java 参数化类型

 package com.gxf.collection;

 import java.util.LinkedList;

 public class TestForT<T> {
     private LinkedList<T> storage = new LinkedList<T>();

     /**
      * 压栈操作
      * @param element
      */
     public void push(T element){
         storage.addFirst(element);
     }
     /**
      * 出栈
      * @return
      */
     public T pop(){
         return storage.removeFirst();
     }

     /**
      * 判断栈是否为空
      * @return
      */
     public boolean isEmpty(){
         return storage.isEmpty();
     }

     public static void main(String[] args) {
         TestForT<Integer> stack = new TestForT<Integer>();
         stack.push(1);
         stack.push(2);
         stack.push(3);
         stack.push(4);
         stack.push(5);

         while(!stack.isEmpty()){
             System.out.println(stack.pop());
         }
     }

 }

output:

5
4
3
2
1