通过Calendar 获取时间

@Test
	public void get_Time_by_Calendar()
	{
		Calendar c=Calendar.getInstance();
		System.out.println(c.get(Calendar.HOUR_OF_DAY));//时
		System.out.println(c.get(Calendar.MINUTE));//分
		System.out.println(c.get(Calendar.SECOND)); //秒
		System.out.println(c.get(Calendar.DAY_OF_WEEK)); //周  周日为1
		
		System.out.println(Calendar.SUNDAY);// 1
		System.out.println(Calendar.SATURDAY);// 7
	}