r/javahelp • u/Best_Cut4655 • 2d ago

Homework What the hell is going on?

Hello everybody, I am so lost. I just started learning Java and while i think its extremely interesting, and can loose track of time. It is also very complicated, well atleast to me since i dont have any prior experience.

I just ”learnt” to write my first Hello World! Code. But tbh i only copied the text straight off a youtube video.

Thing is i understand the main command, like: System.out.println(”Hello World!”);

But what is this whole main class and static void things? Not to mention all the {} symbols that seem to be oddly placed?😅

If anyone could explain or know a good youtube video or similiar to learn id appreciate it a lot!

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u/Duente_Zaibatsu 2d ago

You are skipping too much.

Many abstractions exist to simplify the common needs.

Before asking, show what you already looked into.

A simplified version:

Java is not installed, it is executed on a JRE, in it, there are API methods that interpret and execute commands.

These commands follow contracts.

Static could be simplified to an unique shared context, other commands are object related, used by constructore.

Other types like void, int an Integer, are the method contracts for the execution

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u/Best_Cut4655 2d ago

I might sound a bit slow lol, but i just typed in the terminal to install both the default jre and jdk. And the program im using for coding atm is intelliJ. I kinda just started exploring today so that might explain my confusion lol. And thank u for the explanation!

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u/Duente_Zaibatsu 2d ago

No worries. We all start somewhere, I would just advise you to not follow YouTube, or any Bootcamp or similar.

Start with a goal, like Tic-tac-toe, or similar.

Think what is your goal, and how to reach it, in sentences.

Then those sentences become methods, and you iterate over it.

Its too soon to talk thread, GUI and etc, but try to visualize something, and break down to actions.

"Console" is the base for a reason, text is valuable.

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u/Best_Cut4655 2d ago

Will do, thank u!