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by Bert Bates, Kathy Sierra
SCJP Sun Certified Programmer for Java 6 Study Guide
Cover Page
SCJP Sun® Certified Programmer for Java™ 6 Study Guide (Exam 310-065)
Copyright Page
CD Content
Contents
Contributors
Acknowledgments
Preface
Introduction
1 Declarations and Access Control
Java Refresher
Identifiers & JavaBeans (Objectives 1.3 and 1.4)
Legal Identifiers
Sun's Java Code Conventions
JavaBeans Standards
Declare Classes (Exam Objective 1.1)
Source File Declaration Rules
Class Declarations and Modifiers
Exercise 1-1: Creating an Abstract Superclass and Concrete Subclass
Declare Interfaces (Exam Objectives 1.1 and 1.2)
Declaring an Interface
Declaring Interface Constants
Declare Class Members (Objectives 1.3 and 1.4)
Access Modifiers
Nonaccess Member Modifiers
Constructor Declarations
Variable Declarations
Declaring Enums
Two-Minute Drill
Q&A Self Test
Self Test Answers
2 object orientation
Encapsulation (Exam Objective 5.1)
Inheritance, Is-A, Has-A (Exam Objective 5.5)
IS-A
HAS-A
Polymorphism (Exam Objective 5.2)
Overriding / Overloading (Exam Objectives 1.5 and 5.4)
Overridden Methods
Overloaded Methods
Reference Variable Casting (Objective 5.2)
Implementing an Interface (Exam Objective 1.2)
Legal Return Types (Exam Objective 1.5)
Return Type Declarations
Returning a Value
Constructors and Instantiation (Exam Objectives 1.6, 5.3, and 5.4)
Determine Whether a Default Constructor Will Be Created
Overloaded Constructors
Statics (Exam Objective 1.3)
Static Variables and Methods
Coupling and Cohesion (Exam Objective 5.1)
Two-Minute Drill
Q&A Self Test
Self Test Answers
3 Assignments
Stack and Heap—Quick Review
Literals, Assignments, and Variables (Exam Objectives 1.3 and 7.6)
Literal Values for All Primitive Types
Assignment Operators
Exercise 3-1: Casting Primitives
Using a Variable or Array Element That Is Uninitialized and Unassigned
Local (Stack, Automatic) Primitives and Objects
Passing Variables into Methods (Objective 7.3)
Passing Object Reference Variables
Does Java Use Pass-By-Value Semantics?
Passing Primitive Variables
Array Declaration, Construction, and Initialization (Exam Objective 1.3)
Declaring an Array
Constructing an Array
Initializing an Array
Initialization Blocks
Using Wrapper Classes and Boxing (Exam Objective 3.1)
An Overview of the Wrapper Classes
Creating Wrapper Objects
Using Wrapper Conversion Utilities
Autoboxing
Overloading (Exam Objectives 1.5 and 5.4)
Garbage Collection (Exam Objective 7.4)
Overview of Memory Management and Garbage Collection
Overview of Java's Garbage Collector
Writing Code That Explicitly Makes Objects Eligible for Collection
Exercise 3-2: Garbage Collection Experiment
Two-Minute Drill
Q&A Self Test
Self Test Answers
4 operators
Java Operators (Exam Objective 7.6)
Assignment Operators
Relational Operators
instanceof Comparison
Arithmetic Operators
Conditional Operator
Logical Operators
Two-Minute Drill
Q&A Self Test
Self Test Answers
5 Flow Control, exceptions, and Assertions
if and switch Statements (Exam Objective 2.1)
if-else Branching
switch Statements
Exercise 5-1: Creating a switch-case Statement
Loops and Iterators (Exam Objective 2.2)
Using while Loops
Using do Loops
Using for Loops
Using break and continue
Unlabeled Statements
Labeled Statements
Exercise 5-2: Creating a Labeled while Loop
Handling Exceptions (Exam Objectives 2.4 and 2.5)
Catching an Exception Using try and catch
Using finally
Propagating Uncaught Exceptions
Exercise 5-3: Propagating and Catching an Exception
Defining Exceptions
Exception Hierarchy
Handling an Entire Class Hierarchy of Exceptions
Exception Matching
Exception Declaration and the Public Interface
Rethrowing the Same Exception
Exercise 5-4: Creating an Exception
Common Exceptions and Errors (Exam Objective 2.6)
Working with the Assertion Mechanism (Exam Objective 2.3)
Assertions Overview
Enabling Assertions
Using Assertions Appropriately
Two-Minute Drill
Q&A Self Test
Self Test Answers
6 Strings, I/O, Formatting, and Parsing
String, StringBuilder, and StringBuffer (Exam Objective 3.1)
The String Class
Important Facts About Strings and Memory
Important Methods in the String Class
The StringBuffer and StringBuilder Classes
Important Methods in the StringBuffer and StringBuilder Classes
File Navigation and I/O (Exam Objective 3.2)
The java.io.Console Class
Serialization (Exam Objective 3.3)
Dates, Numbers, and Currency (Exam Objective 3.4)
Working with Dates, Numbers, and Currencies
Parsing, Tokenizing, and Formatting (Exam Objective 3.5)
A Search Tutorial
Locating Data via Pattern Matching
Tokenizing
Formatting with printf() and format()
Two-Minute Drill
Q&A Self Test
Self Test Answers
7 Generics and Collections
Overriding hashCode() and equals() (Objective 6.2)
Overriding equals()
Overriding hashCode()
Collections (Exam Objective 6.1)
So What Do You Do with a Collection?
List Interface
Set Interface
Map Interface
Queue Interface
Using the Collections Framework (Objectives 6.3 and 6.5)
ArrayList Basics
Autoboxing with Collections
Sorting Collections and Arrays
Navigating (Searching) TreeSets and TreeMaps
Other Navigation Methods
Backed Collections
Generic Types (Objectives 6.3 and 6.4)
Generics and Legacy Code
Mixing Generic and Non-generic Collections
Polymorphism and Generics
Generic Methods
Generic Declarations
Two-Minute Drill
Q&A Self Test
Self Test Answers
8 Inner Classes
Inner Classes
Coding a "Regular" Inner Class
Referencing the Inner or Outer Instance from Within the Inner Class
Method-Local Inner Classes
What a Method-Local Inner Object Can and Can't Do
Anonymous Inner Classes
Plain-Old Anonymous Inner Classes, Flavor One
Plain-Old Anonymous Inner Classes, Flavor Two
Argument-Defined Anonymous Inner Classes
Static Nested Classes
Instantiating and Using Static Nested Classes
Two-Minute Drill
Q&A Self Test
Self Test Answers
9 Threads
Defining, Instantiating, and Starting Threads (Objective 4.1)
Defining a Thread
Instantiating a Thread
Starting a Thread
Thread States and Transitions (Objective 4.2)
Thread States
Preventing Thread Execution
Sleeping
Exercise 9-1: Creating a Thread and Putting It to Sleep
Thread Priorities and yield( )
Synchronizing Code (Objective 4.3)
Synchronization and Locks
Exercise 9-2: Synchronizing a Block of Code
Thread Deadlock
Thread Interaction (Objective 4.4)
Using notifyAll( ) When Many Threads May Be Waiting
Two-Minute Drill
Q&A Self Test
Self Test Answers
Exercise Answers
10 Development
Using the javac and java Commands (Exam Objectives 7.1, 7.2, and 7.5)
Compiling with javac
Launching Applications with java
Searching for Other Classes
JAR Files (Objective 7.5)
JAR Files and Searching
Using Static Imports (Exam Objective 7.1)
Static Imports
Two-Minute Drill
Q&A Self Test
Self Test Answers
A About the Download
Steps to Download MasterExam
System Requirements
MasterExam
Additional Chapters
Help
Removing Installation
Technical Support
LearnKey Technical Support
Index
For Download
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SCJP Sun® Certified Programmer for Java™ 6 Study Guide (Exam 310-065)
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