For clarification, I meant the Algorithms, 4th Edition book at https://algs4.cs.princeton.edu/home/ which is entirely in Java. All the example code, libraries, and exercises there use Java, and the authors explicitly note that the book is written for that language.

However, you are right, Prof. Sedgewick has long maintained versions of his material across multiple languages. I remember that the third edition has C, C++ and Java versions.