Java generics implement a stack class

1  Packagecom.xt.test;2 3 /**4 * Generic implementation stack, thinking in Java example5  * 6  * @authorAdministrator7  *8  * @param<T>9  */Ten  Public classLinkedtrack<t> { One     Private Static classNode<u> { A U Item; -Node<u>Next; -  the Node () { -item =NULL; -Next =NULL; -         } +  -Node (U item, node<u>next) { +              This. Item =item; A              This. Next =Next; at         } -  -         BooleanEnd () { -             returnitem = =NULL&& Next = =NULL; -         } -     } in  -     /** to * End Sentinel to indicate if it's at the end +      */ -     Privatenode<t> top =NewNode<t>(); the  *     /** $ * Add nodes to the node (include in)Panax Notoginseng      *  -      * @paramItem the      */ +      Public voidpush (T item) { Atop =NewNode<t>(item, top); the     } +  -     /** $ * Node Fetch node (out of) $      *  -      * @return -      */ the      PublicT Pop () { -T result =Top.item;Wuyi         if(!top.end ()) thetop =Top.next; -         returnresult; Wu     } -  About      Public Static voidMain (string[] args) { $Linkedtrack<string> LT =NewLinkedtrack<string>(); -          for(String s: "This is a test!". Split ("")) - Lt.push (s); - String S; A          while((s = Lt.pop ())! =NULL) + System.out.println (s); the     } -  $}

Read the code read for a long time do not understand how to achieve, eventually in the Eclipse code to write one side, people stupid, debugging run only to realize that the original < multi-layered nested principle > (own blind to the name), the specific look as follows:

Java generics implement a stack class