Java is a Object-Oriented Programming language (OOP). So what is OOP language?  The characteristic of OOP language is the sum of the parts of a program make up the whole. I use building a car model for example. You build the engine first. It can stand alone. It is an engine and everyone can see it's an engine. Next you build the body. It can also stand alone. Finally, you build the interior including the seats, steering wheel, and whatnot. Each, by itself is a object. But it is not a fully functioning car until all the pieces are put together. The sum of the objects (parts) make up the whole.

The point is that in these languages, you build objects out of classes of commands to create the whole. That's the terminology of OOP language. That all I know and learn about OOP language today.

References:
http://www.htmlgoodies.com/beyond/javascript/article.php/3470971/Java-vs-JavaScript.htm
http://en.wikipedia.org/wiki/Object-oriented_programming