取月份要加1.
判断当前月份的最大天数:
view plaincopy to clipboardprint?
1.Calendar cal = Calendar.getInstance();
2.int day=cal.getActualMaximum(Calendar.DAY_OF_MONTH);
3.System.out.println(day);
1.Calendar cal = Calendar.getInstance();
2.int day=cal.getActualMaximum(Calendar.DAY_OF_MONTH);
3.System.out.println(day);
java.util.Date
view plaincopy to clipboardprint?
1.java.util.Date today=new java.util.Date();
2.System.out.println("Today is "+formats.format(today));
1.java.util.Date today=new java.util.Date();
2.System.out.println("Today is "+formats.format(today));
取当月的第一天:
view plaincopy to clipboardprint?
1.java.text.SimpleDateFormat format = new java.text.SimpleDateFormat("yyyy-MM-01");
2.java.util.Date firstDay=new java.util.Date();
3.System.out.println("the month first day is "+formats.format(firstDay));
1.java.text.SimpleDateFormat format = new java.text.SimpleDateFormat("yyyy-MM-01");
2.java.util.Date firstDay=new java.util.Date();
3.System.out.println("the month first day is "+formats.format(firstDay));
取当月的最后一天:
view plaincopy to clipboardprint?
2.Calendar cal = Calendar.getInstance();
3.int maxDay=cals.getActualMaximum(Calendar.DAY_OF_MONTH);
4.java.text.Format formatter3=new java.text.SimpleDateFormat("yyyy-MM-"+maxDay);
5.System.out.println(formatter3.format(cal.getTime()));
2.Calendar cal = Calendar.getInstance();
3.int maxDay=cals.getActualMaximum(Calendar.DAY_OF_MONTH);
4.java.text.Format formatter3=new java.text.SimpleDateFormat("yyyy-MM-"+maxDay);
5.System.out.println(formatter3.format(cal.getTime()));
求两个日期之间相隔的天数:
view plaincopy to clipboardprint?
1.java.text.SimpleDateFormat format = new java.text.SimpleDateFormat("yyyy-MM-dd");
2.java.util.Date beginDate= format.parse("2007-12-24");
3.java.util.Date endDate= format.parse("2007-12-25");
4.long day=(date.getTime()-mydate.getTime())/(24*60*60*1000);
5.System.out.println("相隔的天数="+day);
1.java.text.SimpleDateFormat format = new java.text.SimpleDateFormat("yyyy-MM-dd");
2.java.util.Date beginDate= format.parse("2007-12-24");
3.java.util.Date endDate= format.parse("2007-12-25");
4.long day=(date.getTime()-mydate.getTime())/(24*60*60*1000);
5.System.out.println("相隔的天数="+day);