java获取日期 时间 时区

[java]代码库

import java.util.*;
import java.text.*;

class Today {
	public static void main(String[] args) {
		GregorianCalendar gregorianCalendar = new GregorianCalendar();
		System.out.println("日历信息：\n" + gregorianCalendar);
		System.out.println("英文格式日期：" + gregorianCalendar.getTime());
		System.out.println("当前时区：" + gregorianCalendar.getTimeZone().getID());

		Date date = gregorianCalendar.getTime();
		DateFormat df = DateFormat.getDateInstance();
		String today = df.format(date);
		System.out.println("\n今天是： " + today);
	}
}