/**
   * 获取学生集合
   *
   * <p>[ 1:{ id:1 name:学生1 course:[学生1的课程1,学生1的课程2,学生1的课程3] }
   *
   * <p>2:{ id:2 name:学生2 course:[学生2的课程1,学生2的课程2,学生2的课程3] }
   *
   * <p>3:{ id:3 name:学生3 course:[学生3的课程1,学生3的课程2,学生3的课程3] } ]
   *
   * @return
   */
  public static ArrayList<Student> getData() {

    ArrayList<Student> students = new ArrayList<Student>();

    ArrayList<Course> courses = null;
    Student student = null;
    Course course = null;
    for (int i = 0; i < 3; i++) {

      courses = new ArrayList<Course>();

      student = new Student();
      student.id = i;
      student.name = new StringBuffer("学生").append((i + 1)).toString();

      for (int j = 0; j < 2; j++) {
        course = new Course();
        course.id = j;
        course.name = new StringBuffer(student.name).append("的课程").append((j + 1)).toString();
        courses.add(course);
      }

      student.courses = courses;
      students.add(student);
    }
    return students;
  }