Date date = new Date(); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); date.setHours(23); date.setMinutes(59); date.setSeconds(59); System.out.println(sdf.format(date)); date.setHours(0); date.setMinutes(0); date.setSeconds(0); System.out.println(sdf.format(date));
Calendar.getInstance().get(Calendar.HOUR_OF_DAY)//小时
Calendar.getInstance().get(Calendar.MINUTE)//分钟
Calendar.getInstance().get(Calendar.SECOND)//秒判断即可
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
date.setHours(23);
date.setMinutes(59);
date.setSeconds(59);
System.out.println(sdf.format(date));
date.setHours(0);
date.setMinutes(0);
date.setSeconds(0);
System.out.println(sdf.format(date));
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR, 0);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MINUTE, 0);
date0 = calendar.getTime();//0点calendar.add(Calendar.DAY_OF_MONTH, 1);
calendar.add(Calendar.MINUTE, -1);
date1 = calendar.getTime();//23点59分59秒