OCP: Oracle Certified Professional Java SE 8 Programmer II - Study Guide: Wxam 1ZI-809

Informationen zum Autor 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. Klappentext Complete, trusted preparation for the Java Programmer II examOCP: 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 practiceIf 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. Zusammenfassung 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. Inhaltsverzeichnis Introduction xix Assessment Test xxxviii Chapter 1 Advanced Class Design 1 Reviewing OCA Concepts 2 Using instanceof 7 Understanding Virtual Method Invocation 9 Annotating Overridden Methods 11 Coding equals, hashCode, and toString 13 Working with Enums 20 Creating Nested Classes 24 Summary 33 Exam Essentials 34 Review Questions 36 Chapter 2 Design Patterns and Principles 47 Designing an Interface 48 Introducing Functional Programming 52 Implementing Polymorphism 61 Understanding Design Principles 66 Working with Design Patterns 75 Summary 93 Exam Essentials 93 Review Questions 95 Chapter 3 Generics and Collections 103 Reviewing OCA Collections 104 Working with Generics 108 Using Lists, Sets, Maps, and Queues 124 Comparator vs. Comparable 143 Searching and Sorting 150 Additions in Java 8 152 Summary 159 Exam Essentials 161 Review Questions 162 Chapter 4 Functional Programming 171 Using Variables in Lambdas 172 Working with Built-In Functional Interfaces 173 Returning an Optional 182 Using Streams 185 Working with Primitives 205 Working with Advanced Stream Pipeline Concepts 213 Summary 223 Exam Essentials 224 Review Questions 226 Chapter 5 Dates, Strings, and Localization 233 Working with Dates and Time...

List of contents

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
 
Casting Object References 64
 
Understanding Design Principles 66
 
Encapsulating Data 66
 
Creating JavaBeans 69
 
Applying the Is?]a Relationship 71
 
Applying the Has?]a Relationship 73
 
Composing Objects 74
 
Working with Design Patterns 75
 
Applying the Singleton Pattern 76
 
Creating Immutable Objects 82
 
Using the Builder Pattern 86
 
Creating Objects with the Factory Pattern 89
 
Summary 93
 
Exam Essentials 93
 
Review Questions 95
 
Chapter 3 Generics and Collections 103
 
Reviewing OCA Collections 104
 
Array and ArrayList 104
 
Searching and Sorting 105
 
Wrapper Classes and Autoboxing 106
 
The Diamond Operator 107
 
Working with Generics 108
 
Generic Classes 109
 
Generic Interfaces 112
 
Generic Methods 114
 
Interacting with Legacy Code 114
 
Bounds 117
 
Putting It All Together 122
 
Using Lists, Sets, Maps, and Queues 124
 
Common Collections Methods 125
 
Using the List Interface 127
 
Using the Set Interface 132
 
Using the Queue Interface 134
 
Map 138
 
Comparing Collection Types 140
 
Comparator vs. Comparable 143
 
Comparable 143
 
Comparator 146
 
Searching and Sorting 150
 
Additions in Java 8 152
 
Using Method References 152
 
Removing Conditionally 154
 
Updating All Elements 155
 
Looping through a Collection 155
 
Using New Java 8 Map APIs 155
 
Summary 159
 
Exam Essentials 161
 
Review Questions 162
 
Chapter 4 Functional Programming 171
 
Using Variables in Lambdas 172
 
Working with Built-In Functional Interfaces 173
 
Implementing Supplier 174
 
Implementing Consumer and BiConsumer 175
 
Implementing Predicate and BiPredicate 177
 
Implementing Function and BiFunction 178
 
Implementing UnaryOperator and BinaryOperator 180
 
Checking Functional Interfaces 181
 
Returning an Optional 182
 
Using Streams 185
 
Creating Stream Sources 188
 
Using Common Terminal Operations 189
 
Using Common Intermediate Operati

Product details

• Authors: J Boyarsky, Jeann Boyarsky, Jeanne Boyarsky, Jeanne Selikoff Boyarsky, Boyarsky Jeanne, Scott Selikoff, Selikoff Scott
• Publisher: Wiley, John and Sons Ltd
• Languages: English
• Product format: Paperback / Softback
• Released: 30.06.2015
• EAN: 9781119067900
• ISBN: 978-1-119-06790-0
• No. of pages: 696
• Dimensions: 188 mm x 234 mm x 36 mm
• Subjects: Natural sciences, medicine, IT, technology > IT, data processing > Programming languages; Informatik, Prüfungsvorbereitung, Programmierung, Zertifizierung, computer science, test prep, Java (Programmiersprache), Programmierung u. Software-Entwicklung, Programming & Software Development, Zertifizierung f. MSCE u. Novell, Certification (MSCE, Novell, etc.), Objektorientiertes Programmieren / Java, Object Technologies - Java