Java获取当前时间的年月日方法

Java 获取当前时间的年、月、日、小时、分钟、秒数。

public static void getDateTime() throws ParseException{
Calendar now = Calendar.getInstance();
System.out.println("年: " + now.get(Calendar.YEAR));
System.out.println("月: " + (now.get(Calendar.MONTH) + 1) + "");
System.out.println("日: " + now.get(Calendar.DAY_OF_MONTH));
System.out.println("时: " + now.get(Calendar.HOUR_OF_DAY));
System.out.println("分: " + now.get(Calendar.MINUTE));
System.out.println("秒: " + now.get(Calendar.SECOND));
System.out.println("当前时间毫秒数：" + now.getTimeInMillis());
System.out.println(now.getTime());

Date d = new Date();
System.out.println(d);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String dateNowStr = sdf.format(d);
System.out.println("格式化后的日期：" + dateNowStr);

String str = "2012-1-13 17:26:33";    //要跟上面sdf定义的格式一样
Date today = sdf.parse(str);
System.out.println("字符串转成日期：" + today);
}

输出结果：

2014-12-26

年: 2014

月: 12

日: 26

时: 15

分: 6

秒: 35

当前时间毫秒数：1419577595014

Fri Dec 26 15:06:35 CST 2014

Fri Dec 26 15:06:35 CST 2014

格式化后的日期：2014-12-26 15:06:35

字符串转成日期：Fri Jan 13 17:26:33 CST 2012