Android - Writing object to file

I have a method that's supposed to write an object to a file and I've tried a variety of methods but I either don't write to the file or I go into my catch statement, my code is as:

public void createFoo(Foo foo)
{
    ObjectOutputStream out = null;
    try
    {
        out = new ObjectOutputStream(new FileOutputStream("C:\\Users\\PERSON\\AndroidStudioProjects\\PROJECT\\bar.dat"));
        out.writeObject(event);
        Log.i("CreateFoo", "Write success");
    }
    catch (IOException e)
    {
        Log.i("CreateFoo", "Write - Catch error can't find .dat");
    }
    finally
    {
        try
        {
            out.close();
        }
        catch (Exception e)
        {
            Log.i("CreateFoo", "Write - Failed to close object output stream.");
        }
    }
}

I've tried looking at other threads but I'm still having trouble, my Foo object also has implements Serializable in its declaration.