Fix typos

Examples/java/extend/runme.java

@@ -55,7 +55,7 @@ public class runme {
     // methods of all these instances are treated the same. For items 0, 1, and
     // 2, all methods resolve in C++. For item 3, our CEO, getTitle calls
     // getPosition which resolves in Java. The call to getPosition is
-    // slightly different, however, because of the overidden getPosition() call, since
+    // slightly different, however, because of the overridden getPosition() call, since
     // now the object reference has been "laundered" by passing through
     // EmployeeList as an Employee*. Previously, Java resolved the call
     // immediately in CEO, but now Java thinks the object is an instance of