Ignore super class parameters

Hello.

Is there any method to hide extended parameters of a superclass? I can't change superclass because it is third party dependency. So I can change only my class.

My class:

public class AA extends BB  {

    private String feald1;

    public String getFeald1() {
        return feald1;
    }

    public void setFeald1(String feald1) {
        this.feald1 = feald1;
    }
}

Third party class:

public class BB {

    private String feald2;

    private CC cc;

    public CC getCc() {
        return cc;
    }

    public void setCc(CC cc) {
        this.cc = cc;
    }

    public String getFeald2() {
        return feald2;
    }

    public void setFeald2(String feald2) {
        this.feald2 = feald2;
    }
}

I want to ignore parameter cc. Could you help me pls?