Java tutorial
//package com.java2s; //License from project: Apache License import android.webkit.MimeTypeMap; import java.io.File; public class Main { public static String getMIMETypeFromUrl(final File file, final String defaultValue) { MimeTypeMap mime = MimeTypeMap.getSingleton(); int index = file.getName().lastIndexOf('.') + 1; String ext = file.getName().substring(index).toLowerCase(); final String mimeType = mime.getMimeTypeFromExtension(ext); if (mimeType != null) { return mimeType; } return defaultValue; } }