Java List集合和Map集合的综合应用

 

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);

	}