diff --git a/p8/Stack.java b/p8/Stack.java
index f2b2ae7..e11667f 100644
--- a/p8/Stack.java
+++ b/p8/Stack.java
@@ -1,11 +1,17 @@
 package problem8;
 
 public class Stack {
+	
+	int top = 0;
+	List li = new List();
 	//collection
-	public void push(Object item,int index ) {
+	public void push(Object item ) {
+		li.add(item);
+		top++;
 		//logic to add item into collection
 	}
 	public void pop(int index ) {
+		li.remove(--top);
 		//logic to remove item from collection
 	}
 }