Java tutorial
//package com.java2s; import java.util.Hashtable; public class Main { public static Hashtable<String, String> theMimeTypes = new Hashtable<String, String>(); public static String getMimeType(String url) { String mime = null; int dot = url.lastIndexOf('.'); if (dot >= 0) mime = (String) theMimeTypes.get(url.substring(dot + 1).toLowerCase()); if (mime == null) mime = "application/octet-stream"; return mime; } }