Résumé
Detailed yet accessible, Java™ Rules is
a comprehensive reference for the application programmer
who needs to master the intricacies of the Java™
programming language. Thoroughly describing the core of the
Java programming language and the Java™ virtual
machine (JVM™), Java™ Rules makes it possible
for programmers to efficiently master the Java
platform.
2. Compilation Units.
3. The “static” Modifier, “this,” and “super” .
4. Primitive Data Types and Object.
5. Strings and Other Common Data Types.
6. Arrays and The Collections Framework.
Index.
Based on the second editions of The Java™ Language Specification and The Java™ Virtual Machine Specification, Java™ Rules presents a subset of those specifications in a gentle tutorial style. From platform basics to APIs, this encyclopedic guidebook reveals every facet of the language—including previously undocumented features. Throughout the book, practical tutorials are supported with official language documentation or with insights shared by respected leaders. The book's unique format and conversational style are ideally suited for experienced programmers seeking a short path to language proficiency.
As both a tutorial and detailed reference, this volume of Java™ Rules covers:
- Lexical structure, escape sequences, and positional notation systems
- The anatomy of a compilation unit
- The five kinds of classes and interfaces
- Containment and inner class hierarchies (versus inheritance hierarchies)
- The static modifier, this and super
- Primitive data types and Object
- Strings and other common data types
- Arrays and the Collections Framework
With Java™ Rules in hand, both novices and experienced programmers canlanguage.
Contents
Preface.
About This Book.
A Java Tradition.
1. Lexical Structure.
Introduction.
White Space.
Comments.
Identifiers.
Keywords.
Literals.
Separators.
Operators.
White Space.
Indenting.
Comments.
Commenting Out Large
Blocks of Code.
Identifiers.
Java Naming
Conventions.
Keywords.
Literals.
Character Literals.
Escape Sequences.
String Literals.
Numeric Literals.
Class Literals.
Escape Sequences.
String Literals.
Numeric Literals.
Class Literals.
Separators.
Operators.
2. Compilation Units.
Introduction.
The Terminology of Class Body Declarations.
Anatomy of a Compilation Unit.
Package Declarations.
Import Declarations.
Type Declarations.
The Definition of Top-Level Classes.
Helper Classes are Not Fundamentally Different.
The Five Kinds of Classes and Interfaces.
Choosing Which Kind of Class to Use.
The Rationale for Containment and Inner Class Hierarchies.
Containment and Inner Class Hierarchies.
The Terminology of Class Body Declarations.
The Definition of Fields
in Java.
Recognizing Constructors in Source Code.
Recognizing Constructors in Source Code.
Anatomy of a Compilation Unit.
Special Initialization
Methods.
The Significance of Textual Order.
Limit of One “public” Package Member.
The Significance of Textual Order.
Limit of One “public” Package Member.
Package Declarations.
Package Names.
The Members of a Package.
Using the SDK to Develop Packages.
The Members of a Package.
Using the SDK to Develop Packages.
Import Declarations.
Automatic Imports.
Redundant Imports.
Importing Nested Classes of All Sorts (Top-Level or Inner).
How Import Declarations are Used by a Compiler.
The Efficiency of Type-Import-on-Demand Declarations.
Redundant Imports.
Importing Nested Classes of All Sorts (Top-Level or Inner).
How Import Declarations are Used by a Compiler.
The Efficiency of Type-Import-on-Demand Declarations.
Type Declarations.
Class Type
Declarations.
Interface Type Declarations.
Interface Type Declarations.
The Definition of Top-Level Classes.
Helper Classes are Not Fundamentally Different.
Technical Arguments
Against the Use of Helper Classes.
The Five Kinds of Classes and Interfaces.
“Public”
Top-Level Classes.
Non-“public” Member Classes.
Local and Anonymous Classes.
Nested Interfaces.
Non-“public” Member Classes.
Local and Anonymous Classes.
Nested Interfaces.
Choosing Which Kind of Class to Use.
From
“VectorEnumerator” to an Anonymous Class.
The Rationale for Containment and Inner Class Hierarchies.
Containment and Inner Class Hierarchies.
Containment
Hierarchies.
Inner Class Hierarchies.
Inner Class Hierarchies.
3. The “static” Modifier, “this,” and “super” .
Introduction.
The “static” Modifier.
The Definition of “static” Context.
The “this” and “super” Keywords.
Practical Uses of the “this” and “super” Keywords.
Multiple Current Instances (a.k.a. Levels).
The “static” Modifier.
“static”
Fields.
“static” Methods.
“static” Classes.
“static” Methods.
“static” Classes.
The Definition of “static” Context.
The “static”
Context in an Inner Class Hierarchy.
The “this” and “super” Keywords.
The Current Object
(“this” ).
The Direct Superclass (“super” ).
The Direct Superclass (“super” ).
Practical Uses of the “this” and “super” Keywords.
Using “super”
to Reference Members in Different Packages.
Multiple Current Instances (a.k.a. Levels).
A Note About Deeply Nested
Types.
Qualifying the “this” Keyword.
Qualifying the “new” Keyword.
Qualifying the “super” Keyword.
Qualifying the “this” Keyword.
Qualifying the “new” Keyword.
Qualifying the “super” Keyword.
4. Primitive Data Types and Object.
Introduction.
The Definition of Data Types.
Numeric Data Types.
The “char” Data Type.
The “boolean” Data Type.
The “null” Type.
The “Number” Class.
The “java.math” Package.
Currency Calculations.
Primitive Type Wrapper Classes.
The “Object” Class.
The Comparison Methods.
The Definition of Data Types.
Data Type as a Set of
Values.
The Object-Oriented Definition of Type.
The Object-Oriented Definition of Type.
Numeric Data Types.
Integral Types.
Floating-Point Types.
Understanding the Floating-Point Types.
Floating-Point Types.
Understanding the Floating-Point Types.
The “char” Data Type.
The “boolean” Data Type.
The “null” Type.
The “Number” Class.
The “java.math” Package.
The
“BigInteger” Class.
The “BigDecimal” Class.
The “BigDecimal” Class.
Currency Calculations.
Inexact Results and
Comparison Operators.
Rounding the Result of a Floating-Point Operation.
Using Integral Types to Store Monetary Values.
Rounding the Result of a Floating-Point Operation.
Using Integral Types to Store Monetary Values.
Primitive Type Wrapper Classes.
Parsing Strings for
Primitive Type Values.
Converting Primitive Numeric Types to Strings.
Bit Pattern Manipulation.
Accessing Primitive Type System Properties.
Unicode Utility Methods.
Converting Primitive Numeric Types to Strings.
Bit Pattern Manipulation.
Accessing Primitive Type System Properties.
Unicode Utility Methods.
The “Object” Class.
Reference Equality Versus
the Equivalence Relationship.
Understanding Hash Tables.
The Five Housekeeping Methods.
Understanding Hash Tables.
The Five Housekeeping Methods.
The Comparison Methods.
What is Default
Ordering?
What is Natural Ordering?
Reverse Order (or Descending) Sorts.
Sorting By More Than One Field.
The “Comparable” Interface.
The “Comparator” Interface.
What is Natural Ordering?
Reverse Order (or Descending) Sorts.
Sorting By More Than One Field.
The “Comparable” Interface.
The “Comparator” Interface.
5. Strings and Other Common Data Types.
Introduction.
Would-Be Mutator Methods.
The Length of a “String” or “StringBuffer” .
The Capacity of a “StringBuffer” .
“String” Indices.
Checked Exceptions in String and “StringBuffer” .
The “String” Class.
The “StringBuffer” Class.
Other String-Related Classes.
Lexical Analysis.
String Concatenation Operations.
Displaying Diagnostic Messages on the Console.
The Locale” Class.
The “Date” Class.
The “GregorianCalendar” Class.
Date and Time Fields in the Calendar Class.
The “TimeZone” Class.
Understanding the Difference between i18n and l10n.
The Localization of Common Data Types.
Would-Be Mutator Methods.
The Length of a “String” or “StringBuffer” .
The Capacity of a “StringBuffer” .
Ensuring the Capacity of a
“StringBuffer” .
“String” Indices.
Right-Open Intervals in
“String” and “StringBuffer” .
Checked Exceptions in String and “StringBuffer” .
The “String” Class.
Case Mappings.
Comparing Strings.
Accessing Individual Characters or Substrings.
“char” to “String” Conversions and Vice Versa.
Translating Locally Encoded Strings.
Miscellaneous Methods in the “String” Class.
Unusual Constructors in the “String” Class.
Comparing Strings.
Accessing Individual Characters or Substrings.
“char” to “String” Conversions and Vice Versa.
Translating Locally Encoded Strings.
Miscellaneous Methods in the “String” Class.
Unusual Constructors in the “String” Class.
The “StringBuffer” Class.
The Overloaded insert and
append Methods.
Other Methods in the “StringBuffer” Class.
Other Methods in the “StringBuffer” Class.
Other String-Related Classes.
The
“StringCharacterIterator” Class.
The “StringReader” and “StringWriter” Classes.
The “StringReader” and “StringWriter” Classes.
Lexical Analysis.
The
“BreakIterator” Class.
The “StringTokenizer” Class.
The “StreamTokenizer” Class.
The “StringTokenizer” Class.
The “StreamTokenizer” Class.
String Concatenation Operations.
A Note about the
Overloaded Binary + Operator.
Implicit String Conversions.
The Intern Mechanism.
Shared Character Buffers.
Implicit String Conversions.
The Intern Mechanism.
Shared Character Buffers.
Displaying Diagnostic Messages on the Console.
Standard I/O.
The “print” and “println” Methods.
The “print” and “println” Methods.
The Locale” Class.
The Default Locale.
Supported Locales.
Supported Locales.
The “Date” Class.
Date Comparisons.
The “GregorianCalendar” Class.
Instantiating the
“GregorianCalendar” Class.
The Inconsistent Field Rule.
The Maximum DAY_OF_MONTH Rule.
The Inconsistent Field Rule.
The Maximum DAY_OF_MONTH Rule.
Date and Time Fields in the Calendar Class.
Standard Default Values
for Date and Time Fields.
Normalizing Date and Time Fields.
Date and Time Field Manipulation Methods.
Normalizing Date and Time Fields.
Date and Time Field Manipulation Methods.
The “TimeZone” Class.
Understanding the Difference between i18n and l10n.
The Localization of Common Data Types.
Formatting Numbers.
Formatting Dates and Times.
Formatting Dates and Times.
6. Arrays and The Collections Framework.
Introduction.
Array, Component, and Element Types.
Arrays.
A Bridge over Troubled Waters (the “toArray” Methods).
Untyped References versus Parameterized Types.
Time Complexities (or Big-O Notation).
The Equivalence Relationship and Elements.
Duplicate Elements.
The Collections Framework.
General-Purpose Implementations.
Special-Purpose Implementations.
Views.
Iterators.
Al-Khwarizmi Concerning the Hindu Art of Reckoning.
Utility Methods for “Arrays” and Other “Collections” .
Custom Implementations of the Core Collection Interfaces.
Multimaps and Multidimensional Arrays.
Legacy Containers.
Array, Component, and Element Types.
Arrays.
The Canonical Form of the
“for” Loop.
Array Classes Are Dynamically Created.
The Members of an Array Type.
Array Type Variable Declarations.
Initializing Array Type Variables.
Array Access Expressions.
Array Classes Are Dynamically Created.
The Members of an Array Type.
Array Type Variable Declarations.
Initializing Array Type Variables.
Array Access Expressions.
A Bridge over Troubled Waters (the “toArray” Methods).
Untyped References versus Parameterized Types.
What Is Run-Time
Type?
Time Complexities (or Big-O Notation).
Constant Time
Operations.
Amortized Constant Time.
Logarithmic Time.
Linear Time.
Quadratic Time.
Amortized Constant Time.
Logarithmic Time.
Linear Time.
Quadratic Time.
The Equivalence Relationship and Elements.
Duplicate Elements.
Using Mutable Objects as
Elements in a “Set” or Keys in a
“Map” .
The Collections Framework.
Bulk Operations.
The Principle of Maximum Generality.
The “Collection” Interface.
The Map Interface.
Housekeeping Methods for Containers.
The Principle of Maximum Generality.
The “Collection” Interface.
The Map Interface.
Housekeeping Methods for Containers.
General-Purpose Implementations.
Choosing a General-Purpose
Implementation.
Performance Tuning the General-Purpose Implementations.
Performance Tuning the General-Purpose Implementations.
Special-Purpose Implementations.
“WeakHashMap”
.
Views.
Synchronized Views.
Unmodifiable Views.
Range Views (Sublists, Subsets, and Submaps).
Collection Views of a Map.
List View of an Array.
Unmodifiable Views.
Range Views (Sublists, Subsets, and Submaps).
Collection Views of a Map.
List View of an Array.
Iterators.
List Iterators.
Using Collection Views to Iterate over a Map.
A Poor Man's Collection.
Synchronized Iterators.
Fail-Fast Iterators.
Iterating Backwards Through a “TreeSet” or “TreeMap” .
Using Collection Views to Iterate over a Map.
A Poor Man's Collection.
Synchronized Iterators.
Fail-Fast Iterators.
Iterating Backwards Through a “TreeSet” or “TreeMap” .
Al-Khwarizmi Concerning the Hindu Art of Reckoning.
Utility Methods for “Arrays” and Other “Collections” .
Sorting Containers.
Searching.
Cloning versus Copying a Container.
Shuffling.
Filling.
The Minimum and Maximum Elements.
Convenience Implementations.
An “equals” Method for Arrays.
Searching.
Cloning versus Copying a Container.
Shuffling.
Filling.
The Minimum and Maximum Elements.
Convenience Implementations.
An “equals” Method for Arrays.
Custom Implementations of the Core Collection Interfaces.
Abstract
Implementations.
Optional Operations.
Restricted Containers.
Standard Constructors.
Optional Operations.
Restricted Containers.
Standard Constructors.
Multimaps and Multidimensional Arrays.
Multimaps.
Multidimensional Arrays.
Multidimensional Arrays.
Legacy Containers.
Index.
Caractéristiques techniques
| PAPIER | |
| Éditeur(s) | Addison Wesley |
| Auteur(s) | Douglas Dunn |
| Parution | 02/11/2001 |
| Nb. de pages | 688 |
| Format | 18,6 x 23,2 |
| Couverture | Broché |
| Poids | 1045g |
| Intérieur | Noir et Blanc |
| EAN13 | 9780201709162 |
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