Problems running Java from Atom

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I currently don't have a working way to edit and run Java on my computer, so I'm trying to get Atom working with Java (I realize it's not a Java IDE and I'm not trying to make it one, I just want to be able to do some light Java work on my laptop). I've installed the script and instant-build packages for Atom and wrote the following test code in a file called "main.java' in my project folder:

class Main{
  public static void main(String[] args) {
    System.out.println("please");
  }
}

When I try to run the code with cmd+i (I'm on a 2012 MacBook Pro) and get the following error message:Error: Could not find or load main class main.

I'd be happy to provide any further information; thanks for helping!


You have to name your file with the first letter in upper case Main.java, since it must match the name of your class

How to run java programs in Atom editor - support, If it is too much trouble to run Java in the Atom editor I can always just use execute Java, then you should bring up the issue with the package authors. Sometimes a corrupted file in the Java cache can prevent an application from running. You can safely delete the temporary files that Java downloads since Java will download them again and ensure they are up-to-date. » Clear the Java cache Check Antivirus or Firewall settings related to Java


I replicated the issue quite easily. If I created a new directory in Atom itself and then tried to run the code it didn't work as your error message came up for me as well. Error: Could not find or load main class main.

I used an existing directory and then created a file inside that folder in Atom and ran the same code it worked. I then copied and pasted that same file into the directory of my choice and it worked.

Noob issues in Atom (Mac) running Java : Atom, Hello I want to run Java programs in the Atom editor. the docs ask you to do and you should bring that up as an issue with the maintainers of the package. how to run java in atom mac javac' is not recognized as an internal or external command operable program or batch file. atom how to run code in atom github atom java java debugger for atom best


The huge problem of learning Java is that you need to launch the projects in a very strict way, and setting the classpath is always problematic. The solution lays in the following (pretty enigmatic) line of the "Script" documentation:

Project directory should be the source directory; subfolders imply packaging.

So, instead of opening a plain file, open the project (folder) with .java classes or define inside the file, the package to which your .java belong.

It's due to the fact that JDE needs to create a virtual target in form of .classess and single .java file definitely can't be launched as standalone file. I suppose that "Script" is not able to locate the source folder when you try to execute seperate .java file.

Before launching your .java files always "Add Project Folder..."

Please remember that it's not possible to have several folders opened if they don't belong to the same project. Such situation cause problems of locating the right classpath and in the end javac prompts the error.

Cannot save Java-files when languageserver is running · Issue , Hello, I am just starting to code in Java. I decided to download Atom as it is very recommended. (I am using a mac) I downloaded script to be able to run. I set up  Look for a package named "script" (run code in Atom) in the search result and click on install button in the result pane. 7. Once the package is installed, create a Java file and click Ctrl+Shift+B to run it. GitHub Desktop is a mandatory prerequisite for Window


Issues · atom/ide-java · GitHub, atom , to no effect. I think this is the proper project for this issue, since this is the project that includes the vscode-languageserver-protocol  Always feel free to help out! Whether it's filing bugs and feature requests or working on some of the open issues, Atom's contributing guide will help get you started while the guide for contributing to packages has some extra information. License. MIT License. See the license for more details.


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Problems running Java from Atom, Java autocomplete-plus provider for Atom editor. The package requires compiled classes to function, but it does not compile classes from See issue #​19. If you are just starting out learning Java, here is a basic guide to help you start running the Java application from the command prompt (in Windows). Installing the Java Development Kit (JDK) Before you can run a Java program on your computer, you’ll need a Java compiler installed. That comes with the Java Development Kit, or JDK.