Java for Fucking Idiots: Learn the Basics of Java Programming Without any experience!

Machine Language: The extremely specific instructions to a computer’s
CPU that tells it how to process the 0s and 1s, perform mathematical
operations, and that kind of confusing shit.
Assembly Language: A type of language that’s a little bit more
understandable than machine language. An assembly language creates the

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machine language, on our behalf, for a particular CPU architecture. It’s
basically shorthand for the machine language. Stay away.
Programming Language: The languages that humans in the modern-day
use to write software. Like assembly language, it compiles to the right type
of machine code based on the type of Processor you’re targeting.
But rather than being an obtuse, impossible to understand piece of garbage
like Assembly Language (seriously, google it), we get to use relatively easy
to write and comprehend programming language. The programming
language’s compiler takes care of getting us down to machine code!
Java’s selling point
Java programmers don’t need to worry about writing for a Dell, or an HP, or
a MacBook computer. They write for a make-believe computer called the
Java Virtual Machine (JVM).
The JVM acts as basically the ultimate translator for us; it can speak the
machine language for pretty much any kind of processor. We just give it the
compiled Java code, and it takes care of the rest.
So, Java is a programming language that replaces the practice of “compiling
to machine language” with “compiling to Java Virtual Machine language.”
What is compiled Java code then, if it’s not machine code? I mean, what
language does the Java Virtual Machine (JVM) understand?
It’s called bytecode . Any source code you write in Java that wants to run on
the Java Virtual Machine needs to be compiled to “bytecode” first.
No, you don’t need to worry about what bytecode actually is. It’s just the
result of compiling a Java program. C++ might compile to machine code,
but Java is compiled to bytecode.
So, it be like this:
1. You write source code in Java.
2. The Java Compiler “compiles” or translates the source code to
bytecode .

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3. The Java Virtual Machine (JVM) running on your computer
executes that bytecode .
4. That same bytecode can run on a billion different computers as long
as they have the JVM.
Got it?
If you do not get it, please mail me a letter: 1600 Pennsylvania Ave NW,
Washington, DC 20500.
(Note: this is not my real address).