It might be daunting. Newer resources may be better for learning modern syntax first.
Readers frequently praise the Collections chapter as superb. The coverage of Concurrency and Generics is also noted for going deep beneath the surface. Thinking In Java 4th Edition
If you want to understand why Java works the way it does, it’s still an "order of magnitude" better than standard manuals. It might be daunting
Heavily features Java 5/6; lacks modern features like Lambdas or Streams. Thinking In Java 4th Edition
If you tell me your or if you're looking for modern features (like Spring Boot or Cloud integration), I can suggest a more targeted reading list or specific chapters to focus on.