/*
* Queue:�������
*
*/
package com.firsthomework;
import java.util.LinkedList;
import java.util.List;
import java.util.Queue;
@SuppressWarnings("all")
public class MyQueue {
private LinkedList ll =new LinkedList();
public void addLast(Object o){
ll.addLast(o);
}
public Object removeFirst(){
return ll.removeFirst();
}
public int size(){
return ll.size();
}
public boolean empty(){
return ll.size()==0;
}
public String toString(){
return ll.toString();
}
public static void main(String[] args) {
// TODO Auto-generated method stub
MyQueue e =new MyQueue();
System.out.println(e.empty());
e.addLast("hello");
e.addLast("world");
e.addLast("welcome");
e.addLast("java");
System.out.println(e.size());
e.removeFirst();
System.out.println(e.size());
System.out.println(e);
}
}