data_structures_free

net/datastructures/EmptyStackException.java

@@ -0,0 +1,16 @@
+package net.datastructures;
+//begin#fragment EmptyStackException
+/**
+ * Runtime exception thrown when one tries to perform operation top or
+ * pop on an empty stack.
+//end#fragment EmptyStackException
+ * @author Roberto Tamassia
+//begin#fragment EmptyStackException
+ */
+
+public class EmptyStackException extends RuntimeException {  
+  public EmptyStackException(String err) {
+    super(err);
+  }
+}
+//end#fragment EmptyStackException