1 files changed, 14 insertions, 0 deletions
diff --git a/BJC-Utils2/src/main/java/bjc/utils/esodata/SimpleStack.java b/BJC-Utils2/src/main/java/bjc/utils/esodata/SimpleStack.java
index 1344754..ec01280 100644
--- a/BJC-Utils2/src/main/java/bjc/utils/esodata/SimpleStack.java
+++ b/BJC-Utils2/src/main/java/bjc/utils/esodata/SimpleStack.java
@@ -28,11 +28,15 @@ public class SimpleStack<T> extends Stack<T> {
 
 	@Override
 	public T pop() {
+		if(backing.isEmpty()) throw new StackUnderflowException();
+		
 		return backing.pop();
 	}
 
 	@Override
 	public T top() {
+		if(backing.isEmpty()) throw new StackUnderflowException();
+		
 		return backing.peek();
 	}
 
@@ -45,4 +49,14 @@ public class SimpleStack<T> extends Stack<T> {
 	public boolean empty() {
 		return backing.size() == 0;
 	}
+	
+	@Override
+	public String toString() {
+		return backing.toString();
+	}
+	
+	@SuppressWarnings("unchecked")
+	public T[] toArray() {
+		return (T[]) backing.toArray();
+	}
 }