I just installed NetBeans 21 running on JDK 17.
I have several old projects that build against JDK 8. I've added JDK 8
to my installed Java Platforms, set my Properties->Build->Compile to the
correct JDK (1.8), and have set source and target in the maven compiler
plugin to 1.8.
The project loads and builds as expected.
If I could get everyone to move to our latest parent pom, I could avoid
installing JDK 8, set the Java release version to 8, and have it built.
I have tested the latter, and it works as well. It's just a matter of
getting everyone to switch.
. . . . just my two cents
/mde/
On 3/2/2024 12:12 AM, Noel Abela wrote:
You can clearly see from the filename in the screen shot that it is not
a jre but a JDK. I got it from the oracle site here
https://www.oracle.com/java/technologies/javase/javase8-archive-downloads.html
I guess it is a bug.
Thanks for the other tips
On 01/03/2024 22:56, Noel Abela wrote:
Thanks again for your input.
As you can see from the attached screenshot I am getting the same
error for Java 8. But thanks to your suggestion, I managed to install
8 anyway by downloading it from within the platform manager itself.
As for the version issue, I am not sure if I am explaining myself
well. Below is the link where one can install the latest version of
Java which is 8. This is what the users of my application will do
before running my application.
https://www.java.com/download/ie_manual.jsp
If I build my application with a higher JDK their java will not allow
them to run my application. I would have to install their Java runtime
myself. I was just looking into this jlink that you mentioned and I
must say it looks interesting. What will have to be seen however, is
the final size of the distribution package. This will obviously be
larger than my present jar file and this will make updates more
inefficient but to what degree is what needs to be seen. I will
certainly try this out.
I will venture an answer to my own question of why java 8 is the
latest jre available. Is it maybe because jlink started from JDK9? If
so, then they are assuming that everyone will be using jlink which
might not be the case.
On 01/03/2024 19:01, Michael Bien wrote:
On 01.03.24 18:24, Noel Abela wrote:
I am confused about all these versions. How come if you download the
latest JRE from Oracle
this explains it. The platform manager expects a JDK, not a JRE. The
concept of JRE is a bit dated and no longer well defined since the
introduction of jlink, which allows to create your own JRE if needed.
I thought we added a better error msg in case a user tries to
register a JRE - apparently not ;)
you get Java 8 since the JDK went all the way up to 21?
yeah. so here is the summary:
- NetBeans 21 requires JDK 11, 17, or 21 to run as you can see on
the download page.
- You should be able to register JDK 8 or later using the java
platform manager and use it for your projects.
- 1.7 won't be possible anymore since the editor of NB relies on a
recent version of javac (which is bundled with NB), and javac itself
does no longer support the Java 7 target (8 works fine)
How come if you download the latest...
The Platform Manager itself can download JDKs.
This community maintained website might also help to find a version
from a vendor you prefer: https://javaalmanac.io/
If you install a JDK using tools like sdkman or a regular repository
on linux, NB should automatically add it to the platform manager
since it scans some well-known directories.
best regards,
-mbien
On 01/03/2024 16:15, Michael Bien wrote:
NetBeans 21 supports projects which use JDKs in the rage 8-21 with
limited support for early access dev builds 22, 23 etc.
javac itself dropped support for the 1.7 target in Java 20.
So your best bet would be to try NetBeans 17 which used nb-javac
based on JDK 19. Although I can't promise that this will work since
I don't think anyone tested anything with Java 7 for quite some time.
-mbien
On 01.03.24 10:32, Noel Abela wrote:
I have just installed Nebeans 22 which is using JDK 21.
I need to maintain a desktop application which is on JDK 1.7 but
when I attempt to add this JDK and even JDK 1.8, Netbeans gives
the following error ...
"Cannot detect and install the selected platform. The Java or
javac may not be executable."
I have read in other forums that this was a bug way back in
version 10 or 11.
I would have imagined that this would have been solved by version 22.
Does anyone know some fix or workaround for this?
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