Save score on close and load it on start up - Android

You said you've searched on google? I'm not even an android developer, and I got this after a minute of looking:
http://developer.android.com/reference/java/io/FileWriter.html
http://developer.android.com/reference/java/io/FileReader.html

@Hiroshe you should spend more then minute because you would find there are multiple options that are explained here http://developer.android.com/guide/topics/data/data-storage.html
@Stefan the simplest and easiest is SharedPreference

Actualy the score is taken from mysql database and all i want to make is to read the score on application start up, im sorry i forgot to write this..

I have this code but it doesnt work application is crashing or not showing the results...

try {
            Class.forName("com.mysql.jdbc.Driver");
            Connection conn = DriverManager.getConnection("jdbc:mysql://DATABASE", "USERNAME", "PASSWORD");
            Statement stmt = conn.createStatement();
            ResultSet rset = stmt.executeQuery("select * from BackgammonResults");
            while (rset.next()) {
                asd = rset.getInt("Stefan"); // local variable
                asd1 = rset.getInt("Bojan"); // local variable

            }
            stefanRes.setText(asd);
            bojanRes.setText(asd1);
        } catch (Exception e) {
            e.printStackTrace();
        }

I'm not a huge fan of connecting a user-end application to a remote database like that. I would suggest making a TCP server that does the database access for you.

What does the error look like?

Theres much error lines i cannot copy and paste it all that.. but the first line is: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver but i have the MySQL-Connector...