- import java.text.ParseException;
- import java.text.SimpleDateFormat;
- import java.util.Calendar;
- public class DateDemo {
- static SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
- public static void main(String[] args) throws ParseException {
- String date = "2011-04-25 22:28:30";
- System.out.println(date);
- System.out.println("年份:" + getYear(date));
- System.out.println("月份:" + getMonth(date));
- System.out.println("日期:" + getDay(date));
- System.out.println("月初日期是: " + getMinMonthDate(date));
- System.out.println("月末日期是: " + getMaxMonthDate(date));
- }
- /**
- * 获取日期年份
- * @param date
- * @return
- * @throws ParseException
- */
- public static int getYear(String date) throws ParseException{
- Calendar calendar = Calendar.getInstance();
- calendar.setTime(dateFormat.parse(date));
- return calendar.get(Calendar.YEAR);
- }
- /**
- * 获取日期月份
- * @param date
- * @return
- * @throws ParseException
- */
- public static int getMonth(String date) throws ParseException{
- Calendar calendar = Calendar.getInstance();
- calendar.setTime(dateFormat.parse(date));
- return (calendar.get(Calendar.MONTH) + 1);
- }
- /**
- * 获取日期号
- * @param date
- * @return
- * @throws ParseException
- */
- public static int getDay(String date) throws ParseException{
- Calendar calendar = Calendar.getInstance();
- calendar.setTime(dateFormat.parse(date));
- return calendar.get(Calendar.DAY_OF_MONTH);
- }
- /**
- * 获取月份起始日期
- * @param date
- * @return
- * @throws ParseException
- */
- public static String getMinMonthDate(String date) throws ParseException{
- Calendar calendar = Calendar.getInstance();
- calendar.setTime(dateFormat.parse(date));
- calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH));
- return dateFormat.format(calendar.getTime());
- }
- /**
- * 获取月份最后日期
- * @param date
- * @return
- * @throws ParseException
- */
- public static String getMaxMonthDate(String date) throws ParseException{
- Calendar calendar = Calendar.getInstance();
- calendar.setTime(dateFormat.parse(date));
- calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
- return dateFormat.format(calendar.getTime());
- }
- }
import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Calendar; public class DateDemo { static SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd"); public static void main(String[] args) throws ParseException { String date = "2011-04-25 22:28:30"; System.out.println(date); System.out.println("年份:" + getYear(date)); System.out.println("月份:" + getMonth(date)); System.out.println("日期:" + getDay(date)); System.out.println("月初日期是: " + getMinMonthDate(date)); System.out.println("月末日期是: " + getMaxMonthDate(date)); } /** * 获取日期年份 * @param date * @return * @throws ParseException */ public static int getYear(String date) throws ParseException{ Calendar calendar = Calendar.getInstance(); calendar.setTime(dateFormat.parse(date)); return calendar.get(Calendar.YEAR); } /** * 获取日期月份 * @param date * @return * @throws ParseException */ public static int getMonth(String date) throws ParseException{ Calendar calendar = Calendar.getInstance(); calendar.setTime(dateFormat.parse(date)); return (calendar.get(Calendar.MONTH) + 1); } /** * 获取日期号 * @param date * @return * @throws ParseException */ public static int getDay(String date) throws ParseException{ Calendar calendar = Calendar.getInstance(); calendar.setTime(dateFormat.parse(date)); return calendar.get(Calendar.DAY_OF_MONTH); } /** * 获取月份起始日期 * @param date * @return * @throws ParseException */ public static String getMinMonthDate(String date) throws ParseException{ Calendar calendar = Calendar.getInstance(); calendar.setTime(dateFormat.parse(date)); calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH)); return dateFormat.format(calendar.getTime()); } /** * 获取月份最后日期 * @param date * @return * @throws ParseException */ public static String getMaxMonthDate(String date) throws ParseException{ Calendar calendar = Calendar.getInstance(); calendar.setTime(dateFormat.parse(date)); calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH)); return dateFormat.format(calendar.getTime()); } }
lxbccsu (中级程序员) 2011-03-25
不过对日期时间的操作处理,joda-time提供更好的支持
joda-time官网:
http://joda-time.sourceforge.net/
joda-time简介:
http://www.ibm.com/developerworks/cn/java/j-jodatime.html
joda-time官网:
http://joda-time.sourceforge.net/
joda-time简介:
http://www.ibm.com/developerworks/cn/java/j-jodatime.html