(1),获取当前日期时间,我来为大家科普一下关于java获取当前日期的前几天?下面希望有你要的答案,我们一起来看看吧!
java获取当前日期的前几天
(1),获取当前日期时间
String timeParse = "yyyy-MM-dd HH:mm:ss"; SimpleDateFormat simpleDateFormat = new SimpleDateFormat(timeParse); String strDateTime = simpleDateFormat.format(new Date()); System.out.println("当前系统时间:" strDateTime);
(2),获取今日是周几
Calendar calendar = Calendar.getInstance(); calendar.setTime(new Date()); int weekIdx = calendar.get(Calendar.DAY_OF_WEEK) - 1; switch (weekIdx) { case 1: System.out.println("今天是星期一"); break; case 2: System.out.println("今天是星期二"); break; case 3: System.out.println("今天是星期三"); break; case 4: System.out.println("今天是星期四"); break; case 5: System.out.println("今天是星期五"); case 6: System.out.println("今天是星期六"); break; default: System.out.println("今天是星期日"); break; }