package com.oreilly.tiger.ch07;

import java.util.LinkedList;
import java.util.List;

public class GuitarManufacturerList extends LinkedList<String> {

  public GuitarManufacturerList() {
    super();
  }

  public boolean add(String manufacturer) {
    if (manufacturer.indexOf("Guitars") == -1) {
      return false;
    } else {
      super.add(manufacturer);
      return true;
    }
  }
}