UML

interface A{

public int f(int p){
}
public int g(){
}

}

abstract class B{

public int op(A m){

    return 0;
}

}


class E implements A{

private int[] q=new int(*);

public int f(int p){
    return 0;
    }
public int g(){
    return 0;
    }

}

class H{
protected E k;

public int w(B r){
    return 0;
    }
}



class C extends B{

public int op(A m){
    return 0;
}

}

class D extends B{
public int op(A m){
    return 0;
}


}