Oca – Oracle Certified Associate Java Se 8 Er I Study Guide: Exam 1z0–808

By (author) Boyarsky, J
Short description/annotation
Full coverage of functional programming and all OCA Java Programmer exam objectives OCA, Oracle Certified Associate Java SE 8 Programmer I Study Guide, Exam 1Z0-808 is a comprehensive study guide for those taking the Oracle Certified Associate Java SE 8 Programmer I exam (1Z0-808).
Description
Full coverage of functional programming and all OCA Java Programmer exam objectives OCA, Oracle Certified Associate Java SE 8 Programmer I Study Guide, Exam 1Z0-808 is a comprehensive study guide for those taking the Oracle Certified Associate Java SE 8 Programmer I exam (1Z0-808). With complete coverage of 100% of the exam objectives, this book provides everything you need to know to confidently take the exam. The release of Java 8 brought the language''s biggest changes to date, and for the first time, candidates are required to learn functional programming to pass the exam. This study guide has you covered, with thorough functional programming explanation and information on all key topic areas Java programmers need to know. You''ll cover Java inside and out, and learn how to apply it efficiently and effectively to create solutions applicable to real-world scenarios. * Work confidently with operators, conditionals, and loops * Understand object-oriented design principles and patterns * Master functional programming fundamentals
Table of contents
Introduction xxi Assessment Test xxxi Chapter 1 Java Building Blocks 1 Understanding the Java Class Structure 2 Fields and Methods 2 Comments 4 Classes vs. Files 5 Writing a main() Method 6 Understanding Package Declarations and Imports 9 Wildcards 10 Redundant Imports 11 Naming Conflicts 12 Creating a New Package 13 Code Formatting on the Exam 16 Creating Objects 16 Constructors 17 Reading and Writing Object Fields 18 Instance Initializer Blocks 18 Order of Initialization 19 Distinguishing Between Object References and Primitives 20 Primitive Types 20 Reference Types 24 Key Differences 25 Declaring and Initializing Variables 25 Declaring Multiple Variables 26 Identifiers 27 Understanding Default Initialization of Variables 29 Local Variables 29 Instance and Class Variables 30 Understanding Variable Scope 31 Ordering Elements in a Class 34 Destroying Objects 36 Garbage Collection 36 finalize() 38 Benefits of Java 39 Summary 40 Exam Essentials 41 Review Questions 42 Chapter 2 Operators and Statements 51 Understanding Java Operators 52 Working with Binary Arithmetic Operators 53 Arithmetic Operators 53 Numeric Promotion 55 Working with Unary Operators 57 Logical Complement and Negation Operators 57 Increment and Decrement Operators 58 Using Additional Binary Operators 60 Assignment Operators 60 Compound Assignment Operators 62 Relational Operators 63 Logical Operators 64 Equality Operators 65 Understanding Java Statements 66 The if-then Statement 67 The if-then-else Statement 68 The switch Statement 72 The while Statement 76 The do-while Statement 78 The for Statement 80 Understanding Advanced Flow Control 86 Nested Loops 87 Adding Optional Labels 87 The break Statement 88 The continue Statement 90 Summary 92 Exam Essentials 92 Review Questions 94 Chapter 3 Core Java APIs 101 Creating and Manipulating Strings 102 Concatenation 102 Immutability 104 The String Pool 105 Important String Methods 105 Method Chaining 110 Using the StringBuilder Class 111 Mutability and Chaining 112 Creating a StringBuilder 113 Important StringBuilder Methods 114 StringBuilder vs. StringBuffer 117 Understanding Equality 117 Understanding Java Arrays 119 Creating an Array of Primitives 119 Creatin