What this jar file appears to be doing to start up

gistfile1.txt

  private static void loadFREngineJNIDll()
    throws Exception
  {
    String str1 = null;
    ClassLoader localClassLoader = Engine.class.getClassLoader();
    if ((localClassLoader instanceof URLClassLoader))
    {
      localObject = (URLClassLoader)localClassLoader;
      for (URL localURL : ((URLClassLoader)localObject).getURLs())
      {
        String str3 = localURL.toString();
        if (str3.indexOf("com.abbyy.FREngine.jar") > 0)
        {
          int k = "file:/".length();
          int m = str3.length();
          str1 = str3.substring(k, m);
          str1 = str1.replace("%20", " ");
        }
      }
    }
    Object localObject = GetJNIDllFolder();
    if (!canWriteToDir((String)localObject)) {
      throw new Exception("Can't access to the JNI dll folder: \"" + (String)localObject + "\". Use method SetJNIDllFolder to set the correct path.");
    }
    if (str1 != null) {
      try
      {
        localObject = combinePaths((String)localObject, "Java");
        createPath((String)localObject);
        localObject = combinePaths((String)localObject, "com.abbyy.FREngine");
        createPath((String)localObject);
        
        unpackJar(str1, (String)localObject, "win");
      }
      catch (IOException localIOException) {}
    }
    String str2 = combinePaths((String)localObject, "win");
    str2 = combinePaths(str2, getJVMArchitecture());
    str2 = combinePaths(str2, "FREngine.JNI.dll");
    System.load(str2);
  }