//: c17:doubledispatch:TypedBin.java
// From Thinking in Java, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// ArrayList that knows how to grab the right type
package c17.doubledispatch;
import c17.trash.*;
import java.util.*;

public abstract class TypedBin {
  ArrayList v = new ArrayList();
  protected boolean addIt(Trash t) {
    v.add(t);
    return true;
  }
  public Iterator elements() {
    return v.iterator();
  }
  public boolean add(DDAluminum a) {
    return false;
  }
  public boolean add(DDPaper a) {
    return false;
  }
  public boolean add(DDGlass a) {
    return false;
  }
  public boolean add(DDCardboard a) {
    return false;
  }
} ///:~