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Java Coding Problems - Second Edition

You're reading from  Java Coding Problems - Second Edition

Product type Book
Published in Mar 2024
Publisher Packt
ISBN-13 9781837633944
Pages 798 pages
Edition 2nd Edition
Languages
Author (1):
Anghel Leonard Anghel Leonard
Profile icon Anghel Leonard

Table of Contents (16) Chapters

Preface 1. Text Blocks, Locales, Numbers, and Math 2. Objects, Immutability, Switch Expressions, and Pattern Matching 3. Working with Date and Time 4. Records and Record Patterns 5. Arrays, Collections, and Data Structures 6. Java I/O: Context-Specific Deserialization Filters 7. Foreign (Function) Memory API 8. Sealed and Hidden Classes 9. Functional Style Programming – Extending APIs 10. Concurrency – Virtual Threads and Structured Concurrency 11. Concurrency ‒ Virtual Threads and Structured Concurrency: Diving Deeper 12. Garbage Collectors and Dynamic CDS Archives 13. Socket API and Simple Web Server 14. Other Books You May Enjoy
15. Index

5. Using text blocks just for readability

Using text blocks just for readability can be translated as making a string look like a text block but act as a single-line string literal. This is especially useful for formatting long lines of text. For instance, we may want to have the following SQL string look like a text block (for readability purposes) but act as a single-line string literal (in the sense of being compact when we pass it to the database):

SELECT "public"."employee"."first_name"
FROM "public"."employee" 
WHERE "public"."employee"."job_title" = ?

Starting with JDK 14, we can accomplish this goal via the new escape sequence, \ (a single backslash). By adding this escape sequence at the end of a line, we instruct the compiler to suppress appending a new line character to that line. So in our case, we can express the SQL as a single-line string literal, as follows:

String sql = "...
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