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  • Welcome and FAQ

  • Chris

    Moderator
    March 4, 2021 at 1:33 pm

    Hello and welcome to everyone, thanks for taking the time to sign up for Introduction to Coding with Java.

    Included in this post are instructions on how to setup and use Jdoodle, the online coding IDE we will be using during this course. For the more adventurous I will also include the link and setup instructions for Eclipse IDE, a professional coding environment.

    Have fun and happy coding!
    Chris

    —————————————–

    Jdoodle online IDE
    https://www.jdoodle.com/online-java-compiler-ide/

    Interface and Buttons

    Always set the IDE to interactive by left clicking the switch below the main code window, and moving the button over to the right side.

    Blue execute button runs your currently selected program.

    File icon button next to execute opens a file upload window to load your saved projects.

    3 dots button opens an options menu from the right side of the screen, Left click X to close the menu.

    Box icon button changes the window layout to a vertical orientation.

    Save a project

    – Left click the 3 dots next to the red house icon, select Rename from the dropdown menu
    – Change the name of the default MyClass.java to a name of your choice (e.g. Housepainter.java)
    – Left click the green tick to confirm your change
    – Inside the main code window change public class MyClass to the name you have chosen (e.g. public class Housepainter)
    – Left click 3 dots next to the folder in the left pane
    – Select Download from the dropdown menu
    – Open Downloads folder on your computer and locate the zip file (projecet.zip)
    – Create a folder on your computer called Jdoodle projects
    – Open zip file and move the folder inside to the Jdoodle projects folder
    – Change the name of the folder you moved to a name which describes your program

    Load a project

    – Left click 3 dots next to the folder in the left pane
    – Select Upload File from the dropdown menu
    – Navigate to your Jdoodle projects folder and left click the appropriate project folder
    – Select the java file (e.g. Housepainter.java) and left click Open
    – The java file will appear in the left pane
    – In order to execute this program we must make it the Start File
    – Left click 3 dots next to the java file and select Make it as Start File from the dropdown menu
    – The icon will change from a page to a red house
    – Left click java file and make sure the name matches the public class in the main code window
    – e.g. Housepainter.java must match public class Housepainter etc.

    —————————————–

    Eclipse IDE
    https://www.eclipse.org/ide/

    64 bit Java 1.8.0 VM
    Oracle JDK 13
    Windows x64 installer
    Install JDK 13 first, then Eclipse Win x64
    Select Eclipse IDE for Java Developers
    Select default project directory
    Create a new Java project
    Give project a NAME (Java Course) and select Use Default Location
    Don’t enter a module name, click Don’t create
    Workbench opens, left click Course to open drop down
    Right click on src and select New package
    Change name to Week1 (no space), click Finish
    Right click on Week1 select New Class
    Change Name to Main, and select public, static void and Finish

    Setting the PATH Environment Variable – (if needed)
    It is useful to set the PATH variable permanently for JDK 13 so that it is persistent after rebooting.
    If you do not set the PATH variable, then you must specify the full path to the executable file every
    time that you run it. For example:
    C:\> “C:\Program Files\Java\jdk-13\bin\javac” MyClass.java
    To set the PATH variable permanently, add the full path of the jdk-13\bin directory to the PATH
    variable. Typically, the full path is:
    C:\Program Files\Java\jdk-13\bin
    To set the PATH variable on Microsoft Windows:
    1.Select Control Panel and then System.
    2.Click Advanced and then Environment Variables.
    3.Add the location of the bin folder of the JDK installation to the PATH variable in System
    Variables.
    The following is a typical value for the PATH variable:
    C:\WINDOWS\system32;C:\WINDOWS;”C:\Program Files\Java\jdk-13\bin”

  • Edward

    Member
    March 26, 2021 at 3:26 pm

    just wanted to know when the next class or module will be out

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