时间戳

package timestamp;


import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;


public class Test {
public static void main(String[] args) {
System.out.println("current time\t:"+System.currentTimeMillis());
String timezone_info = System.getProperty("user.timezone");   
System.out.println("当前的时区\t:"+timezone_info);   
System.out.println("时区信息\t\t:"+TimeZone.getDefault());  

SimpleDateFormat sd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  


sd.setTimeZone(TimeZone.getTimeZone("GMT+8"));  
String strDate = sd.format(new Date(System.currentTimeMillis())); 
System.out.println("正八区当前时间\t:"+strDate);

sd.setTimeZone(TimeZone.getTimeZone("GMT")); 
String strDate0 = sd.format(new Date(System.currentTimeMillis())); 
System.out.println("伦敦当前时间\t:"+strDate0);



sd.setTimeZone(TimeZone.getTimeZone("GMT-4")); 
String strDate1 = sd.format(new Date(System.currentTimeMillis())); 
System.out.println("东四区当前时间\t:"+strDate1);

Calendar c=Calendar.getInstance();
System.out.println(c.get(Calendar.YEAR));
System.out.println(c.get(Calendar.MONTH));
System.out.println(c.get(Calendar.DATE));
}


}