Here you can find the source of getStringByFormat(String strDate, String format)
public static String getStringByFormat(String strDate, String format)
//package com.java2s; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; public class Main { /** ???????????????. */ public static String dateFormatYMDHMS = "yyyy-MM-dd HH:mm:ss"; public static String getStringByFormat(Date date, String format) { SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format); String strDate = null;/*from w w w . ja v a 2 s . c o m*/ try { strDate = mSimpleDateFormat.format(date); } catch (Exception e) { e.printStackTrace(); } return strDate; } public static String getStringByFormat(String strDate, String format) { String mDateTime = null; try { Calendar c = new GregorianCalendar(); SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat( dateFormatYMDHMS); c.setTime(mSimpleDateFormat.parse(strDate)); SimpleDateFormat mSimpleDateFormat2 = new SimpleDateFormat( format); mDateTime = mSimpleDateFormat2.format(c.getTime()); } catch (Exception e) { e.printStackTrace(); } return mDateTime; } public static String getStringByFormat(long milliseconds, String format) { String thisDateTime = null; try { SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat( format); thisDateTime = mSimpleDateFormat.format(milliseconds); } catch (Exception e) { e.printStackTrace(); } return thisDateTime; } }