Book Image

Java Coding Problems - Second Edition

By : Anghel Leonard
Book Image

Java Coding Problems - Second Edition

By: Anghel Leonard

Overview of this book

The super-fast evolution of the JDK between versions 12 and 21 has made the learning curve of modern Java steeper, and increased the time needed to learn it. This book will make your learning journey quicker and increase your willingness to try Java’s new features by explaining the correct practices and decisions related to complexity, performance, readability, and more. Java Coding Problems takes you through Java’s latest features but doesn’t always advocate the use of new solutions — instead, it focuses on revealing the trade-offs involved in deciding what the best solution is for a certain problem. There are more than two hundred brand new and carefully selected problems in this second edition, chosen to highlight and cover the core everyday challenges of a Java programmer. Apart from providing a comprehensive compendium of problem solutions based on real-world examples, this book will also give you the confidence to answer questions relating to matching particular streams and methods to various problems. By the end of this book you will have gained a strong understanding of Java’s new features and have the confidence to develop and choose the right solutions to your problems.
Table of Contents (16 chapters)
1
Text Blocks, Locales, Numbers, and Math
Free Chapter
2
Objects, Immutability, Switch Expressions, and Pattern Matching
14
Other Books You May Enjoy
15
Index

3. Working with indentation in text blocks

Indentation in text blocks is easy to understand if we have a clear picture of two terms:

  • Incidental (or unessential) white spaces – represent the meaningless white spaces that result from code formatting (leading white spaces commonly added by the IDE) or are added intentionally/accidentally at the end of the text (trailing white spaces)
  • Essential white spaces – represent the white spaces that we explicitly add, which are meaningful for the final string

In Figure 1.3, you can see the incidental versus essential white spaces in a JSON text block:

Figure 1.3.png

Figure 1.3: Incidental versus essential white spaces in a JSON text block

In the left figure, you can see the incidental versus essential white spaces when the closing delimiter is placed at the end of the content. In the middle figure, the closing delimiter was moved to its own line, while in the right figure, we also shifted to the left.

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