JAVA中获取当前系统时间的两种方法

一. 获取当前系统时间和日期并格式化输出:

import java.util.date;

import java.text.simpledateformat;

public class nowstring {

public static void main(string[] args) {

simpledateformat df = new simpledateformat("yyyy-mm-dd hh:mm:ss");//设置日期格式

system.out.println(df.format(new date()));// new date()为获取当前系统时间

}

二.

calendar c = calendar.getinstance();//可以对每个时间域单独修改

int year = c.get(calendar.year);

int month = c.get(calendar.month);

int date = c.get(calendar.date);

int hour = c.get(calendar.hour_of_day);

int minute = c.get(calendar.minute);

int second = c.get(calendar.second);

int week=c.get(calendar.day_of_week);

system.out.println(year + "/" + month + "/" + date + " " +hour + ":" +minute + ":" + second);