Java DB to Variable

public class main extends safe{
    static Scanner sc = new Scanner(System.in);
    public static String PID = "76561198142035536";
    public static String conURL = "jdbc:mysql://185.243.8.136:3306/altislife?verifyServerCertificate=false&useSSL=true";
    public static void main(String [] args){
        try{
            Class.forName("com.mysql.jdbc.Driver");
            Connection con=DriverManager.getConnection(conURL, user, pw);


            Statement stmt=con.createStatement();

            //String input = "SELECT bankacc FROM players WHERE pid'76561198142035536'";
            String DBinput = "SELECT pid, name, cash, bankacc, adminlevel, donorlevel, playtime FROM players WHERE pid='"+ PID+ "'";
            ResultSet rs=stmt.executeQuery(DBinput);
            System.out.println("1 Ausgabe | 2 Eingabe | 3 Beenden");
            int eingabe = sc.nextInt();
            switch(eingabe){
            case 1: readDB(rs,stmt,con) ;break;
            case 2: break;
            case 3: System.out.println("System ist beendet!"); System.exit(0)  ;break;
            }
            conClose(con);

        }catch(Exception e){ System.out.println(e);}
    }
    private static void conClose(Connection con) throws SQLException {
        con.close();
    }
    private static void readDB(ResultSet db,Statement stmt,Connection con) throws SQLException {
        while(db.next()){
            int test1  = db.getInt("bankacc");
            System.out.println("Geben sie einen Betrag ein: ");
            int test2 =  sc.nextInt();
            test1 = test1+test2;
            System.out.println(test1);
            updatedb(stmt, con, test1);
        }
    }
    private static void updatedb(Statement stmt, Connection con, int money) throws SQLException {
        String DBUpdater = "UPDATE players SET bankacc='" + money +"' WHERE pid='" + PID + "'";
        int rs = stmt.executeUpdate(DBUpdater);
        System.out.println(rs);
    }
}