package test;
import java.sql.Timestamp;
import java.util.Calendar;
import java.util.Date;
public class TestGetSystemTime {
static Date nowTime = null;
public static void main(String[] args) {
// 以下为 Clendar 测试代码
int yyyy, mm, dd,hh,mmm,ss,wm;
Calendar c = Calendar.getInstance();
yyyy = c.get(Calendar.YEAR);
mm = c.get(Calendar.MONTH) + 1;
dd = c.get(Calendar.DAY_OF_MONTH);
hh = c.get(Calendar.HOUR);
mmm = c.get(Calendar.MINUTE);
ss = c.get(Calendar.SECOND);
wm = c.get(Calendar.MILLISECOND);
System.out.println("year = " + yyyy);
System.out.println("month = " + mm);
System.out.println("day = " + dd);
System.out.println("hh = " + hh);
System.out.println("mmm = " + mmm);
System.out.println("ss = " + ss);
System.out.println("wm = " + wm);
// 1. System.currentTimeMillis() 获取系统时间的代码
Timestamp ts = new Timestamp(System.currentTimeMillis());
String dateStr1 = ts.toString();
System.out.println("System.currentTimeMillis() = " + dateStr1);
// 2. date 为获得系统时间的另外一种方法
Date date = new Date();
String dateStr2 = new Timestamp(date.getTime()).toString();
System.out.println(dateStr2);
// 得到JAVA运行环境的一些基本属性
System.getProperties().list(System.out);
}
}
执行结果:
year = 2010
month = 6
day = 8
hh = 6
mmm = 11
ss = 53
wm = 703
System.currentTimeMillis() = 2010-06-08 18:11:53.703
2010-06-08 18:11:53.703
java运行的基本信息略
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