// Dynamic poly, Method overriding(same name, different class, same arguments(type, sequence, number, IS-A relationship)
class firstClass {
    void method1(int a) {
        System.out.println("1");
    }
}


class secondClass extends firstClass{
    void method1(String a) {
        System.out.println("2");
    }

    public static void main(String[] args) {
        firstClass fc = new firstClass();
        fc.method1(1);
        secondClass sc= new secondClass();
        sc.method1(45);
    }
}