Can you learn everything from a book?

Question

Java

I'm reading Horstmann, I'm finishing the first volume. I had a question, do I need to thoroughly study all the topics? will the result be fixed in practice?

Answer 1

Programming books don't teach. They are simply put on the table and when some problem arises, they open and read the necessary sections. Just skim the surface.

Answer 2

Collection is an important topic, you need to know when to use which. It is necessary to study everything in practice, and not by memorization somehow. You need to understand the main ideas and remember "anchors", clues that will help you remember which way to dig, if necessary in practice. It is necessary not just to read, but to follow the examples, to change something in them. In parallel, write your application and think about how it can be used in practice. You can go the other way - solve the problem and, as you encounter problems, look for their solutions in books, the Internet, and so on.