Use Java's extends keyword to derive a child class from a parent class, invoke parent class constructors and methods, override methods, and more.

When you initialize Java arrays with the new keyword, the size argument is of type int. The 32-bit Java int can go to a maximum of 2,147,483,647, so that is the theoretical maximum Java array size.

New features like var, auto-compile, text blocks, record classes, and more are shifting Java in subtle but powerful ways—toward a more flexible, dynamic future.