In this chapter, you learned what Java is and saw its features. We saw the expanse of Java's application by looking at the various fields it is used in.
We walked through the steps to install a Java Development Kit. We then set up a development environment called NetBeans for writing Java programs and executing them. We saw how to use NetBeans and wrote our first Java program in it. Next, we saw how to use NetBeans' ability to detect errors for rectifying them.
In the next chapter, we'll look at the various Java data types and how to work with variables.