时间戳转换date

//时间戳转换date

public static String timeStamp2Date(String seconds, String format) {

if (seconds ==null || seconds.isEmpty() || seconds.equals("null")) {

return "";

}

if (format ==null || format.isEmpty()) {

format ="yyyy-MM-dd HH:mm:ss";

}

SimpleDateFormat sdf =new SimpleDateFormat(format);

return sdf.format(new Date(Long.valueOf(seconds)));

}