In this chapter, you learned about Java projects, and how to set them up and use them for writing your application code and unit tests. You also learned how to build and how to execute application code and unit tests. Basically, that is what a Java programmer does most of the time. In the rest of the book, you will gain more detailed knowledge of the Java language, the standard libraries, and third-party libraries and frameworks.
In the next chapter, we will dive deeper into Java language elements and types, including int, String, and arrays. You will also learn what an identifier is and how to use it as a variable's name, as well as information about Java-reserved keywords and comments.