package com.oreilly.tiger.ch01;

import java.io.IOException;
import java.io.PrintStream;
import java.util.LinkedList;
import java.util.Queue;

public class QueueTester {

  public Queue q;

  public QueueTester() {
    q = new LinkedList();
  }

  public void testFIFO(PrintStream out) throws IOException {
    q.add("First");
    q.add("Second");
    q.add("Third");

    Object o;
    while ((o = q.poll()) != null) {
      out.println(o);
    }
  }

  public static void main(String[] args) {
    QueueTester tester = new QueueTester();

    try {
      tester.testFIFO(System.out);
    } catch (IOException e) {
      e.printStackTrace();
    } 
  }
}