Java Cookbook. Problems and Solutions for Java Developers. 4th Edition

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• Preface
  • Who This Book Is For
  • Whats in This Book?
  • Java Books
  • Conventions Used in This Book
  • OReilly Online Learning
  • Comments and Questions
  • Acknowledgments
• 1. Getting Started: Compiling and Running Java
  • 1.0. Introduction
  • 1.1. Compiling and Running Java: Standard JDK
  • 1.2. Compiling and Running Java: GraalVM for Better Performance
  • 1.3. Compiling, Running, and Testing with an IDE
  • 1.4. Exploring Java with JShell
  • 1.5. Using CLASSPATH Effectively
  • 1.6. Downloading and Using the Code Examples
  • 1.7. Automating Dependencies, Compilation, Testing, and Deployment with Apache Maven
  • 1.8. Automating Dependencies, Compilation, Testing, and Deployment with Gradle
  • 1.9. Dealing with Deprecation Warnings
  • 1.10. Maintaining Code Correctness with Unit Testing: JUnit
  • 1.11. Maintaining Your Code with Continuous Integration
  • 1.12. Getting Readable Stack Traces
  • 1.13. Finding More Java Source Code
  • 1.14. Finding Runnable Java Libraries
• 2. Interacting with the Environment
  • 2.0. Introduction
  • 2.1. Getting Environment Variables
  • 2.2. Getting Information from System Properties
  • 2.3. Dealing with Code That Depends on the Java Version or the Operating System
  • 2.4. Using Extensions or Other Packaged APIs
  • 2.5. Using the Java Modules System
• 3. Strings and Things
  • 3.0. Introduction
  • 3.1. Taking Strings Apart with Substrings or Tokenizing
  • 3.2. Putting Strings Together with StringBuilder
  • 3.3. Processing a String One Character at a Time
  • 3.4. Aligning, Indenting, and Unindenting Strings
  • 3.5. Converting Between Unicode Characters and Strings
  • 3.6. Reversing a String by Word or by Character
  • 3.7. Expanding and Compressing Tabs
  • 3.8. Controlling Case
  • 3.9. Entering Nonprintable Characters
  • 3.10. Trimming Blanks from the End of a String
  • 3.11. Creating a Message with I18N Resources
  • 3.12. Using a Particular Locale
  • 3.13. Creating a Resource Bundle
  • 3.14. Program: A Simple Text Formatter
  • 3.15. Program: Soundex Name Comparisons
• 4. Pattern Matching with Regular Expressions
  • 4.0. Introduction
  • 4.1. Regular Expression Syntax
  • 4.2. Using Regexes in Java: Test for a Pattern
  • 4.3. Finding the Matching Text
  • 4.4. Replacing the Matched Text
  • 4.5. Printing All Occurrences of a Pattern
  • 4.6. Printing Lines Containing a Pattern
  • 4.7. Controlling Case in Regular Expressions
  • 4.8. Matching Accented, or Composite, Characters
  • 4.9. Matching Newlines in Text
  • 4.10. Program: Apache Logfile Parsing
  • 4.11. Program: Full Grep
• 5. Numbers
  • 5.0. Introduction
  • 5.1. Checking Whether a String Is a Valid Number
  • 5.2. Converting Numbers to Objects and Vice Versa
  • 5.3. Taking a Fraction of an Integer Without Using Floating Point
  • 5.4. Working with Floating-Point Numbers
  • 5.5. Formatting Numbers
  • 5.6. Converting Among Binary, Octal, Decimal, and Hexadecimal
  • 5.7. Operating on a Series of Integers
  • 5.8. Formatting with Correct Plurals
  • 5.9. Generating Random Numbers
  • 5.10. Multiplying Matrices
  • 5.11. Using Complex Numbers
  • 5.12. Handling Very Large Numbers
  • 5.13. Program: TempConverter
  • 5.14. Program: Number Palindromes
• 6. Dates and Times
  • 6.0. Introduction
  • 6.1. Finding Todays Date
  • 6.2. Formatting Dates and Times
  • 6.3. Converting Among Dates/Times, YMDHMS, and Epoch Seconds
  • 6.4. Parsing Strings into Dates
  • 6.5. Difference Between Two Dates
  • 6.6. Adding to or Subtracting from a Date
  • 6.7. Handling Recurring Events
  • 6.8. Computing Dates Involving Time Zones
  • 6.9. Interfacing with Legacy Date and Calendar Classes
• 7. Structuring Data with Java
  • 7.0. Introduction
  • 7.1. Using Arrays for Data Structuring
  • 7.2. Resizing an Array
  • 7.3. The Collections Framework
  • 7.4. Like an Array, but More Dynamic
  • 7.5. Using Generic Types in Your Own Class
  • 7.6. How Shall I Iterate Thee? Let Me Enumerate the Ways
  • 7.7. Eschewing Duplicates with a Set
  • 7.8. Structuring Data in a Linked List
  • 7.9. Mapping with Hashtable and HashMap
  • 7.10. Storing Strings in Properties and Preferences
  • 7.11. Sorting a Collection
  • 7.12. Avoiding the Urge to Sort
  • 7.13. Finding an Object in a Collection
  • 7.14. Converting a Collection to an Array
  • 7.15. Making Your Data Iterable
  • 7.16. Using a Stack of Objects
  • 7.17. Multidimensional Structures
  • 7.18. Simplifying Data Objects with Lombok or Record
  • 7.19. Program: Timing Comparisons
• 8. Object-Oriented Techniques
  • 8.0. Introduction
  • 8.1. Object Methods: Formatting Objects with toString(), Comparing with Equals
  • 8.2. Using Inner Classes
  • 8.3. Providing Callbacks via Interfaces
  • 8.4. Polymorphism/Abstract Methods
  • 8.5. Using Typesafe Enumerations
  • 8.6. Avoiding NPEs with Optional
  • 8.7. Enforcing the Singleton Pattern
  • 8.8. Roll Your Own Exceptions
  • 8.9. Using Dependency Injection
  • 8.10. Program: Plotter
• 9. Functional Programming Techniques: Functional Interfaces, Streams, and Parallel Collections
  • 9.0. Introduction
  • 9.1. Using Lambdas/Closures Instead of Inner Classes
  • 9.2. Using Lambda Predefined Interfaces Instead of Your Own
  • 9.3. Simplifying Processing with Streams
  • 9.4. Simplifying Streams with Collectors
  • 9.5. Improving Throughput with Parallel Streams and Collections
  • 9.6. Using Existing Code as Functional with Method References
  • 9.7. Java Mixins: Mixing in Methods
• 10. Input and Output: Reading, Writing, and Directory Tricks
  • 10.0. Introduction
  • 10.1. About InputStreams/OutputStreams and Readers/Writers
  • 10.2. Reading a Text File
  • 10.3. Reading from the Standard Input or from the Console/Controlling Terminal
  • 10.4. Printing with Formatter and printf
  • 10.5. Scanning Input with StreamTokenizer
  • 10.6. Scanning Input with the Scanner Class
  • 10.7. Scanning Input with Grammatical Structure
  • 10.8. Copying a File
  • 10.9. Reassigning the Standard Streams
  • 10.10. Duplicating a Stream as It Is Written; Reassigning Standard Streams
  • 10.11. Reading/Writing a Different Character Set
  • 10.12. Those Pesky End-of-Line Characters
  • 10.13. Beware Platform-Dependent File Code
  • 10.14. Reading/Writing Binary Data
  • 10.15. Reading and Writing JAR or ZIP Archives
  • 10.16. Finding Files in a Filesystem-Neutral Way with getResource() and getResourceAsStream()
  • 10.17. Getting File Information: Files and Path
  • 10.18. Creating a New File or Directory
  • 10.19. Changing a Files Name or Other Attributes
  • 10.20. Deleting a File
  • 10.21. Creating a Transient/Temporary File
  • 10.22. Listing a Directory
  • 10.23. Getting the Directory Roots
  • 10.24. Using the FileWatcher Service to Get Notified About File Changes
  • 10.25. Program: Save User Data to Disk
  • 10.26. Program: FindWalking a File Tree
• 11. Data Science and R
  • 11.1. Machine Learning with Java
  • 11.2. Using Data In Apache Spark
  • 11.3. Using R Interactively
  • 11.4. Comparing/Choosing an R Implementation
  • 11.5. Using R from Within a Java App: Renjin
  • 11.6. Using Java from Within an R Session
  • 11.7. Using FastR, the GraalVM Implementation of R
  • 11.8. Using R in a Web App
• 12. Network Clients
  • 12.0. Introduction
  • 12.1. HTTP/REST Web Client
  • 12.2. Contacting a Socket Server
  • 12.3. Finding and Reporting Network Addresses
  • 12.4. Handling Network Errors
  • 12.5. Reading and Writing Textual Data
  • 12.6. Reading and Writing Binary or Serialized Data
  • 12.7. UDP Datagrams
  • 12.8. URI, URL, or URN?
  • 12.9. Program: TFTP UDP Client
  • 12.10. Program: Sockets-Based Chat Client
  • 12.11. Program: Simple HTTP Link Checker
• 13. Server-Side Java
  • 13.0. Introduction
  • 13.1. Opening a Server Socket for Business
  • 13.2. Finding Network Interfaces
  • 13.3. Returning a Response (String or Binary)
  • 13.4. Returning Object Information Across a Network Connection
  • 13.5. Handling Multiple Clients
  • 13.6. Serving the HTTP Protocol
  • 13.7. Securing a Web Server with SSL and JSSE
  • 13.8. Creating a REST Service with JAX-RS
  • 13.9. Network Logging
  • 13.10. Setting Up SLF4J
  • 13.11. Network Logging with Log4j
  • 13.12. Network Logging with java.util.logging
• 14. Processing JSON Data
  • 14.0. Introduction
  • 14.1. Generating JSON Directly
  • 14.2. Parsing and Writing JSON with Jackson
  • 14.3. Parsing and Writing JSON with org.json
  • 14.4. Parsing and Writing JSON with JSON-B
  • 14.5. Finding JSON Elements with JSON Pointer
• 15. Packages and Packaging
  • 15.0. Introduction
  • 15.1. Creating a Package
  • 15.2. Documenting Classes with Javadoc
  • 15.3. Beyond Javadoc: Annotations/Metadata
  • 15.4. Preparing a Class as a JavaBean
  • 15.5. Archiving with JAR
  • 15.6. Running a Program from a JAR
  • 15.7. Packaging Web Tier Components into a WAR File
  • 15.8. Creating a Smaller Distribution with jlink
  • 15.9. Using JPMS to Create a Module
• 16. Threaded Java
  • 16.0. Introduction
  • 16.1. Running Code in a Different Thread
  • 16.2. Displaying a Moving Image with Animation
  • 16.3. Stopping a Thread
  • 16.4. Rendezvous and Timeouts
  • 16.5. Synchronizing Threads with the synchronized Keyword
  • 16.6. Simplifying Synchronization with Locks
  • 16.7. Simplifying Producer/Consumer with the Queue Interface
  • 16.8. Optimizing Parallel Processing with Fork/Join
  • 16.9. Scheduling Tasks: Future Times, Background Saving in an Editor
• 17. Reflection, or A Class Named Class
  • 17.0. Introduction
  • 17.1. Getting a Class Descriptor
  • 17.2. Finding and Using Methods and Fields
  • 17.3. Accessing Private Methods and Fields via Reflection
  • 17.4. Loading and Instantiating a Class Dynamically
  • 17.5. Constructing a Class from Scratch with a ClassLoader
  • 17.6. Constructing a Class from Scratch with JavaCompiler
  • 17.7. Performance Timing
  • 17.8. Printing Class Information
  • 17.9. Listing Classes in a Package
  • 17.10. Using and Defining Annotations
  • 17.11. Finding Plug-In-Like Classes via Annotations
  • 17.12. Program: CrossRef
• 18. Using Java with Other Languages
  • 18.0. Introduction
  • 18.1. Running an External Program from Java
  • 18.2. Running a Program and Capturing Its Output
  • 18.3. Calling Other Languages via javax.script
  • 18.4. Mixing Languages with GraalVM
  • 18.5. Marrying Java and Perl
  • 18.6. Calling Other Languages via Native Code
  • 18.7. Calling Java from Native Code
• Afterword
• A. Java Then and Now
  • Introduction: Always in Motion the Java Is
  • What Was New in Java 8
  • What Was New in Java 9
  • What Was New in Java 10 (March 2018)
  • What Was New in Java 11 (September 2018)
  • What Was New in Java 12 (March 2019)
  • What Is New in Java 13 (September 2019)
  • Looking Ahead
• Index

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