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Java获取当前时间的年月日方法


package com.ob;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class DateTest {

public static void main(String[] args) 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 = "2013-9-13 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);
}
}
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