java calendar 与 date 转换

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• java calendar 与 date 转换
• java时间转换 0点被转化成24点public static String getDateTime(){Date d = new Date(); SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd kk:mm:ss "); sdf.setTimeZone(TimeZone.getTimeZone("Asia/Shanghai"));return sdf.format(d);}这个是我转化时间的方法,出现了问题.当时间为00:10:00时,会被转化成24:10:00这个是怎么回事.如何写才能变成00:10:00字符串替换就不要发了.
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• java date 转换我将两个long(time得到)相减,得到10172用simpledateformat.format(10172)得到08:00:10为什么是08呢?————————————————————————————SimpleDateFormat sf = new SimpleDateFormat("HH:mm:ss");//tieml,timef是long,前面转化过来的Date date = new Date(timel - timef);System.out.println("用时:" + (timel - timef));System.out.println("用时:" + sf.format(date));理论上应该是00:00:10怎么做可以正常显示00:00:10 re:不对吧,我的日期格式是HH:08的位置应该是小时的表示吧 ,难道说是因为默认时区,默认是本地时间+8h?
• java date 转换
• java calendar 与 date 转换
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