Hey, welcome to lesson 2 of Java 101, if you missed lesson 1, you can check it out here, now that you’ve got the necessary tools for making some java code we will start by doing the all time classic “Hello world” but  you’ll need to know some things first:

For starters you will need to create a project, in NetBeans go to File and select New Project, After that select Java and then Java Application, just like the picture (The process is similar in all IDE’s)

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After that fill the Project name and you are ready to go (By leaving the Create Main class box checked you are doing yourself a favor, just for now though)

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Now you will have something like this, this is you coding environment, you’ll get used to it soon (Note: Maybe you have a package line at the beginning, just ignore this line and move on)

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Ok, now, public class Main is like the project itself, as the name says is the main class, you’ll be writing your code here for now.

The  public static void main(String[] args) class is like the test class, if you want to try something you’ll need to post it here.

We want to write the “Hello World” lines, so, if you want to write something in Java you can use the following sintaxys:

System.out.print(”What you want to write”); (Note: This “command” will leave the cursor at the same line, so if you write something next it will be written in the same line)

Or

System.out.println(”What you want to write”); (Note: This “command” will take the cursor a line down, so if you write something after this it will be written in a different line)

We can use either of them for this simple code, and because of the simplicity of the program just write directly in the public static void main class.

So your program should look like this:

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Now click in the “Play” button (As the arrow is pointing) and your output box should look like this

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Ok, you just made you first java program , its kind of stupid I know, but just keep reading the lessons and you will learn usefull things.

Don’t miss the next lesson, you can subscribe if you want to, but I don’t think you want… yet.