Problems with reading object stored on the phone

I have got a problem with reading a object that is stored on my phone. On every tutorial and example I find it is only Stringobject that is opened with BufferedReader, but if I have made a object of a different class named SavedResult that I wish to open

FileInputStream fIn = context.openFileInput(FILENAME);
//I dont know what code to use here ?
SavedResult sr=???????
Does anyone know how to make this work?

Regards Micke