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BOOK OCA - ORACLE CERTIFIED ASSOCIATE JAVA STUDY GUIDE EXAM 1Z0-808
SUMMARY
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Items Found: 201
- 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
- Creating an Array with Reference Variables 121
- Using an Array 123
- Sorting 124
- Searching 125
- Varargs 126
- Multidimensional Arrays 126
- Understanding an ArrayList 129
- Creating an ArrayList 129
- Using an ArrayList 130
- Wrapper Classes 134
- Autoboxing 136
- Converting Between array and List 136
- Sorting 138
- Working with Dates and Times 138
- Creating Dates and Times 138
- Manipulating Dates and Times 142
- Working with Periods 145
- Formatting Dates and Times 148
- Parsing Dates and Times 151
- Summary 151
- Exam Essentials 152
- Review Questions 153
- Chapter 4 Methods and Encapsulation 165
- Designing Methods 166
- Optional Specifiers 168
- Return Type 169
- Method Name 170
- Parameter List 171
- Optional Exception List 171
- Method Body 171
- Working with Varargs 172
- Applying Access Modifiers 173
- Private Access 173
- Default (Package Private) Access 175
- Protected Access 176
- Public Access 180
- Designing Static Methods and Fields 181
- Calling a Static Variable or Method 182
- Static vs. Instance 183
- Static Variables 185
- Static Initialization 186
- Static Imports 187
- Passing Data Among Methods 188
- Overloading Methods 191
- Creating Constructors 196
- Default Constructor 197
- Overloading Constructors 199
- Final Fields 202
- Order of Initialization 202
- Encapsulating Data 205
- Creating Immutable Classes 207
- Writing Simple Lambdas 208
- Lambda Example 209
- Lambda Syntax 211
- Predicates 214
- Summary 215
- Exam Essentials 216
- Review Questions 218
- Chapter 5 Class Design 233
- Introducing Class Inheritance 234
- Extending a Class 235
- Applying Class Access Modifiers 237
- Creating Java Objects 237
- Defining Constructors 238
- Calling Inherited Class Members 244
- Inheriting Methods 246
- Inheriting Variables 257
- Creating Abstract Classes 259
- Defining an Abstract Class 260
- Creating a Concrete Class 262
- Extending an Abstract Class 263
- Implementing Interfaces 266
- Defining an Interface 267
- Inheriting an Interface 269
- Interface Variables 273
- Default Interface Methods 274
- Static Interface Methods 278
- Understanding Polymorphism 279
- Object vs. Reference 281
- Casting Objects 282
- Virtual Methods 284
- Polymorphic Parameters 285
- Polymorphism and Method Overriding 287
- Summary 288
- Exam Essentials 289
- Review Questions 291
- Chapter 6 Exceptions 299
- Understanding Exceptions 300
- The Role of Exceptions 300
- Understanding Exception Types 302
- Throwing an Exception 304
- Using a try Statement 305
- Adding a finally Block 307
- Catching Various Types of Exceptions 309
- Throwing a Second Exception 311
- Recognizing Common Exception Types 313
- Runtime Exceptions 314
- Checked Exceptions 317
- Errors 317
- Calling Methods That Throw Exceptions 318
- Subclasses 319
- Printing an Exception 321
- Summary 323
- Exam Essentials 324
- Review Questions 325
- Appendix A Answers to Review Questions 333
- Chapter 1: Java Building Blocks 334
- Chapter 2: Operators and Statements 336
- Chapter 3: Core Java APIs 339
- Chapter 4: Methods and Encapsulation 342
- Chapter 5: Class Design 346
- Chapter 6: Exceptions 349
- Appendix B Study Tips 353
- Studying for the Test 354
- Creating a Study Plan 354
- Creating and Running Sample Applications 355
- Taking the Test 359
- Understanding the Question 359
- Applying Process of Elimination 362
- Optimizing Your Time 364
- Getting a Good Night’s Rest 366
