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public static void main(String[] args) {

Calendar c1 = new GregorianCalendar();

c1.set(Calendar.HOUR_OF_DAY, 0);

c1.set(Calendar.MINUTE, 0);

c1.set(Calendar.SECOND, 0);

System.out.println(c1.getTime().toLocaleString());

Calendar c2 = new GregorianCalendar();

c2.set(Calendar.HOUR_OF_DAY, 23);

c2.set(Calendar.MINUTE, 59);

c2.set(Calendar.SECOND, 59);

System.out.println(c2.getTime().toLocaleString());

}

稍微修改下

/**

* @param args

*/

public static void main(String[] args) {

Calendar calendar = Calendar.getInstance();

calendar.setTime(new Date());

calendar.set(Calendar.HOUR_OF_DAY, 0);

calendar.set(Calendar.MINUTE, 0);

calendar.set(Calendar.SECOND, 0);

Date start = calendar.getTime();

calendar.add(Calendar.DAY_OF_MONTH, 1);

calendar.add(Calendar.SECOND, -1);

Date end = calendar.getTime();

System.out.println(start);

System.out.println(end);

}

或者更简单

/**

* @param args

* @throws ParseException

*/

public static void main(String[] args) throws ParseException {

Calendar calendar = Calendar.getInstance();

calendar.setTime(new Date());

calendar.set(Calendar.HOUR_OF_DAY, 0);

calendar.set(Calendar.MINUTE, 0);

calendar.set(Calendar.SECOND, 0);

Date start = calendar.getTime();

calendar.add(Calendar.DAY_OF_MONTH, 1);

calendar.add(Calendar.SECOND, -1);

Date end = calendar.getTime();

System.out.println(start);

System.out.println(end);

/* other way */

SimpleDateFormat formater = new SimpleDateFormat("yyyy/MM/dd");

SimpleDateFormat formater2 = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");

start = formater2.parse(formater.format(new Date())+ " 00:00:00");

end = formater2.parse(formater.format(new Date())+ " 23:59:59");

System.out.println(start);

System.out.println(end);

}

source: http://bbs.csdn.net/topics/390562030?page=1

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