It is easier for the average weekend warrior to understand. You may be wondering what OOP means by now. Object Oriented Programming is a relatively new concept, whereas the sum of the parts of a program make up the whole.
Think of it this way: 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 point is that all the parts that made up the engine were of a certain class of parts. They all went together. Ditto with the body and then the interior.
The point is that in these languages, you build objects out of classes of commands to create the whole. Java is a much larger and more complicated language that creates "standalone" applications.
Java must be compiled into what is known as a "machine language" before it can be run on the Web. Basically what happens is after the programmer writes the Java program and checks it for errors, he or she hands the text over to another computer program that changes the text code into a smaller language.
That smaller language is formatted so that it is seen by the computer as a set program with definite beginning and ending points.
Nothing can be added to it and nothing can be subtracted without destroying the program. You write it to an HTML document and it is run through a browser. You can alter it after it runs and run it again and again. Once the Java is compiled, it is set.
Sure, you can go back to the original text and alter it, but then you need to compile again. Java applets run independent of the HTML document that is calling for them and Java is also what runs many appliances and mobile devices, and does not require a web browser.
Sure, they appear on the page, but the HTML document did little more than call for the application and place it. If the programmer allows it, oftentimes parameters can be set by the HTML document.
This course can help marketers and designers upgrade their career and is a starting point for front-end engineers.
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