Summary

You learned a lot in this chapter. Let's look back at all the topics that we covered.

You downloaded and installed a JDK on your system. Then, you explored it thoroughly by examining its directory structure and looking at its most important commands. You studied how classes are organized in packages. This knowledge proved to be useful when you looked at the Java Class Library. You looked at some fundamental classes from the java.lang package and also studied the important ArrayList and HashMap classes from the java.util package. You wrote, compiled, and ran a simple program on a JVM instance and learned how to modify the ClassPath. Finally, in order to boost your productivity, you downloaded and installed Eclipse IDE.

Congratulations! Now that you have a good grasp of the JVM concepts, you are ready to dive into the world of JVM programming languages. Let's start with the language that started it all: Java.