gozling
diff --git a/‎src/datastructure/Stack.java‎
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diff --git a/‎src/ds/Stack.java‎
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+package datastructure;
+
+/**
+ * 使用Java泛型实现栈
+ * 
+ * @author liuyuning
+ *
+ * @param <T>
+ */
+public class Stack<T> {
+
+	private static class Node<U> {
+		private U value;
+		private Node<U> next;
+
+		public Node() {
+			value = null;
+			next = null;
+		}
+
+		public Node(U value, Node<U> next) {
+			this.value = value;
+			this.next = next;
+		}
+
+		/**
+		 * 判断栈是否为空
+		 * 
+		 * @return true 如果为空；否则，false
+		 */
+		public boolean empty() {
+			return value == null && next == null;
+		}
+	}
+
+	/**
+	 * 定义栈顶元素
+	 */
+	private Node<T> top = new Node<T>();
+
+	/**
+	 * 入栈操作
+	 * 
+	 * @param value
+	 *            入栈元素的值
+	 */
+	public void push(T value) {
+		top = new Node<T>(value, top);
+	}
+
+	/**
+	 * 出栈操作
+	 * 
+	 * @return 栈顶元素的值
+	 */
+	public T pop() {
+		T value = top.value;
+		if (!top.empty()) {
+			top = top.next;
+		}
+		return value;
+	}
+
+	public static void main(String[] args) {
+		Stack<String> stack = new Stack<String>();
+		String string = "This is a test for stack";
+
+		System.out.println("入栈元素(String)依次为：");
+		for (String nodeIn : string.split(" ")) {
+			stack.push(nodeIn);
+			System.out.println(nodeIn);
+		}
+
+		System.out.println("出栈元素(String)依次为：");
+		String nodeOut;
+		while ((nodeOut = stack.pop()) != null) {
+			System.out.println(nodeOut);
+		}
+	}
+}