Medium form

InterfaceAndOtherClasses.java

public interface ClapInterface {
     void onClick();
}
public class Below50 implements ClapInterface {
    @Override
    public void onClick() {
        System.out.println("You clapped!");
    }
}
public class Above50 implements ClapInterface {
    @Override
    public void onClick() {
            System.out.println("no impact");
    }
}
public class Main {
    public static void main(String[] args) {
        int clapCount = 0;
        ClapInterface clap = new Below50();
        clap.onClick(); // you clapped!
        clapCount += 1;
        clap.onClick(); //you clapped!
        clapCount += 1;
        .
        .
        . //50 times
        clap = new Above50();
        clap.onClick(); //no impact
    }
}