inital commit

IteratorExample1/src/Position.java

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+
+/**
+ * Data Structures & Algorithms 6th Edition
+ * Goodrick, Tamassia, Goldwasser
+ * Code Fragement 7.7
+ */
+public interface Position<E> {
+    /**
+     * Returns the element stored at this position.
+     * 
+     * @return the stored element
+     * @thorws IllegalStateExceptoin if position no longer valid
+     */
+    E getElement( ) throws IllegalStateException;
+}