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

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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 1Z0-819Clarifies 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. 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 Advert EULA