OCP Oracle Certified Professional Java SE 11 Programmer I Study Guide: Exam 1Z0-815 (True PDF)

✍ Scribed by Jeanne Boyarsky, Scott Selikoff

• Publisher: Sybex
• Year: 2019
• Tongue: English
• Leaves: 602
• Edition: 1
• Category: Library

✦ Synopsis

True PDF. The comprehensive study aide for those preparing for the new Oracle Certified Professional Java SE Programmer I exam--fully updated for the latest update of Exam 1Z0-815. Use with authors' other study for successfully passing Exam 1Z0-819.

Used primarily in mobile and desktop application development, Java is a platform-independent, object-oriented programming language. It is the principal language used in Android application development as well as a popular language for client-side cloud applications. Oracle has updated its Java Programmer certification tracks for Oracle Certified Professional. 

The OCP Oracle Certified Professional Java SE 11 Programmer I Study Guide covers 100% of exam objectives, ensuring that you are thoroughly prepared for this challenging certification exam. This comprehensive, in-depth study guide helps you develop the functional-programming knowledge required to pass the exam and earn certification. All vital topics are covered, including Java building blocks, operators and loops, String and StringBuilder, Array and ArrayList, and more. Included is access to Sybex's superior online interactive learning environment and test bank--containing self-assessment tests, chapter tests, bonus practice exam questions, electronic flashcards, and a searchable glossary of important terms. This indispensable guide:

• Covers core topics for Exam 1Z0-819
• Clarifies complex material and strengthens your comprehension and retention of key topics
• Covers all exam objectives such as methods and encapsulation, exceptions, inheriting abstract classes and interfaces, Modules, and Lambda Expressions
• Explains object-oriented design principles and patterns
• Helps you master the fundamentals of functional programming
• Enables you to create Java solutions applicable to real-world scenarios

There are over 9 millions developers using Java around the world, yet hiring managers face challenges filling open positions with qualified candidates. The OCP Oracle Certified Professional Java SE 11 Programmer I Study Guide will help you take the next step in your career.

✦ Table of Contents

OCP Oracle Certified Professional Java SE 11 Programmer I: Study Guide
Acknowledgments
About the Authors
Contents at a Glance
Contents
Introduction
Taking the Assessment Test
The Assessment Test
Answers to Assessment Test
Chapter 1 Welcome to Java
Learning About the Java Environment
Major Components of Java
Downloading a JDK
Identifying Benefits of Java
Understanding the Java Class Structure
Fields and Methods
Comments
Classes vs. Files
Writing a main() Method
Creating a main() Method
Passing Parameters to a Java Program
Running a Program in One Line
Understanding Package Declarations and Imports
Wildcards
Redundant Imports
Naming Conflicts
Creating a New Package
Compiling and Running Code with Packages
Using an Alternate Directory
Compiling with JAR Files
Creating a JAR File
Running a Program in One Line with Packages
Ordering Elements in a Class
Code Formatting on the Exam
Summary
Exam Essentials
Review Questions
Chapter 2 Java Building Blocks
Creating Objects
Calling Constructors
Reading and Writing Member Fields
Executing Instance Initializer Blocks
Following Order of Initialization
Understanding Data Types
Using Primitive Types
Using Reference Types
Distinguishing between Primitives and Reference Types
Declaring Variables
Identifying Identifiers
Declaring Multiple Variables
Initializing Variables
Creating Local Variables
Passing Constructor and Method Parameters
Defining Instance and Class Variables
Introducing var
Managing Variable Scope
Limiting Scope
Nesting Scope
Tracing Scope
Applying Scope to Classes
Reviewing Scope
Destroying Objects
Understanding Garbage Collection
Tracing Eligibility
Summary
Exam Essentials
Review Questions
Chapter 3 Operators
Understanding Java Operators
Types of Operators
Operator Precedence
Applying Unary Operators
Logical Complement and Negation Operators
Increment and Decrement Operators
Working with Binary Arithmetic Operators
Arithmetic Operators
Numeric Promotion
Assigning Values
Assignment Operator
Casting Values
Compound Assignment Operators
Assignment Operator Return Value
Comparing Values
Equality Operators
Relational Operators
Logical Operators
Short-Circuit Operators
Making Decisions with the Ternary Operator
Summary
Exam Essentials
Review Questions
Chapter 4 Making Decisions
Creating Decision-Making Statements
Statements and Blocks
The if Statement
The else Statement
The switch Statement
Writing while Loops
The while Statement
The do/while Statement
Comparing while and do/while Loops
Infinite Loops
Constructing for Loops
The for Loop
The for-each Loop
Controlling Flow with Branching
Nested Loops
Adding Optional Labels
The break Statement
The continue Statement
The return Statement
Unreachable Code
Reviewing Branching
Summary
Exam Essentials
Review Questions
Chapter 5 Core Java APIs
Creating and Manipulating Strings
Concatenation
Immutability
Important String Methods
Method Chaining
Using the StringBuilder Class
Mutability and Chaining
Creating a StringBuilder
Important StringBuilder Methods
Understanding Equality
Comparing equals() and ==
The String Pool
Understanding Java Arrays
Creating an Array of Primitives
Creating an Array with Reference Variables
Using an Array
Sorting
Searching
Comparing
Varargs
Multidimensional Arrays
Understanding an ArrayList
Creating an ArrayList
Using an ArrayList
Wrapper Classes
Autoboxing and Unboxing
Converting Between array and List
Using Varargs to Create a List
Sorting
Creating Sets and Maps
Introducing Sets
Introducing Maps
Calculating with Math APIs
min() and max()
round()
pow()
random()
Summary
Exam Essentials
Review Questions
Chapter 6 Lambdas and Functional Interfaces
Writing Simple Lambdas
Lambda Example
Lambda Syntax
Introducing Functional Interfaces
Predicate
Consumer
Supplier
Comparator
Working with Variables in Lambdas
Parameter List
Local Variables inside the Lambda Body
Variables Referenced from the Lambda Body
Calling APIs with Lambdas
removeIf()
sort()
forEach()
Summary
Exam Essentials
Review Questions
Chapter 7 Methods and Encapsulation
Designing Methods
Access Modifiers
Optional Specifiers
Return Type
Method Name
Parameter List
Optional Exception List
Method Body
Working with Varargs
Applying Access Modifiers
Private Access
Default (Package-Private) Access
Protected Access
Public Access
Applying the static Keyword
Designing static Methods and Fields
Accessing a static Variable or Method
Static vs. Instance
static Variables
Static Initialization
Static Imports
Passing Data among Methods
Overloading Methods
Varargs
Autoboxing
Reference Types
Primitives
Generics
Arrays
Putting It All Together
Encapsulating Data
Summary
Exam Essentials
Review Questions
Chapter 8 Class Design
Understanding Inheritance
Single vs. Multiple Inheritance
Inheriting Object
Creating Classes
Extending a Class
Applying Class Access Modifiers
Accessing the this Reference
Calling the super Reference
Declaring Constructors
Creating a Constructor
Default Constructor
Calling Overloaded Constructors with this()
Calling Parent Constructors with super()
Constructors and final Fields
Order of Initialization
Reviewing Constructor Rules
Inheriting Members
Calling Inherited Members
Inheriting Methods
Hiding Variables
Understanding Polymorphism
Object vs. Reference
Casting Objects
The instanceof Operator
Polymorphism and Method Overriding
Overriding vs. Hiding Members
Summary
Exam Essentials
Review Questions
Chapter 9 Advanced Class Design
Creating Abstract Classes
Introducing Abstract Classes
Defining Abstract Methods
Creating a Concrete Class
Reviewing Abstract Class Rules
Implementing Interfaces
Defining an Interface
Inserting Implicit Modifiers
Inheriting an Interface
Polymorphism and Interfaces
Reviewing Interface Rules
Introducing Inner Classes
Defining a Member Inner Class
Using a Member Inner Class
Summary
Exam Essentials
Review Questions
Chapter 10 Exceptions
Understanding Exceptions
The Role of Exceptions
Understanding Exception Types
Throwing an Exception
Recognizing Exception Classes
RuntimeException Classes
Checked Exception Classes
Error Classes
Handling Exceptions
Using try and catch Statements
Chaining catch Blocks
Applying a Multi-catch Block
Adding a finally Block
Finally Closing Resources
Throwing Additional Exceptions
Calling Methods That Throw Exceptions
Declaring and Overriding Methods with Exceptions
Printing an Exception
Summary
Exam Essentials
Review Questions
Chapter 11 Modules
Introducing Modules
Exploring a Module
Benefits of Modules
Creating and Running a Modular Program
Creating the Files
Compiling Our First Module
Running Our First Module
Packaging Our First Module
Updating Our Example for Multiple Modules
Updating the Feeding Module
Creating a Care Module
Creating the Talks Module
Creating the Staff Module
Diving into the module-info File
exports
requires transitive
provides, uses, and opens
Discovering Modules
The java Command
The jar Command
The jdeps Command
The jmod Command
Reviewing Command-Line Options
Summary
Exam Essentials
Review Questions
Appendix Answers to Review Questions
Chapter 1: Welcome to Java
Chapter 2: Java Building Blocks
Chapter 3: Operators
Chapter 4: Making Decisions
Chapter 5: Core Java APIs
Chapter 6: Lambdas and Functional Interfaces
Chapter 7: Methods and Encapsulation
Chapter 8: Class Design
Chapter 9: Advanced Class Design
Chapter 10: Exceptions
Chapter 11: Modules
Index
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