Calendar类和Timezone类

import java.util.*;
import static java.util.Calendar.YEAR;
import static java.util.Calendar.MONTH;
import static java.util.Calendar.DATE;

class TestCalendar 
{
	public static void main(String[] args) 
	{
		Calendar calendar= Calendar.getInstance();
		System.out.println(calendar);
		Date date=calendar.getTime();
		System.out.println(date);
		System.out.println(calendar.get(YEAR));
		System.out.println(calendar.get(MONTH));
		System.out.println(calendar.get(DATE));

	}
}

import java.util.*;

class TestTimeZone 
{
	public static void main(String[] args) 
	{
		TimeZone tz= TimeZone.getDefault();
		String timeZoneName=tz.getDisplayName();
		System.out.println(timeZoneName);
		System.out.println("获取该时区的ID："+tz.getID());

		String[] timeZoneids=tz.getAvailableIDs();
        //System.out.println(Arrays.toString(timeZoneids));
		//for(int i=0;i<timeZoneids.length;i++){
		// System.out.println(timeZoneids[i]);
		//}
        Collection timeZoneidslist=Arrays.asList(timeZoneids);
		for(Iterator timeZoneid=timeZoneidslist.iterator();timeZoneid.hasNext();){
		     System.out.println(String.valueOf(timeZoneid.next()));
		}
	}
}