Читать книгу OCP Oracle Certified Professional Java SE 17 Developer Study Guide - Jeanne Boyarsky - Страница 33

Although some people can learn Java just by reading a textbook, that's not how we recommend that you study for a certification exam. We want you to be writing your own Java sample applications throughout this book so that you don't just learn the material but understand the material as well. For example, it may not be obvious why the following line of code does not compile, but if you try to compile it yourself, the Java compiler tells you the problem:

float value = 102.0; // DOES NOT COMPILE

A lot of people post the question “Why doesn't this code compile?” on the CodeRanch.com forum. If you're stuck or just curious about a behavior in Java, we encourage you to post to the forum. There are a lot of nice people in the Java community standing by to help you.