I am using eclipse for the first time in a few weeks and when I try to create a new project it is being marked as a test and gives me an error when I create a main method.
I have been using eclipse for a while and this error happened once previously. I solved it by messing around with a bunch of settings in properties/preferences and reinstalling eclipse but I would really appreciate help finding an easier way to fix this.
Here is the main method that I have. I am not really concerned about the error with the main method, more so with why the projects have [test] when I create them.
Not sure if this helps, but when I go to create a project this is the first instance of the [test]
Related
I have had this problem for years and years now where Eclipse would sometimes, seemingly for no reason, throw this error:
Error: Could not find or load main class [main-class] Caused by: java.lang.ClassNotFoundException: [main-class]
This error fires despite the class being in the file system and having previously worked with no flaws. Project clean does not fix it, and the filepath is completely valid. Consequent Google Searches usually turn up recommending that it's one of those two problems, or that you have to completely delete the project, or create a new workspace - so on.
I'm not sure what the exact cause of this problem is, and I haven't ever really been able to find one neither. However I had found a relatively simple fix for correcting it.
To fix this problem, what I've learned is that for some reason it tends to be Run Configuration itself. What you can do is:
Click "Run" in the toolbar
Click "Debug Configurations"
Create a new Run Configuration (However, don't just copy and paste the old one - for some reason this doesn't always fix the problem for me)
Set it up appropriately for the class, you can however copy the parameters from the old
Save and use that as the new run configuration for your program
This has generally fixed the problem for me most times. Hopefully someday Eclipse will have this properly fixed.
My current Eclipse version is 2021-12 (4.22.0)
I don't know if I did this self-answered question thing correctly, but for those of you who are banging your heads against your keyboard on Google right now trying to fix this, I hope this helps.
So I was making a java program in Netbeans IDE 8.2 and when I tried to run it, I got this error:
Error: Could not find or load main class helloworld.HelloWorld
C:\Users\name\AppData\Local\NetBeans\Cache\8.2\executor-snippets\run.xml:53: Java returned: 1
BUILD FAILED (total time: 1 second)
(Assume that helloworld is my project name and HelloWorld is my class name)
Everything was fine before, and I can't think of what I did that would cause this error to happen. This is the first time this error has happened to me so I don't know what to do. The code doesn't seem to have any errors.
Other projects of mine seemed to also have the exact same problem even though I haven't opened or edited them in weeks prior to this error occurring.
I tried many other ways but none of them seems to do the trick. Including deleting the cache folder and setting the main class through the properties tab.
Here's a screenshot of my code with the error, my name is crossed out:
Even if I type my code directly in the main class, which is class6homework.java, the error still occurs but it says class6homework.class6homework instead of the one in the screenshot.
Any ideas on how I could fix this?
UPDATE: I got it to work by moving the folder that contains the project to my desktop, didn't know why it wouldn't work in my original location. Thanks for the help.
Perhaps you don't have the main method included. If that is not the problem, try right clicking your class in the project tree and look for an option that says "Set as main class" or something like that
Possible Fixes:
Fix 1
Go to project properties (right click on the folder of your project in netbeans)
On left tab where it shows the categories, click on the "Run" selection
Then click on Browse to find the Main class you use on your project
Fix 2
Go to C:\Users\name\AppData\Local\Netbeans
delete the Cache folder.
Rebuild and Run
Fix 3
Download most recent version of Netbeans
Fix 4
Download most recent version of JDK and configure Netbeans to use that
I am new to Java and started with Eclipse Kepler Service Release 1. I started a small project that contains two classes, each in its own file:
MIDI_Wrap_Test - a main (program) class
MIDI_Wrap - another class (MIDI_Wrap) which is intended as a MIDI wrapper. -
Both classes are in the same directory with file names being the same as the class name (with .java added of course). Something goes wrong and I want to debug it. However, when control transfers from the main program to the MIDI_Wrap file/class I get the error message 'source not found'.
I found out that this is a quite common error. The question and answer that seem to mirror my problem perfectly is found here. I added the project to the debug source path, noticing that the correct directories were already added but to no avail.
I must be doing something wrong but am not able to find out what. Can someone help me out of this?
I solved by shutting down eclipse and reopened it. This solved me, and code can be debug with source code view.
I've searched in previous posts but cant seem to find the solution, my code worked perfectly until i did something wrong , and now i get "Error: Could not find or load main class gaming.Game"
I think i might have deleted something in the eclipse configurations, How can i solve this?
Your title's error does not match the one you wrote in your question.
The "simon.Game" says that the Game class is in a package called simon. The other error you posted says that it's inside gaming package. This is important.
You can go into eclipse's run configuration and point to the correct class that has the main method.
With eclipse, it is sometimes necessary to remove a project and re-import it in order to solve problems like this. When removing the project, be sure not to leave "delete project contents on disk" checked.
Error: Could not find or load main class jewelleryerpapplication.GUI.ERPMainMenu
Java Result: 1
Actually i am using Net Beans 7.1 and in that i am continuosly getting the same error but un able to get the solution for that even after installing the latest update for that. The solution which i got from some body that create new project and copy the source and library foldes in that Project from the previous which generate the above error. this solution works for me but i need some simpler solution for this problem.Lot of thanks in advance.
Don't Forget To Give UpVote It If It Helps.
Right click on project node, go to Set configuration, select the main class for your application. Then clean and build.
Even if this doesn't solve your problem, then delete the Netbeans cache by deleting the (index) folder
User\.netbeans\6.9\var\cache\index\
I think that the following is happening:
If this is a third party application, you have not included some jar files on your class path;
Or, (which in my opinion is the most likely) you do not have a method which has this signature: public static void main(String[] args). This method defines the main entry point for your application, not having it might cause that error when you try and run the project. To my knowledge, Netbeans creates a main class with such a method automatically whenever you create a new project. This might be the reason why you are not having this exception when you create a new Project and throw everything in it.
You might be having an issue with Netbeans itself. You can start by either checkin gout this previous SO thread in which a similar (I think) issue is being discussed, or else, as a final resort, you might want to remove Netbeans and all its files, and install an earlier version. You can also try and see if you get the same issue if you use a different IDE such as Eclipse.
the solution is,right click your package in netbeans,go to properties,source now go to the jre option and choose your version,the programme will now run.