java.util.Calendar.getTimeInMillis() æ¹æ³è¿åæ¤Calendar以毫ç§ä¸ºåä½çæ¶é´ã 举ä¾ï¼ Calendar cal = Calendar.getInstance();//å建ä¸ä¸ªæ¥æçå®ä¾ System.out.println("Current time is : " + cal.getTimeInMillis());//è·åå°æ¥æç毫ç§
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