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javaintellij-idea

IntelliJ IDEA is not recognizing my java files as runnable and instead wants to run the class files. Any ideas of how to fix?

Anytime I try to run a java file by clicking run, it instead tries to run the class file and thus gives a no main method error.

When I try to right click on a java file and run that, it doesn't recogize it as a file that is runable.

I am still able to run programs from the command prompt but I would prefer to be able to run them in IntelliJ.

This occurred after trying to create a Class path when using JSon Libraries.

Edit:

Normally it shows java files with this icon: enter image description here

But instead it's showing this icon for java files: enter image description here

I think the change in icon might have something to do with it.

Edit 2: the exact error I get is "C:\Program Files (x86)\Java\jdk1.8.0_181\bin\java.exe"...bunch of other program file locations

Error: Could not find or load main class sample.Main

Process finished with exit code 1

Solution

  • I had the same problem and found out that my src wasn't marked as Sources Root. To change this:

    • right-mouse click on your src
    • navigate to "Mark Directory As"
    • choose "Sources Root" It will now recognize your files correctly and your main classes will be able to run again

    IntelliJ not recognizing my .java-files:

    Problem solved: