In the OCP Oracle Certified Professional Java SE 17 Developer Study Guide: Exam 1Z0-829, you'll find accessible and essential test prep material for the in-demand and practical OCP Java SE 17 Developer certification. Providing comprehensive coverage of all OCP Java SE 17 exam objectives and competencies, the Study Guide offers you access to all the skills and knowledge you'll need to succeed on the test and in the field as a new or experienced Java developer.

This book provides material on records, sealed classes, text blocks, dates, streams, controlling program flow, using the Java object-oriented approach, handling exceptions, working with arrays and collections, and more. You'll also get:

Intuitively organized information that aligns with the competencies tested on the exam and those required by real-world Java developers
Opportunities to practice and develop skills that remain in high demand in the IT industry
Access to the Sybex online learning center, with chapter review questions, full-length practice exams, hundreds of electronic flashcards, and a glossary of key terms

Perfect for anyone prepping for the brand-new OCP Java SE 17 credential, OCP Oracle Certified Professional Java SE 17 Developer Study Guide: Exam 1Z0-829 is also a can't-miss reference for practicing and aspiring Java developers seeking to learn or reinforce their foundational skills in Java programming and improve their performance on the job.

Auteur
ABOUT THE AUTHORS Scott Selikoff has been a professional Java Enterprise architect for over 20 years. He currently works as a Staff Software Engineer at Google, specializing in Architecture and Cloud Services. He is a Leader of the Garden State Java User Group, helping to facilitate discussions and exchange of ideas within the community. Jeanne Boyarsky is a Java Champion and has worked as a Java developer for a major bank for more than 20 years. She is a senior moderator at CodeRanch, and trains and mentors students of all levels, including the programming department of a FIRST robotics team.

Contenu
Introduction xxiii Assessment Test xlv Chapter 1 Building Blocks 1 Learning about the Environment 2 Major Components of Java 2 Downloading a JDK 3 Understanding the Class Structure 4 Fields and Methods 4 Comments 5 Classes and Source Files 7 Writing a main() Method 8 Creating a main() Method 8 Passing Parameters to a Java Program 9 Understanding Package Declarations and Imports 11 Packages 12 Wildcards 13 Redundant Imports 13 Naming Conflicts 15 Creating a New Package 16 Compiling and Running Code with Packages 16 Compiling to Another Directory 18 Compiling with JAR Files 20 Creating a JAR File 20 Ordering Elements in a Class 21 Creating Objects 23 Calling Constructors 23 Reading and Writing Member Fields 24 Executing Instance Initializer Blocks 24 Following the Order of Initialization 25 Understanding Data Types 26 Using Primitive Types 27 Using Reference Types 29 Distinguishing between Primitives and Reference Types 30 Creating Wrapper Classes 31 Defining Text Blocks 32 Declaring Variables 34 Identifying Identifiers 35 Declaring Multiple Variables 36 Initializing Variables 38 Creating Local Variables 38 Passing Constructor and Method Parameters 40 Defining Instance and Class Variables 41 Inferring the Type with var 41 Managing Variable Scope 45 Limiting Scope 45 Tracing Scope 46 Applying Scope to Classes 47 Reviewing Scope 48 Destroying Objects 48 Understanding Garbage Collection 48 Tracing Eligibility 49 Summary 51 Exam Essentials 52 Review Questions 54 Chapter 2 Operators 65 Understanding Java Operators 66 Types of Operators 66 Operator Precedence 67 Applying Unary Operators 69 Complement and Negation Operators 70 Increment and Decrement Operators 71 Working with Binary Arithmetic Operators 72 Arithmetic Operators 72 Numeric Promotion 75 Assigning Values 77 Assignment Operator 77 Casting Values 77 Compound Assignment Operators 81 Return Value of Assignment Operators 82 Comparing Values 83 Equality Operators 83 Relational Operators 84 Logical Operators 87 Conditional Operators 88 Making Decisions with the Ternary Operator 90 Summary 92 Exam Essentials 92 Review Questions 94 Chapter 3 Making Decisions 101 Creating Decision- Making Statements 102 Statements and Blocks 102 The if Statement 103 The else Statement 104 Shortening Code with Pattern Matching 106 Applying switch Statements 110 The switch Statement 110 The switch Expression 115 Writing while Loops 121 The while Statement 121 The do/while Statement 123 Infinite Loops 123 Constructing for Loops 124 The for Loop 124 The for- each Loop 129 Controlling Flow with Branching 131 Nested Loops 131 Adding Optional Labels 132 The break Statement 133 The continue Statement 135 The return Statement 137 Unreachable Code 138 Reviewing Branching 139 Summary 139 Exam Essentials 140 Review Questions 142 Chapter 4 Core APIs 155 Creating and Manipulating Strings 156 Concatenating 157 Important String Methods 158 Method Chaining 169 Using the StringBuilder Class 170 Mutability and Chaining 171 Creating a StringBuilder 172 Important StringBuilder Methods 172 Understanding Equality 175 Comparing equals() and == 175 The String Pool 176 Understanding Arrays 178 Creating an Array of Primitives 179 Creating an Array with Reference Variables 180 Using an Array 182 Sorting 183 Searching 184 Comparing 185 Using Methods with Varargs 187 Working with Multidimensional Arrays 188 Calculating with Math APIs 190 Finding the Minimum and Maximum 190 Rounding Numbers 191 Determining the Ceiling and Floor 191 Calculating Exponents 192 Generating Random Numbers 192 Working with Dates and Times 192 Creating Dates and Times 193 Manipulating Dates and Times 197 Working with Periods 199 Working with Durations 202 Period vs. Duration 204 Working with Instants 205 Accounting for Daylight Saving Time 206 Summary 208 Exam Essentials 209 Review Questions 210 Chapter 5 Methods 219 Designing Methods 220 Access Modifiers 221 Optional Specifiers 222 Return Type 224 Method Name 226 Parameter List 226 Method Signature 227 Exception List 227 Method Body 228 Declaring Local and Instance Variables 228 Local Variable Modifiers 229 Effectively Final Variables 230 Instance Variable Modifiers 231 Working with Varargs 232 Creating Methods with Varargs 232 Calling Methods with Varargs 233 Accessing Elements of a Vararg 234 Using Varargs with Other Method Parameters 234 Applying Access Modifiers 235 Private Access 235 Package Access 236 Protected Access 237 Public Access 242 Reviewing Access Modifiers 242 Accessing static Data 243 Designing static Methods and Variables 243 Accessing a static Variable or Method 244 Class vs. Instance Membership 245 Static Variable Modifiers 248 Static Initializers 250 Static Imports 251 Passing Data among Methods 253 Passing Objects 253 Returning Objects 255 Autoboxing and Unboxing Variables 256 Overloading Methods 258 Reference Types 259 Primitives 260 Autoboxing 261 Arrays 261 Varargs 261 Putting It All Together 262 Summary 263 Exam Essentials 264 Review Questions 265 Chapter 6 Class Design 275 Understanding Inheritance 276 Declaring a Subclass 276 Class Modifiers 278 Single vs. Multiple Inheritance 279 Inheriting Object 279 Creating Classes 281 Extending a Class 281 Applying Class Access Modifiers 282 Accessing the this Reference 283 Calling the super Reference 284 Declaring Constructors 286 Creating a Constructor 286 The Default Constructor 287 Calling Overloaded Constructors with this() 289 Calling Parent Constructors with super() 292 Initializing Objects 297 Initializing Classes 297 Initializing final Fields 298 Initializing Instances 300 Inheriting Members 304 Overriding a Method 305 Redeclaring private Methods 311 Hiding Static Methods 311 Hiding Variables 313 Writing final Methods 314 Creating Abstract Classes 315 Introducing Abstrac…