Java获取时间年、月、日的方法

package com.date.demo;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
public class DateDemo {
public static void main(String args[]) {
System.out.println("---------------获取当前时间的年月日-----------------");
getMonthDay();
System.out.println("---------------获取自定义时间的年月日-----------------");
getMonthDay2Set();
}
/**
* 获取自定义时间的年月日
*/
private static void getMonthDay2Set() {
String dateStr = "2013-11-10 18:45:39";
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Calendar cal = Calendar.getInstance();
Date dt = null;
try {
dt = sdf.parse(dateStr);
cal.setTime(dt);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
int year = cal.get(Calendar.YEAR);
int month = cal.get(Calendar.MONTH) + 1;
int day = cal.get(Calendar.DAY_OF_MONTH);
int hour = cal.get(Calendar.HOUR_OF_DAY);
int minute = cal.get(Calendar.MINUTE);
int second = cal.get(Calendar.SECOND);
System.out.println("===年===" + year);
System.out.println("===月===" + month);
System.out.println("===日===" + day);
System.out.println("===时===" + hour);
System.out.println("===分===" + minute);
System.out.println("===秒===" + second);
}
/**
* 获取当前时间的年月日
*/
private static void getMonthDay() {
Calendar cal = Calendar.getInstance();
int year = cal.get(Calendar.YEAR);
int month = cal.get(Calendar.MONTH) + 1;
int day = cal.get(Calendar.DAY_OF_MONTH);
int hour = cal.get(Calendar.HOUR_OF_DAY);
int minute = cal.get(Calendar.MINUTE);
int second = cal.get(Calendar.SECOND);
System.out.println("===年===" + year);
System.out.println("===月===" + month);
System.out.println("===日===" + day);
System.out.println("===时===" + hour);
System.out.println("===分===" + minute);
System.out.println("===秒===" + second);
}
}