }

}