The Java Tutorials have been written for JDK 8. Examples and practices described in this page don't take advantage of improvements introduced in later releases and might use technology no longer available.
SeeDev.java for updated tutorials taking advantage of the latest releases.
SeeJava Language Changes for a summary of updated language features in Java SE 9 and subsequent releases.
SeeJDK Release Notes for information about new features, enhancements, and removed or deprecated options for all JDK releases.

More on Classes

This section covers more aspects of classes that depend on using object references and thedot operator that you learned about in the preceding sections on objects:

• Returning values from methods.
• Thethis keyword.
• Class vs. instance members.
• Access control.