public class Demo3
{
    public static void main(String[] args)
    {
        SomeClass a;    // Superclass variable
        
        a = new SomeClass();
        a.method1();        // (1) calls SomeClass.method1

        System.out.println();

        a = new NewClass();
        a.method1();        // (2) Same expression
                            //     but calls NewClass.method1
    }
}