Java. Solving Practical Tasks

The tasks encountered in the everyday work of any developer in the Java environment are considered. More than 300 applications containing over 1000 examples are provided. Effective practical techniques and technical solutions are demonstrated, taking into account code complexity, performance,... readability, and much more. Strings, numbers, objects, arrays, collections, and data structures are discussed, as well as working with dates and times. Tasks on logical type inference, as well as file input/output, are presented. Tasks related to the Java reflection API are introduced. Special attention is given to functional programming, tasks involving concurrency, rules for working with the Optional class, as well as the HTTP client API and the WebSocket protocol API.