Cover
Half Title
Title Page
Copyright Page
Table of Contents
About the Author
Introduction
Previous Knowledge and Target Audience
Working with the Book
The Suggested Solutions
Use of the Book
Required Software
Used Java Version in the Book
JVM
Development Environment
Conventions
Helping Captain CiaoCiao and Bonny Brain
1 Advanced String Processing
Format Strings
Build ASCII Table
Aligned Outputs
Regular Expressions and Pattern Recognition
Quiz: Define Regex
Determine Popularity in Social Media
Detect Scanned Values
Quiet Please! Defuse Shouting Texts
Converting Time from AM/PM Format to 24-Hour Format
Decompose Strings into Tokens
Split Address Lines with the StringTokenizer
Split Sentences into Words and Reverse Them
Check Relations between Numbers
Convert A1 Notation to Columns and Rows
Parse Simple CSV Files with Coordinates
Compress Strings Lossless by Runlength Encoding
Character Encodings and Unicode Collation Algorithm
Quiz: Encoding for Unicode Characters
Quiz: Order of Strings with and without Collator
Suggested Solutions
Build ASCII Table
Aligned Outputs
Quiz: Define Regex
Determine Popularity in Social Media
Detect Scanned Values
Quiet Please! Defuse Shouting Texts
Converting Time from AM/PM Format to 24-Hour Format
Split Address Lines with the StringTokenizer
Split Sentences into Words and Reverse Them
Check Relations between Numbers
Convert A1 Notation to Columns and Rows
Parse Simple CSV Files with Coordinates
Compress Strings Lossless by Runlength Encoding
Quiz: Encoding for Unicode Characters
Quiz: Order of Strings with and without Collator
2 Mathematics
The Class Math
Quiz: Rule of Thumb
Check If Tin Tin Cheated on Rounding
Huge and Very Precise Numbers
Calculate Arithmetic Mean of a Large Integer
Number by Number over the Phone
Develop Class for Fractions and Truncate Fractions
Suggested Solutions
Quiz: Rule of Thumb
Check If Tin Tin Cheated on Rounding
Calculate Arithmetic Mean of a Large Integer
Number by Number over the Phone
Develop Class for Fractions and Truncate Fractions
3 Locale, Date, and Time
Languages and Countries
Apply Country-/Language-Specific Formatting for Random Number
Date and Time Classes
Formatting Date Output in Different Languages
On Which Day Does Sir Francis Beaufort Celebrate His Birthday?
Find All Friday the 13th
Get Average Duration of Karaoke Nights
Parse Different Date Formats
Suggested Solutions
Apply Country-/Language-Specific Formatting for Random Number
Formatting Date Output in Different Languages
On Which Day Does Sir Francis Beaufort Celebrate His Birthday?
Find All Friday the 13th
Get Average Duration of Karaoke Nights
Parse Different Date Formats
4 Concurrent Programming with Threads
Create Threads
Create Threads for Waving and Flag Waving
No More Waving Flags: End Threads
Parameterize Runnable
Execute and Idle
Delay Execution by Sleeping Threads
Watch File Changes by Threads
Catch Exceptions
Thread Pools and Results
Using Thread Pools
Get Last Modification of Web Pages
Protect Critical Sections
Writing Memories into a Poetry Album
Thread Cooperation and Synchronization Helper
Attending the Banquet with the Captains—Semaphore
Swearing and Insulting—Condition
Take Pens Out of Paintbox—Condition
Play Rock, Paper, Scissors—CyclicBarrier
Find the Fastest Runner—CountDownLatch
Suggested Solutions
Create Threads for Waving and Flag Waving
No More Waving Flags: End Threads
Parameterize Runnable
Delay Execution by Sleeping Threads
Watch File Changes by Threads
Catch Exceptions
Using Thread Pools
Get Last Modification of Web Pages
Writing Memories into a Poetry Album
Attending the Banquet with the Captains—Semaphore
Swearing and Insulting—Condition
Take Pens Out of Paintbox—Condition
Play Rock, Paper, Scissors—CyclicBarrier
Find the Fastest Runner—CountDownLatch
5 Data Structures and Algorithms
The Types of the Collection API
Quiz: Search for StringBuilder
Lists
Singing and Cooking: Traverse Lists and Check Properties
Filter Comments from Lists
Shorten Lists Because There Is No Downturn
Eating with Friends: Compare Elements, Find Commonalities
Check Lists for the Same Order of Elements
And Now the Weather: Find Repeated Elements
Generate Receipt Output
Quiz: Arrays Decorated
Quiz: Searched and Not Found
Everything Tastes Better with Cheese: Insert Elements into Lists
Quiz: With Nothing but Trouble
Search Elements with the Iterator and Find Covid Cough
Move Elements, Play Musical Chairs
Programming a Question Game with Planets
Sets
Form Subsets, Find Common Elements
Quiz: Great Swords
Get All Words Contained in a Word
Exclude Duplicate Elements with a UniqueIterator
Map Keys to Values
Convert Two-Dimensional Arrays to Map
Convert Text to Morse Code and Vice Versa
Remember Word Frequency with Associative Memory
Read In and Read Out Colors
Read in Names and Manage Lengths
Find Missing Characters
Calculate Number of Paths to the Three-Headed Monkey
Manage Holidays in a Sorted Associative Store
Quiz: Keys in a HashMap
Determine Commonality: Party Set and Souvenir
Properties
Develop Convenient Properties Decorator
Stack and Queues
Program RPN Pocket Calculator
BitSet
Forget No Ship
Find Duplicate Entries and Solve the Animal Chaos
Thread-Safe Data Structures
Loading Ship
Handle Important Messages First
If Used Up, Create a New One
Suggested Solutions
Quiz: Search for StringBuilder
Singing and Cooking: Traverse Lists and Check Properties
Filter Comments from Lists
Shorten Lists Because There Is No Downturn
Eating with Friends: Compare Elements, Find Commonalities
Check Lists for the Same Order of Elements
And Now the Weather: Find Repeated Elements
Generate Receipt Output
Quiz: Arrays Decorated
Quiz: Searched and Not Found
Everything Tastes Better with Cheese: Insert Elements into Lists
Quiz: With Nothing but Trouble
Search Elements with the Iterator and Find Covid Cough
Move Elements, Play Musical Chairs
Programming a Question Game with Planets
Form Subsets, Find Common Elements
Quiz: Great Swords
Get All Words Contained in a Word
Exclude Duplicate Elements with a UniqueIterator
Convert Two-Dimensional Arrays to Map
Convert Text to Morse Code and Vice Versa
Remember Word Frequency with Associative Memory
Read In and Read Out Colors
Read in Names and Manage Lengths
Find Missing Characters
Calculate the Number of Paths to the Three-Headed Monkey
Manage Holidays in a Sorted Associative Store
Quiz: Keys in a HashMap
Determine Commonality: Party Set and Souvenir
Develop Convenient Properties Decorator
Program RPN Pocket Calculator
Forget No Ship
Find Duplicate Entries and Solve the Animal Chaos
Loading Ship
Handle Important Messages First
If Used Up, Create a New One
Notes
6 Java Stream-API
Regular Streams with Their Terminal and Intermediate Operations
Hero Epic: Meet Stream API
Quiz: Double Output
Get the Beloved Captain from a List
Frame Pictures
Look and Say
Remove Duplicate Islands of Rare Earth Metals
Where Are the Sails?
Buy the Most Popular Car
Primitive Streams
Detect NaN in an Array
Generate Decades
Generate Array with Constant Content via Stream
Draw Pyramids
Teddies Labeled with Letters
Get the Letter Frequency of a String
From 1 to 0, from 10 to 9
The Annual Octopus Contest
Merge Three int Arrays
Determine Winning Combinations
Statistics
The Fastest and Slowest Paddlers
Calculate Median
Calculate Temperature Statistics and Draw Charts
Suggested Solutions
Hero Epic: Meet Stream API
Quiz: Double Output
Get the Beloved Captain from a List
Frame Pictures
Look and Say
Remove Duplicate Islands of Rare Earth Metals
Where Are the Sails?
Buy the Most Popular Car
Detect NaN in an Array
Generate Decades
Generate Array with Constant Content via Stream
Teddies Labeled with Letters
Draw Pyramids
Get the Letter Frequency of a String
From 1 to 0, from 10 to 9
The Annual Octopus Contest
Merge Three int Arrays
Determine Winning Combinations
The Fastest and Slowest Paddlers
Calculate Median
Calculate Temperature Statistics and Draw Charts
Note
7 Files, Directories, and File Access
Path and Files
Display Saying of the Day
Merge Hiding Places
Create Copies of a File
Generate a Directory Listing
Search for Large GIF Files
Descend Directories Recursively and Find Empty Text Files
Develop Your Own Utility Library for File Filters
Random Access to File Contents
Output Last Line of a Text File
Suggested Solutions
Display Saying of the Day
Merge Hiding Places
Create Copies of a File
Generate a Directory Listing
Search for Large GIF Files
Descend Directories Recursively and Find Empty Text Files
Develop Your Own Utility Library for File Filters
Output Last Line of a Text File
8 Input/Output Streams
Direct Data Streams
Get the Number of Different Places (Read Files)
Convert Python Program to Java (Write File)
Generate Target Code (Write File)
Convert File Contents to Lowercase (Read and Write File)
Convert PPM Graphics to ASCII Grayscale
Split Files (Read and Write Files)
Nesting Streams
Quiz: DataInputStream and DataOutputStream
Compress Number Sequences with the GZIPOutputStream
Serialization
(De)serialize Data for Chat and Convert It to Text
Quiz: Requirement for Serialization
Save Last Inputs
Suggested Solutions
Get the Number of Different Places (Read Files)
Convert Python Program to Java (Write File)
Generate Target Code (Write File)
Convert File Contents to Lowercase (Read and Write File)
Convert PPM Graphics to ASCII Gray Scale
Split Files (Read and Write Files)
Quiz: DataInputStream and DataOutputStream
Compress Number Sequences with the GZIPOutputStream
(De)serialize Data for Chat and Convert Them to Text
Quiz: Requirement for Serialization
Save Last Inputs
Note
9 Network Programming
URL and URLConnection
Download Remote Images via URL
Read Remote Text File from URL
HTTP Client
Top News from Hacker News
Socket and ServerSocket
Implement a Swear Server and a Client
Implement a Port Scanner
Suggested Solutions
Download Remote Images via URL
Read Remote Text File from URL
Top News from Hacker News
Implement a Swear Server and a Client
Implement a Port Scanner
10 Process XML, JSON, and Other Data Formats
XML Processing with Java
Write XML File with Recipe
Check If All Images Have an alt Attribute
Writing Java Objects with JAXB
Read in Jokes and Laugh Heartily
JSON
Hacker News JSON Exploit
Read and Write Editor Configurations as JSON
HTML
Load Wikipedia Images with jsoup
Office Documents
Generate Word Files with Screenshots
Archives
Play Insect Sounds from ZIP Archive
Suggested Solutions
Write XML File with Recipe
Check If All Images Have an alt Attribute
Writing Java Objects with JAXB
Read in Jokes and Laugh Heartily
Hacker News JSON Exploit
Read and Write Editor Configurations as JSON
Load Wikipedia Images with jsoup
Generate Word Files with Screenshots
Play Insect Sounds from ZIP Archive
Note
11 Database Access with JDBC
Database Management Systems
Prepare H2 Database
Database Queries
Query All Registered JDBC Drivers
Build Database and Execute SQL Script
Insert Data into the Database
Insert Data into the Database in Batch Mode
Insert Data with Prepared Statements
Request Data
Interactive Scrolling through the ResultSet
Pirate Repository
Query Column Metadata
Suggested Solutions
Query All Registered JDBC Drivers
Build Database and Execute SQL Script
Insert Data into the Database
Insert Data into the Database in Batch Mode
Insert Data with Prepared Statements
Request Data
Interactive Scrolling through the ResultSet
Pirate Repository
Query Column Metadata
12 Operating System Access
Console
Colored Console Outputs
Properties
Windows, Unix, or macOS?
Unify Command-Line Properties and Properties from Files
Execute External Processes
Read the Battery Status via Windows Management Instrumentation
Suggested Solutions
Colored Console Outputs
Windows, Unix, or macOS?
Unify Command-Line Properties and Properties from Files
Read the Battery Status via Windows Management Instrumentation
13 Reflection, Annotations, and JavaBeans
Reflection API
Create UML Class Diagram with Inheritance Relationships
Create UML Class Diagram with Properties
Generate CSV Files from List Entries
Annotations
Create CSV Documents from Annotated Instance Variables
Suggested Solutions
Create UML Class Diagram with Inheritance Relationships
Create UML Class Diagram with Properties
Generate CSV Files from List Entries
Create CSV Documents from Annotated Instance Variables
Epilogue
Code Golf Stack Exchange
Project Euler
Daily Programmer
Rosetta Code