Update "Think Java: How to Think Like a Computer Scientist" (#5297)

* Add the 2nd Edition.
* Update the 1st Edition:
  * Replace the obsolete link with the current link.
  * Add the Interactive version link.

books/free-programming-books.md

@@ -1689,7 +1689,8 @@ Kerridge (PDF) (email address *requested*, not required)
 * [The Java Tutorials](https://docs.oracle.com/javase/tutorial/index.html)
 * [The Java Web Scraping Handbook](https://www.scrapingbee.com/java-webscraping-book) - Kevin Sahin (PDF, HTML)
 * [Think Data Structures: Algorithms and Information Retrieval in Java](https://greenteapress.com/wp/think-data-structures/) - Allen B. Downey (PDF, HTML)
-* [Think Java: How to Think Like a Computer Scientist](http://greenteapress.com/thinkapjava/) - Allen B. Downey and Chris Mayfield
+* [Think Java: How to Think Like a Computer Scientist, 2nd Edition](https://greenteapress.com/wp/think-java-2e/) - Allen B. Downey and Chris Mayfield (HTML, PDF) [(Interactive version by Trinket)](https://books.trinket.io/thinkjava2/)
+  * [Think Java: How to Think Like a Computer Scientist](https://greenteapress.com/wp/think-java/) - Allen B. Downey and Chris Mayfield (HTML, PDF) [(Interactive version by Trinket)](https://books.trinket.io/thinkjava/)
 * [Welcome to Java for Python Programmers](https://runestone.academy/runestone/books/published/java4python/index.html) - Brad Miller
 * [Welcome to the Java Workshop (2006)](http://javaworkshop.sourceforge.net) - Trevor Miller
 * [What’s New in Java 8](https://leanpub.com/whatsnewinjava8/read) - Adam L. Davis