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Complete, trusted preparation for the Java Programmer II exam OCP: Oracle Certified Professional Java SE 8 Programmer II Study Guide is your comprehensive companion for preparing for Exam 1Z0-809 as well as upgrade Exam 1Z0-810 and Exam 1Z0-813. With full coverage of 100% of exam objectives, this invaluable guide reinforces what you know, teaches you what you don't know, and gives you the hands-on practice you need to boost your skills. Written by expert Java developers, this book goes beyond mere exam prep with the insight, explanations and perspectives that come from years of experience.…mehr
Complete, trusted preparation for the Java Programmer II exam OCP: Oracle Certified Professional Java SE 8 Programmer II Study Guide is your comprehensive companion for preparing for Exam 1Z0-809 as well as upgrade Exam 1Z0-810 and Exam 1Z0-813. With full coverage of 100% of exam objectives, this invaluable guide reinforces what you know, teaches you what you don't know, and gives you the hands-on practice you need to boost your skills. Written by expert Java developers, this book goes beyond mere exam prep with the insight, explanations and perspectives that come from years of experience. You'll review the basics of object-oriented programming, understand functional programming, apply your knowledge to database work, and much more. From the basic to the advanced, this guide walks you through everything you need to know to confidently take the OCP 1Z0-809 Exam and upgrade exams 1Z0-810 and 1Z0-813. Java 8 represents the biggest changes to the language to date, and the latest exam now requires that you demonstrate functional programming competence in order to pass. This guide has you covered, with clear explanations and expert advice. * Understand abstract classes, interfaces, and class design * Learn object-oriented design principles and patterns * Delve into functional programming, advanced strings, and localization * Master IO, NIO, and JDBC with expert-led database practice If you're ready to take the next step in your IT career, OCP: Oracle Certified Professional Java SE 8 Programmer II Study Guide is your ideal companion on the road to certification.
Jeanne Boyarsky, OCA/OCP 8, has worked as a Java developer for a bank in NYC for 13 years where she develops, mentors and conducts training. In her free time, she is a senior moderator at CodeRanch and works on the forum code base. Scott Selikoff, OCA/OCP 8, has been a professional Java Enterprise developer for over 15 years. He currently operates Selikoff Solutions, LLC, which provides software consulting services to businesses in the tri-state New York City area.
Inhaltsangabe
Introduction xix
Assessment Test xxxviii
Chapter 1 Advanced Class Design 1
Reviewing OCA Concepts 2
Access Modifiers 2
Overloading and Overriding 4
Abstract Classes 5
Static and Final 6
Imports 6
Using instanceof 7
Understanding Virtual Method Invocation 9
Annotating Overridden Methods 11
Coding equals, hashCode, and toString 13
toString 13
equals 15
hashCode 18
Working with Enums 20
Using Enums in Switch Statements 21
Adding Constructors, Fields, and Methods 22
Creating Nested Classes 24
Member Inner Classes 25
Local Inner Classes 27
Anonymous Inner Classes 29
Static Nested Classes 31
Summary 33
Exam Essentials 34
Review Questions 36
Chapter 2 Design Patterns and Principles 47
Designing an Interface 48
Purpose of an Interface 51
Introducing Functional Programming 52
Defining a Functional Interface 53
Implementing Functional Interfaces with Lambdas 55
Applying the Predicate Interface 60
Implementing Polymorphism 61
Distinguishing between an Object and a Reference 63