Here you can find the source of dateFormat(String date, String dateFormat)
public static Date dateFormat(String date, String dateFormat)
//package com.java2s; import java.text.SimpleDateFormat; import java.util.Date; public class Main { public static Date dateFormat(String date, String dateFormat) { if (date == null) return null; SimpleDateFormat format = new SimpleDateFormat(dateFormat); if (date != null) try { return format.parse(date); } catch (Exception ex) { }/*from ww w.j a v a2s . c o m*/ return null; } public static Date dateFormat(String date) { return dateFormat(date, "yyyy-MM-dd HH:mm:ss"); } public static String dateFormat(Date date, String dateFormat) { if (date == null) return ""; SimpleDateFormat format = new SimpleDateFormat(dateFormat); if (date != null) return format.format(date); return ""; } public static String dateFormat(Date date) { return dateFormat(date, "yyyy-MM-dd HH:mm:ss"); } }