增强的for循环合集

ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
		Student student = (Student) ac.getBean("student");
		System.out.println("name "+student.getName());
		//从 数组中循环取值;
		System.out.println("*******************从 数组中循环取值********************");
		for (Object crouse : student.getCarry()){
			System.out.println("课程有"+crouse.toString());	
		}
		//从 Set集合中循环取值;
		System.out.println("*******************从 Set集合中循环取值********************");
		for (String crouse : student.getCset()){
			System.out.println("课程有"+crouse);	
		}
		//从 List集合中循环取对象;
		System.out.println("*******************从 List集合中循环取对象********************");
		for (Crouse crouse : student.getClist()){
			System.out.println("课程有"+crouse.getName());	
		}
		//从 Map集合中循环取键值对;
		System.out.println("*******************从 Map集合中循环取键值对********************");
		for (Entry<String, Crouse> entry : student.getCmap().entrySet()){
			System.out.println("课程有"+entry.getKey()+" "+entry.getValue().getName());	
		}
		//从 Properties中循环取键值对 与map不同,Properties中的键值对都为字符串;
		System.out.println("*******************从Properties中循环取键值对********************");
		//方法1;
		Properties cpp = student.getCpp();
		Enumeration<Object> en = cpp.keys();
		while(en.hasMoreElements()){
			String key = (String) en.nextElement();
			System.out.println("课程有"+key+" "+cpp.getProperty(key));		
		}
		//方法2;	
		for (Entry<Object, Object> entry : cpp.entrySet()){
			System.out.println("课程有"+entry.getKey()+" "+entry.getValue());	
		}

null