Constructor references to defeat erased types

AbstractIntConstructable.java

public abstract class AbstractIntConstructable {
    abstract public int intResult();
    protected int contained;
    protected int result;
    protected abstract void populate(int i);
    public AbstractIntConstructable(int i){
        this.populate(i);
    }
}

Box.java

public class Box<T extends AbstractIntConstructable> {
    IIntConstructor<T> constr;
    T internal;
    public void setContent(int i){
        internal = constr.construct(i);
    }

    public int getContent(){
        return internal.intResult();
    }

    public Box(IIntConstructor<T> con){
        this.constr = con;
    }

    public static void main(String... argv){
        Box<IntDoubler> doublerBox = new Box<IntDoubler>(IntDoubler::new);
        doublerBox.setContent(256);
        System.out.println("Doubler "+doublerBox.getContent());
        Box<IntTripler> triplerBox = new Box<IntTripler>(IntTripler::new);
        triplerBox.setContent(256);
        System.out.println("Tripler "+triplerBox.getContent());
    }
}

IIntConstructor.java

public interface IIntConstructor<T extends AbstractIntConstructable> {
    public T construct(int in);
}

IntDoubler.java

public class IntDoubler extends AbstractIntConstructable {

    private int result;

    public IntDoubler(int i) {
        super(i);
    }

    @Override
    public int intResult() {
        return result;
    }

    @Override
    protected void populate(int i) {
        this.result = 2 * i;
    }
}

IntTripler.java

public class IntTripler extends AbstractIntConstructable {

    private int result;

    public IntTripler(int i) {
        super(i);
    }

    @Override
    public int intResult() {
        return result;
    }

    @Override
    protected void populate(int i) {
        this.result = 3 * i;
    }
}