java实现栈-使用LinkedList

import java.util.LinkedList;

public class LinkedListStack {

public static void main(String[] args) {
myStack stack = new myStack();
for (int i = 0; i < 10; i++){
stack.push(i);
}
System.out.println(stack.top());
System.out.println(stack.top());
}

}
class myStack extends LinkedList{
public void push(Object v){
this.addLast(v);
}
public Object pop(){
return this.removeFirst();

}
public Object top(){
return this.getFirst();

}
}