Which java book has a normal explanation of the classes and methods of the java.lang package?

Question

Java

I recently started learning Java. I began to think, like everyone else, according to everyone's advice, from Schildt's book.
Started with a complete guide. I read the first part, it seems like I learned a little something. But it was clear that I didn’t understand anything. I decided to read the same chapters of his own book, only for beginners. I read it, it was not like in a dry reference book + there were tasks at the end of the chapters. Therefore, I figured it out much better than after the first book.
In general, it's time to study further. Returned to the book "The Complete Guide". A whole chapter about java.lang. All interfaces, classes and their methods. But this is kind of hell. Just a canvas of lists of methods, a brief description of a couple of sentences, classes and that's it. In general, it is not clear what is what and why, how and in what cases all this should be applied. Just a dry reference book, practically without any examples, not to mention tasks for self-examination.
In general, versed in java, tell me a book (in Russian), in which everything about the java.lang package, about all these classes, wrappers, interfaces and methods with examples and preferably with tasks, would be more or less accessible. (at least just with an explanation of how to use it all) I
looked in the first five books I probably got, there are no chapters about java.lang anywhere
. Thanks in advance.

Answer 1

Why do you need to memorize all this? It's enough just to have an idea of ​​what's out there. Over time, what you need will be remembered.

Answer 2

Java API only , hardcore only.
Without practice, it makes no sense for a beginner Schildt to read at all. It can be used as a reference when you need to remember something. Without practice, you won't learn anything.

Answer 3

Try Eckel or Horstmann. It's kind of a classic too.