Java Cookbook | O'Reilly Media

Java Cookbook Solutions and Examples for Java Developers By Ian F. Darwin
June 2001
Pages: 882

| Table of Contents | Index | Sample Chapter | Colophon

Chapter 1 Getting Started: Compiling, Running, and Debugging
1. Introduction
2. Compiling and Running Java: JDK
3. Editing and Compiling with a Color-Highlighting Editor
4. Compiling, Running, and Testing with an IDE
5. Using Classes from This Book
6. Automating Compilation with jr
7. Automating Compilation with make
8. Automating Compilation with Ant
9. Running Applets
10. Dealing with Deprecation Warnings
11. Conditional Debugging without #ifdef
12. Debugging Printouts
13. Using a Debugger
14. Unit Testing: Avoid the Need for Debuggers
15. Decompiling Java Class Files
16. Preventing Others from Decompiling Your Java Files
17. Getting Readable Tracebacks
18. Finding More Java Source Code
19. Program: Debug
Chapter 2 Interacting with the Environment
1. Introduction
2. Getting Environment Variables
3. System Properties
4. Writing JDK Release-Dependent Code
5. Writing Operating System-Dependent Code
6. Using CLASSPATH Effectively
7. Using Extensions or Other Packaged APIs
8. Parsing Command-Line Arguments
Chapter 3 Strings and Things
1. Introduction
2. Taking Strings Apart with Substrings
3. Taking Strings Apart with StringTokenizer
4. Putting Strings Together with + and StringBuffer
5. Processing a String One Character at a Time
6. Aligning Strings
7. Converting Between Unicode Characters and Strings
8. Reversing a String by Word or Character
9. Expanding and Compressing Tabs
10. Controlling Case
11. Indenting Text Documents
12. Entering Non-Printable Characters
13. Trimming Blanks from the End of a String
14. Parsing Comma-Separated Data
15. Program: A Simple Text Formatter
16. Program: Soundex Name Comparisons
Chapter 4 Pattern Matching with Regular Expressions
1. Introduction
2. Regular Expression Syntax
3. How REs Work in Practice
4. Using Regular Expressions in Java
5. Testing REs Interactively
6. Finding the Matching Text
7. Replacing the Matching Text
8. Printing All Occurrences of a Pattern
9. Printing Lines Containing a Pattern
10. Controlling Case in match( ) and subst( )
11. Precompiling the RE
12. Matching Newlines in Text
13. Program: Data Mining
14. Program: Full Grep
Chapter 5 Numbers
1. Introduction
2. Checking Whether a String Is a Valid Number
3. Storing a Larger Number in a Smaller
4. Taking a Fraction of an Integer Without Using Floating Point
5. Ensuring the Accuracy of Floating-Point Numbers
6. Comparing Floating-Point Numbers
7. Rounding Floating-Point Numbers
8. Formatting Numbers
9. Converting Between Binary, Octal, Decimal, and Hexadecimal
10. Operating on a Series of Integers
11. Working with Roman Numerals
12. Formatting with Correct Plurals
13. Generating Random Numbers
14. Generating Better Random Numbers
15. Calculating Trigonometric Functions
16. Taking Logarithms
17. Multiplying Matrixes
18. Using Complex Numbers
19. Handling Very Large Numbers
20. Program: TempConverter
21. Program: Number Palindromes
Chapter 6 Dates and Times
1. Introduction
2. Finding Today's Date
3. Printing Date/Time in a Specified Format
4. Representing Dates in Other Epochs
5. Converting YMDHMS to a Calendar or Epoch Seconds
6. Parsing Strings into Dates
7. Converting Epoch Seconds to DMYHMS
8. Adding to or Subtracting from a Date or Calendar
9. Difference Between Two Dates
10. Comparing Dates
11. Day of Week/Month/Year or Week Number
12. Calendar Page
13. High-Resolution Timers
14. Sleeping for a While
15. Program: Reminder Service
Chapter 7 Structuring Data with Java
1. Introduction
2. Data Structuring Using Arrays
3. Resizing an Array
4. Like an Array, but More Dynamic
5. Data-Independent Access with Iterators
6. Structuring Data in a Linked List
7. Mapping with Hashtable and HashMap
8. Storing Strings in Properties and Preferences
9. Sorting a Collection
10. Sorting in Java 1.1
11. Avoiding the Urge to Sort
12. Sets
13. Finding an Object in a Collection
14. Converting a Collection to an Array
15. Rolling Your Own Iterator
16. Stack
17. Multidimensional Structures
18. Finally, Collections
19. Program: Timing Comparisons
Chapter 8 Object-Oriented Techniques
1. Introduction
2. Printing Objects: Formatting with toString( )
3. Overriding the Equals Method
4. Overriding the Hashcode Method
5. The Clone Method
6. The Finalize Method
7. Using Inner Classes
8. Providing Callbacks via Interfaces
9. Polymorphism/Abstract Methods
10. Passing Values
11. Roll Your Own Exceptions
12. Program: Plotter
Chapter 9 Input and Output
1. Introduction
2. Reading Standard Input
3. Writing Standard Output
4. Opening a File by Name
5. Copying a File
6. Reading a File into a String
7. Reassigning the Standard Streams
8. Duplicating a Stream as It Is Written
9. Reading/Writing a Different Character Set
10. Those Pesky End-of-Line Characters
11. Beware Platform-Dependent File Code
12. Reading "Continued" Lines
13. Scanning a File
14. Binary Data
15. Seeking
16. Writing Data Streams from C
17. Saving and Restoring Serialized Objects
18. Preventing ClassCastExceptions with SerialVersionUID
19. Reading and Writing JAR or Zip Archives
20. Reading and Writing Compressed Files
21. Program: Text to PostScript
22. Program: TarList (File Converter)
Chapter 10 Directory and Filesystem Operations
1. Introduction
2. Getting File Information
3. Creating a File
4. Renaming a File
5. Deleting a File
6. Creating a Transient File
7. Changing File Attributes
8. Listing a Directory
9. Getting the Directory Roots
10. Making New Directories
11. Program: Find
Chapter 11 Programming Serial and Parallel Ports
1. Introduction
2. Choosing a Port
3. Opening a Serial Port
4. Opening a Parallel Port
5. Resolving Port Conflicts
6. Reading and Writing: Lock Step
7. Reading and Writing: Event-Driven
8. Reading and Writing: Threads
9. Program: Penman Plotter
Chapter 12 Graphics and Sound
1. Introduction
2. Painting with a Graphics Object
3. Testing Graphical Components
4. Drawing Text
5. Drawing Centered Text in a Component
6. Drawing a Drop Shadow
7. Drawing an Image
8. Playing a Sound File
9. Displaying a Moving Image with Video
10. Drawing Text with 2D
11. Printing: JDK 1.1
12. Printing: Java 2
13. Program: PlotterAWT
14. Program: Grapher
Chapter 13 Graphical User Interfaces
1. Introduction
2. Displaying GUI Components
3. Designing a Window Layout
4. A Tabbed View of Life
5. Action Handling: Making Buttons Work
6. Action Handling Using Anonymous Inner Classes
7. Terminating a Program with "Window Close"
8. Dialogs: When Later Just Won't Do
9. Getting Program Output into a Window
10. Choosing a File with JFileChooser
11. Choosing a Color
12. Centering a Main Window
13. Changing a Swing Program's Look and Feel
14. Program: Custom Font Chooser
15. Program: Custom Layout Manager
Chapter 14 Internationalization and Localization
1. Introduction
2. Creating a Button with I18N Resources
3. Listing Available Locales
4. Creating a Menu with I18N Resources
5. Writing Internationalization Convenience Routines
6. Creating a Dialog with I18N Resources
7. Creating a Resource Bundle
8. JILTing Your Code
9. Using a Particular Locale
10. Setting the Default Locale
11. Formatting Messages
12. Program: MenuIntl
13. Program: BusCard
Chapter 15 Network Clients
1. Introduction
2. Contacting a Server
3. Finding and Reporting Network Addresses
4. Handling Network Errors
5. Reading and Writing Textual Data
6. Reading and Writing Binary Data
7. Reading and Writing Serialized Data
8. UDP Datagrams
9. Program: TFTP UDP Client
10. Program: Telnet Client
11. Program: Chat Client
Chapter 16 Server-Side Java: Sockets
1. Introduction
2. Opening a Server for Business
3. Returning a Response (String or Binary)
4. Returning Object Information
5. Handling Multiple Clients
6. Network Logging
7. Program: A Java Chat Server
Chapter 17 Network Clients II: Applets and Web Clients
1. Introduction
2. Embedding Java in a Web Page
3. Applet Techniques
4. Contacting a Server on the Applet Host
5. Making an Applet Show a Document
6. Making an Applet Run a CGI Script
7. Reading the Contents of a URL
8. Extracting HTML from a URL
9. Extracting URLs from a File
10. Converting a Filename to a URL
11. Program: MkIndex
12. Program: LinkChecker
Chapter 18 Web Server Java: Servlets and JSP
1. Introduction
2. First Servlet: Generating an HTML Page
3. Servlets: Processing Form Parameters
4. Cookies
5. Session Tracking
6. Generating PDF from a Servlet
7. HTML Meets Java: JSP
8. JSP Include/Forward
9. JavaServer Pages Using a Servlet
10. Simplifying Your JSP with a JavaBean
11. JSP Syntax Summary
12. Program: CookieCutter
13. Program: JabaDot Web News Portal
Chapter 19 Java and Electronic Mail
1. Introduction
2. Sending Email: Browser Version
3. Sending Email: For Real
4. Mail-Enabling a Server Program
5. Sending MIME Mail
6. Providing Mail Settings
7. Sending Mail Without Using JavaMail
8. Reading Email
9. Program: MailReaderBean
10. Program: MailClient
Chapter 20 Database Access
1. Introduction
2. Text-File Databases
3. DBM Databases
4. JDBC Setup and Connection
5. Connecting to a JDBC Database
6. Sending a JDBC Query and Getting Results
7. Using JDBC Parameterized Statements
8. Using Stored Procedures with JDBC
9. Changing Data Using a ResultSet
10. Changing Data Using SQL
11. Finding JDBC Metadata
12. Program: JDAdmin
Chapter 21 XML
1. Introduction
2. Transforming XML with XSLT
3. Parsing XML with SAX
4. Parsing XML with DOM
5. Verifying Structure with a DTD
6. Generating Your Own XML with DOM
7. Program: xml2mif
Chapter 22 Distributed Java: RMI
1. Introduction
2. Defining the RMI Contract
3. RMI Client
4. RMI Server
5. Deploying RMI Across a Network
6. Program: RMI Callbacks
7. Program: RMIWatch
Chapter 23 Packages and Packaging
1. Introduction
2. Creating a Package
3. Documenting Classes with Javadoc
4. Archiving with jar
5. Running an Applet from a JAR
6. Running an Applet with a JDK
7. Running a Program from a JAR
8. Preparing a Class as a JavaBean
9. Pickling Your Bean into a JAR
10. Packaging a Servlet into a WAR File
11. "Write Once, Install Anywhere"
12. Java Web Start
13. Signing Your JAR File
Chapter 24 Threaded Java
1. Introduction
2. Running Code in a Different Thread
3. Displaying a Moving Image with Animation
4. Stopping a Thread
5. Rendezvous and Timeouts
6. Thread Communication: Synchronized Code
7. Thread Communication: wait( ) and notifyAll( )
8. Background Saving in an Editor
9. Threaded Network Server
Chapter 25 Introspection, or "A Class Named Class"
1. Introduction
2. Getting a Class Descriptor
3. Finding and Using Methods and Fields
4. Loading and Instantiating a Class Dynamically
5. Constructing a Class from Scratch
6. Performance Timing
7. Printing Class Information
8. Program: CrossRef
9. Program: AppletViewer
Chapter 26 Using Java with Other Languages
1. Introduction
2. Running a Program
3. Running a Program and Capturing Its Output
4. Mixing Java and Scripts with BSF
5. Blending in Native Code (C/C++)
6. Calling Java from Native Code
7. Program: DBM
Chapter 27 Afterword

Colophon

Return to Java Cookbook

Table of Contents

Chapter 1 Getting Started: Compiling, Running, and Debugging

Introduction

Compiling and Running Java: JDK

Editing and Compiling with a Color-Highlighting Editor

Compiling, Running, and Testing with an IDE

Using Classes from This Book

Automating Compilation with jr

Automating Compilation with make

Automating Compilation with Ant

Running Applets

Dealing with Deprecation Warnings

Conditional Debugging without #ifdef

Debugging Printouts

Using a Debugger

Unit Testing: Avoid the Need for Debuggers

Decompiling Java Class Files

Preventing Others from Decompiling Your Java Files

Getting Readable Tracebacks

Finding More Java Source Code

Program: Debug

Chapter 2 Interacting with the Environment

Introduction

Getting Environment Variables

System Properties

Writing JDK Release-Dependent Code

Writing Operating System-Dependent Code

Using CLASSPATH Effectively

Using Extensions or Other Packaged APIs

Parsing Command-Line Arguments

Chapter 3 Strings and Things

Introduction

Taking Strings Apart with Substrings

Taking Strings Apart with StringTokenizer

Putting Strings Together with + and StringBuffer

Processing a String One Character at a Time

Aligning Strings

Converting Between Unicode Characters and Strings

Reversing a String by Word or Character

Expanding and Compressing Tabs

Controlling Case

Indenting Text Documents

Entering Non-Printable Characters

Trimming Blanks from the End of a String

Parsing Comma-Separated Data

Program: A Simple Text Formatter

Program: Soundex Name Comparisons

Chapter 4 Pattern Matching with Regular Expressions

Introduction

Regular Expression Syntax

How REs Work in Practice

Using Regular Expressions in Java

Testing REs Interactively

Finding the Matching Text

Replacing the Matching Text

Printing All Occurrences of a Pattern

Printing Lines Containing a Pattern

Controlling Case in match( ) and subst( )

Precompiling the RE

Matching Newlines in Text

Program: Data Mining

Program: Full Grep

Chapter 5 Numbers

Introduction

Checking Whether a String Is a Valid Number

Storing a Larger Number in a Smaller

Taking a Fraction of an Integer Without Using Floating Point

Ensuring the Accuracy of Floating-Point Numbers

Comparing Floating-Point Numbers

Rounding Floating-Point Numbers

Formatting Numbers

Converting Between Binary, Octal, Decimal, and Hexadecimal

Operating on a Series of Integers

Working with Roman Numerals

Formatting with Correct Plurals

Generating Random Numbers

Generating Better Random Numbers

Calculating Trigonometric Functions

Taking Logarithms

Multiplying Matrixes