Java cannot be understood by looking at it only as a collection of some characteristics - it is necessary to understand the problems of this language as specific problems of programming as a whole. This book is about programming problems: why they became problems and what approach Java takes in solving them. Therefore, the features of the language discussed in each chapter are inextricably linked with how they are used to solve certain problems. This book, which went through several reprints in the original, is considered one of the best textbooks for Java programmers for its deep and truly philosophical presentation of the intricacies of the language.