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SimpleDateFormat formatter =
new
SimpleDateFormat(
"yyyyMMdd"
);
      
Date currentTime =
new
java.util.Date();
//
µÃµ½µ±Ç°ÏµÍ³Ê±¼ä

      
      
long
now = currentTime.getTime();
//
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1970 Äê
1
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1
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00:00:00 GMT
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Date
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currentTime =
new
Date(now - 86400000 * 24);
      
      
long
now1 = currentTime.getTime();
      
currentTime =
new
Date(now1 - 86400000 * 6);
      
      
String current = formatter.format(currentTime);     
current ΪµÃµ½µÄstringÀàÐ͵ÄÖµ
 
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SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Calendar cal=Calendar.getInstance();
cal.add(Calendar.DATE, -1);    //µÃµ½Ç°Ò»Ìì
cal.add(Calendar.MONTH, -1);    //µÃµ½Ç°Ò»¸öÔÂ
long date = cal.getTimeInMillis();
Date kk=format.parse(df.format(new Date(date1)));
kkΪµÃµ½µÄʱ¼ä


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