J2ME 关于时间

  Calendar.getInstance(TimeZone.getTimeZone("GMT+8:00"));

可以解决J2ME慢八小时的问题，它是根据时区来设置的！

package com.iwidsets.util;import java.util.Calendar;import java.util.Date;import java.util.TimeZone;public class TimeUtil {private static Calendar calendar;private static StringBuffer timeBuffer;private static Date date;static {calendar = Calendar.getInstance(TimeZone.getTimeZone("GMT+8:00"));date = new Date();}private static void setTime(long time) {date.setTime(time);calendar.setTime(date);}/** * Put "0" to the beginning of time string if it is less than 10. */public static String formatTimeInteger(int n) {if (n < 10)return "0" + n;elsereturn String.valueOf(n);}/** * Put "0" to the beginning of time string if it is less than 1000. */private static String formatYearInteger(int n) {if (n < 10)return "000" + n;else if (n < 100)return "00" + n;else if (n < 1000)return "0" + n;elsereturn String.valueOf(n);}/** * Convert time to string. YYYY-MM-DD HH:MM:SS */public static synchronized String toString(long time) {return toString(time, true, true);}public static synchronized String toString(long time,boolean hasDelimitors, boolean hasTime) {setTime(time);StringBuffer s = new StringBuffer();s.append(formatYearInteger(calendar.get(Calendar.YEAR))).append(hasDelimitors ? "-" : "");s.append(formatTimeInteger(calendar.get(Calendar.MONTH) + 1)).append(hasDelimitors ? "-" : "");s.append(formatTimeInteger(calendar.get(Calendar.DAY_OF_MONTH))).append(hasDelimitors && hasTime ? " " : "");if (hasTime) {s.append(formatTimeInteger(calendar.get(Calendar.HOUR_OF_DAY))).append(hasDelimitors ? ":" : "");s.append(formatTimeInteger(calendar.get(Calendar.MINUTE))).append(hasDelimitors ? ":" : "");s.append(formatTimeInteger(calendar.get(Calendar.SECOND)));}return s.toString();}public static synchronized String getHM(long time) {setTime(time);timeBuffer = new StringBuffer();timeBuffer.append(formatTimeInteger(calendar.get(Calendar.HOUR_OF_DAY))).append(":");timeBuffer.append(formatTimeInteger(calendar.get(Calendar.MINUTE)));return timeBuffer.toString();}}  

 

 

 

 

例子

public static String getHM() { SimpleDateFormat bartDateFormat = new SimpleDateFormat("HH:mm"); Date date = new Date(); return bartDateFormat.format(date); }