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- - - - - - - Java Setup for Windows - - -

Java Setup - Windows

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Table of contents

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  1. - Installing Java -
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    1. - Downloading the JDK -
      2. -
    2. - Setting up your environment -
      3. -
    -
    2. -
  2. - Setting up IntelliJ Community Edition -
      -
    1. - Why IntelliJ -
      2. -
    2. - Downloading -
      3. -
    -
    3. -
  3. - Using IntelliJ -
      -
    1. - Creating a project -
      2. -
    2. - Creating a class -
      3. -
    3. - Running your program -
      4. -
    4. - Debugging your program -
      5. -
    -
    4. -
  4. - Help -
    5. -
-
-
-

Installing Java

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To install Java you need to install the Java Development Kit (JDK). It - can be downloaded from here: https://jdk.java.net/13

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You will want to select the zip download for Windows.
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- Hover to zoom

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After downloading the zip you will want to unzip it (into a folder, - should by default) and then copy that folder into C:\Program Files\Java\


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- Hover to zoom -

When I did this myself, it unzipped into a folder jdk-13.0.1. By the end you should have the following folder - structure: C:\Program Files\Java\jdk-13.0.1

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Setting up your environment

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In order to make the JDK discoverable by your programs you need to add - the JDK folder to your PATH environment varible. This is best done by first - setting up a varible for the java directory JAVA_HOME that points directly to the directory you copied - the unzipped files into.


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- Hover to zoom -

Once you've setup the JAVA_HOME variable - you can add that varible to your PATH point to the subdirectory - /bin. This can be confusing if you haven't - done this before. - Here is a StackOverflow article how to add environments variables in - Java 10.


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- Hover to zoom -

Optionally, if you want to test that this worked, you can open up the - command prompt (or powershell) by opening the start menu and typing/looking - for cmd.exe. Then you can type java -version - which will output the version and some additional information. You should - see java version 13.0.1.

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IntelliJ Community Edition

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I recommend using IntelliJ Community Edition instead of Eclipse. - They're both open source but I use IntelliJ at my job daily and its a - fantastic, out of the box editor. Where Eclipse requires a lot more setup - steps and plugins to get it to be "complete". Feature wise they - do the same things, so everything they do in Udemy via Eclipse should work - in IntelliJ.

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Downloading

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To Download go to www.jetbrians.com/idea/download - and click the Exe download for community edition.


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- Hover to zoom -

Once the download is complete you can run the installer. You should - select your theme, then just use the "Install defaults" option at - the bottom, or just Next through the rest of setup, as you shouldn't - need any additional plugins. And if you do they all can be installed - later

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You're Done! You can start Udemy now just ignoring their - install/setup instructions. I have some additional steps below to help - verify everything works and do some basic operatoins in IntelliJ (Create a - Project, Create a class, Run/Debug) but you can refer back to here once you - get there in Udemy

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Using IntelliJ

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Jetbrains actually has a whole - FAQ/Tutorial section that can help you with any questions too. But here - is a brief overview of the core functions of IntelliJ

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Creating a project

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When you first open IntelliJ it shows a splash screen where you can open - an existing project or create a new one. You will at first want to create a - new project.


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- Hover to zoom -

You want to choose a java (the default) and select the version of the - JDK (should default to 13.0.1, if not click browse and navigate to the - folder you copied it to from the first step: C:\Program Files\Java\jdk-13.0.1.


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- Hover to zoom -

Then you can name the project and choose the directory you want to files - in.


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- Hover to zoom -

Now you should have a project setup that you can create your program - in!


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- Hover to zoom -

Creating a class

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To create a class in IntelliJ you should expand the projects menu on th - left side and right click the src folder. You - then select "create class". This will add it directly into your - src folder.


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- Hover to zoom -

From here you can start writing code!


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- Hover to zoom -

Running a Program

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Java code is executed from the main method public - static void main(String[] args). You can run your main method by - either right clicking within it and selecting run. Or when the file - containing your main method is open using the Run button at the top right - of the editor.


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- Hover to zoom -

Debugging a Program

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To debug you can set breakpoints in your code by selecting the left hand - side by the line numbers. This will add a red dot which tells the program - to pause executing when it reaches the code at that line. To do this you - need to run in debug mode (rather than plain run mode) by right clicking - your main method and choosing Debug, or by using the debug icon at the top - right of the editor window.


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- Hover to zoom -

Additional Help

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If you need any help at all feel free to text or email. If its a code - issue, either a screenshot of the code or the code itself will help!

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- - diff --git a/www/version.txt b/www/version.txt deleted file mode 100644 index e1dd790..0000000 --- a/www/version.txt +++ /dev/null @@ -1 +0,0 @@ -Deployed on: 2020-02-17T05:42:37+00:00 -- cgit v1.2.3-54-g00ecf