public static void main(String[] args) {

//---------------------------------------------------------------------------------------------------------

		//计算机班所有人的名字

		Set<String> name=new HashSet<>();

		name.add("张三");

		name.add("庆儿");

		name.add("李四");

		name.add("赵四");

//---------------------------------------------------------------------------------------------------------

		//三国班所有人的名字

		Set<String> name1=new HashSet<>();

		name1.add("赵子龙");

		name1.add("刘备");

		name1.add("关羽");

		name1.add("张飞");

		System.out.println("三国班所有学生的名字："+name1);

//---------------------------------------------------------------------------------------------------------

		//一个系里面所有班级人数是姓名

		Map<String, Object> className=new HashMap<>();

		className.put("计算机班", name);

		className.put("三国班", name1);

		System.out.println("计算机系所有学生的姓名："+className);

//---------------------------------------------------------------------------------------------------------

		//系A

		Map<String, Object> series_A=new HashMap<>();

		series_A.put("系A班", name);

		series_A.put("系A班", name1);

		//系B

		Map<String, Object> series_B=new HashMap<>();

		series_B.put("系B班", name);

		series_B.put("系B班", name1);

		List<Map<String, Object>> collage1=new ArrayList<>();

		collage1.add(series_A);

		collage1.add(series_B);

//-----------------------------------------------------------------------------------------

		      //系C

				Map<String, Object> series_C=new HashMap<>();

				series_C.put("系C班", name);

				series_C.put("系C班", name1);

				//系D

				Map<String, Object> series_D=new HashMap<>();

				series_D.put("系D班", name);

				series_D.put("系D班", name1);

				List<Map<String, Object>> collage2=new ArrayList<>();

				collage2.add(series_C);

				collage2.add(series_D);

		Map<String, Object> school =new HashMap<>();

		school.put("三国学院", collage1);

		school.put("英雄学院", collage2);

		System.out.println("一个学校所有学院同学的姓名："+school);

	}