获取系统时间

<pre name="code" class="java">package cn.lzhat.java.date;import java.sql.Timestamp;import java.util.Calendar;import java.util.Date;import java.util.GregorianCalendar;import java.util.TimeZone;public class DateTest {public static void main(String[] args) {System.out.println(System.currentTimeMillis());Date d = new Date();System.out.println(d);Calendar c = Calendar.getInstance();System.out.println(c);String s="1970-12-30 08:24:37.0";Timestamp ts = Timestamp.valueOf(s);System.out.println(ts);Calendar cJapan = new GregorianCalendar(TimeZone.getTimeZone("Japan"));System.out.println(cJapan.get(Calendar.HOUR_OF_DAY));}}/**1478599301316Tue Nov 08 18:01:41 CST 2016java.util.GregorianCalendar[time=1478599301353,areFieldsSet=true,areAllFieldsSet=true,lenient=true,zone=sun.util.calendar.ZoneInfo[id="Asia/Shanghai",offset=28800000,dstSavings=0,useDaylight=false,transitions=19,lastRule=null],firstDayOfWeek=1,minimalDaysInFirstWeek=1,ERA=1,YEAR=2016,MONTH=10,WEEK_OF_YEAR=46,WEEK_OF_MONTH=2,DAY_OF_MONTH=8,DAY_OF_YEAR=313,DAY_OF_WEEK=3,DAY_OF_WEEK_IN_MONTH=2,AM_PM=1,HOUR=6,HOUR_OF_DAY=18,MINUTE=1,SECOND=41,MILLISECOND=353,ZONE_OFFSET=28800000,DST_OFFSET=0]1970-12-30 08:24:37.019*/