J2ME中使用calendar类获得当前时间

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.util.*;
public class DateParser extends MIDlet{ private String[] weekDayArray={"日","一","二","三","四","五","六"};
public void startApp(){ Calendar calendar=Calendar.getInstance();
System.out.println(calendar.getTime());
int year=calendar.get(Calendar.YEAR);
int month=calendar.get(Calendar.MONTH);
int day=calendar.get(Calendar.DATE);
int weekDay=calendar.get((Calendar.DAY_OF_WEEK));
int am_pm=calendar.get(Calendar.AM_PM);
int hour=calendar.get(Calendar.HOUR_OF_DAY);
int minute=calendar.get(Calendar.MINUTE);
int second=calendar.get(Calendar.SECOND);
String dateStr=year+"年"+(month+1)+"月"+day+"日" +" 星期"+weekDayArray[weekDay-1];
if (am_pm==Calendar.AM){ dateStr+=" 上午";
} else{ dateStr+=" 下午";
} dateStr+=hour+"时"+minute+"分"+second+"秒";
Alert alert=new Alert("当前时间",dateStr,null,AlertType.ALARM);
alert.setTimeout(Alert.FOREVER);
Display.getDisplay(this).setCurrent(alert);
} public void destroyApp(boolean force){ } public void pauseApp(){ }}