Unable to create SVNRepository object

/*

* Initializes the library to work with a repository via

* different protocols.

*/

private static void setupLibrary() {

    /*

* For using over http:// and https://[/code] 
    */

DAVRepositoryFactory.setup();

    /*

* For using over svn:// and svn+xxx://

    */

SVNRepositoryFactoryImpl.setup();


    /*

 * For using over file:///

    */

FSRepositoryFactory.setup();

}