slopfront
Reddit, read-only. No JavaScript. No cookies. No tracking.
preferences
Saved in links, not cookies.

READ THIS if TMCBeans is not starting!

48 points · submitted Sep 2023 by u/desrtfx · archived

We frequently receive posts about TMCBeans - the specific Netbeans version for the MOOC Java Programming from the University of Helsinki - not starting.

Generally all of them boil to a single cause of error: wrong JDK version installed.

The MOOC requires JDK 11.

The terminology on the Java and NetBeans installation guide page is a bit misleading:

Download AdoptOpenJDK11, open development environment for Java 11, from https://adoptopenjdk.net.

Select OpenJDK 11 (LTS) and HotSpot. Then click "Latest release" to download Java.

First, AdoptOpenJDK has a new page: Adoptium.org and second, the "latest release" is misleading.

When the MOOC talks about latest release they do not mean the newest JDK (which at the time of writing this article is JDK17 Temurin) but the latest update of the JDK 11 release, which can be found for all OS here: https://adoptium.net/temurin/releases/?version=11

Please, only install the version from the page linked directly above this line - this is the version that will work.

This should solve your problems with TMCBeans not running.

33 comments · 98% upvoted · other discussions

comments

Read-only. Use the arrows to collapse threads.

[deleted] 5 points · Sep 2023

[deleted]

[deleted] 1 points · Oct 2023

[deleted]

purple_cape 1 points · Nov 2023

Same. First I didn’t download the correct JDK. So even once I downloaded JDK 11 it was trying to open it with 21. This saved me

KirbySmashYeet 1 points · Nov 2023

click into Contents > Resources > tmcbeans > etc

My main issue is that I cannot find this on Linux mint

KirbySmashYeet 1 points · Nov 2023

I found it, the problem is that I cant modify it, even with nano as it is in a read only file directory.

Any suggestions?

Korsica26 1 points · Nov 2023

Thanks a lot! I forgot to remove the # after changing the path before. It finally worked now, thanks again.

[deleted] 1 points · Dec 2023

this worked perfect.

canthumanright 1 points · Feb 2024

Thank you, finally able to start the Java course!

Brightwing 1 points · Feb 2024

Thanks, was about to do the udemy course when i found this post :)

faux_papaya_fish 1 points · Feb 2024

Thank you so much! This is what I was missing.

A2Z786 3 points · Sep 2023

I managed to run it a few weeks ago but I was getting the similar visual glitch reported here. I cleared everything and installed it again but faced the same issue. Then, I started using VS Code without any trouble.

jerm1698 1 points · Sep 2023

Tried this but still could not get TMCBeans to run.

desrtfx [OP] 1 points · Sep 2023

Have you made sure that the system path (java-home) points to the right JDK (JDK 11)?

If you have multiple JDKs installed, the path might point to the wrong one.

jerm1698 1 points · Sep 2023

Intellij works fine but cant open up TMC set the system settings. It will not opn at all.

desrtfx [OP] 1 points · Sep 2023

You have not answered my question.

annoyingemptiness 1 points · Sep 2023

Hello, I have, probably, multiple JDKs installed(because i installed the wrong one first) how do i change the system path (java-home) to point to the right JDK (JDK 11)?

thePhoenixYash 1 points · Jan 2024

How?

walrusdog32 1 points · Sep 2023

It still doesn’t work. The only Java on my mac is JDK 11 From your link

I deleted and reinstalled TMC Beans and reset my computer

[deleted] 1 points · Sep 2023

[deleted]

walrusdog32 1 points · Sep 2023

thank you so much

yokyopeli09 1 points · Sep 2023

I've done this but when trying to pull up TMCBeans it says "Cannot find Java 1.8 or higher".

Radamenenthil 1 points · Jan 2024

did you ever get to fix this?

yokyopeli09 1 points · Jan 2024

Nope, I gave up.

Radamenenthil 1 points · Jan 2024

:C

ObiFlanKenobi 1 points · Sep 2023

I got TMC to work on Netbeans AND VSCode, but overnight it stopped working in VSCode, tried reinstalling but it didn't fix the issue.

Any ideas?

I'm on Windows 11 Home and the version of Java says "Eclipse Temurin JDK with Hotspot 11.0.15+10 (x64)".

purple_cape 1 points · Nov 2023

I messed it up so bad. I installed the new version of JDK. Then installed the 11. Still won’t open. What a nightmare, been fighting it all day

abcdefghijken 1 points · Nov 2023

Is there a way to stop AppData from creating tmcbeans? I have tried deleting it but whenever I open TMCBeans it will create the folder for me so I can’t access my projects in dropbox

desrtfx [OP] 1 points · Nov 2023

You can add any folder to dropbox syncing. Yet, you are not supposed to sync code via dropbox. You are supposed to sync code via git and github.

You also can select any different folder to store your TMC projects in.

Amnesia040 1 points · Dec 2023

do I also need to install JRE 11?

sencha-lover 1 points · Dec 2023

Is the JavaFX (part 13 and 14) of this course still not running? (For Mac Users)

Sweaty_Listen2684 1 points · Feb 2024

This didn't work for me and I don't know why. I'm on a mac and I installed JDK 11 and put the jdk path where it needed to go (right-clicked on tmcbeans and clicked "show package contents" => contents->Resources->tmcbeans->etc->opened tmcbeans.conf with txt editor, etc.) but it still wouldn't open for me. I spent hours searching and trying different solutions.

Found the directions to open TMC in vs code and was up and running in a matter of minutes: https://www.mooc.fi/en/installation/vscode/.

enlguy 1 points · Feb 2024

So... make sure to use old versions of everything, ignore MOOC instructions, and then maybe you can actually take the course... Seems they should provide even a basic update, or maybe it's better to find a different course?

desrtfx [OP] 1 points · Feb 2024

They won't update this course anymore. It has been retired.

Yet, it is still one of the best entry courses for Java.

Just because they use older versions doesn't mean a thing. Even the industry to a large part is on even older versions (Java 8) of Java.

No-Interaction6942 1 points · Feb 2024

This fixed my issue, but I couldn't get my tests to run with this error:

The JAVA_HOME environment variable is not defined correctly

I fixed this by going to start menu > Edit the system environment variables > deleting the JAVA_HOME variable, restarting Netbeans and it worked