原文地址:http://blog.csdn.net/shinn613/article/details/6293956
一.日期转换为时间戳
public long getTimestamp() throws ParseException{ Date date1 = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss") .parse("2009/12/11 00:00:00"); Date date2 = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss") .parse("1970/01/01 08:00:00"); long l = date1.getTime() - date2.getTime() > 0 ? date1.getTime() - date2.getTime() : date2.getTime() - date1.getTime(); long rand = (int)(Math.random()*1000); return rand; }
二.时间戳转换为date 型
public void getDate(String unixDate) { SimpleDateFormat fm1 = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss"); SimpleDateFormat fm2 = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss"); long unixLong = 0; String date = ""; try { unixLong = Long.parseLong(unixDate) * 1000; } catch(Exception ex) { System.out.println("String转换Long错误,请确认数据可以转换!"); } try { date = fm1.format(unixLong); date = fm2.format(new Date(date)); } catch(Exception ex) { System.out.println("String转换Date错误,请确认数据可以转换!"); } System.out.println(date); }
系统获取时间戳 :
System.currentTimeMillis();