Java 2 Exam Guide (English Original Version) (English Original Version)

Author: William Stanek
Publisher:
Publish Date: 2002-04-01
Features: This book is part of the best-selling All-in-One certification series published by McGraw-Hill in the United States. It covers all the content needed to take the Java Programmer and Developer certification exams, primarily focusing on answer techniques, Java programming fundamentals and keywords, application objects and classes, accessing and managing databases, designing application interfaces, and more. Each chapter includes new examples, exercises, and Q&A. The accompanying CD-ROM provides a large number of authentic exam questions and practice tests that closely resemble the real test environment. For readers who intend to take the Java 2 certification exam or learn Java 2, this book is an excellent reference.
You probably narrow down to either a or b. The answer is b. The reason is that the method invoked depends on the actual object type referenced by the variable, not on the declared type of the variable.