BooleanContradictableType.java

public class BooleanContradictableType implements ContradictableType {

    boolean value;

    public BooleanContradictableType(boolean value) {
        this.value = value;
    }

    public boolean getValue() {
        return value;
    }

    @Override
    public boolean equivalentTo(ContradictableType other) {
        if (other == null || !(other instanceof BooleanContradictableType)) {
            return false;
        }
        return value == ((BooleanContradictableType) other).value;
    }

    @Override
    public boolean cancelsOutWith(ContradictableType other) {
        if (other == null || !(other instanceof BooleanContradictableType)) {
            return false;
        }
        return value != ((BooleanContradictableType) other).value;
    }
}