Java: OpenJDK instead of Oracle's Java possible?

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Java: OpenJDK instead of Oracle's Java possible?

Postby Bernd.N » Mon May 20, 2019 12:28 pm

I have just seen an announcement from ELO (Enterprise Content Management) that they plan to switch from Oracle's Java to cost free OpenJDK this May, to spare its customers the new Java license costs.

Would that be possible also when using Servoy Smart Client?
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Re: Java: OpenJDK instead of Oracle's Java possible?

Postby lwjwillemsen » Mon May 20, 2019 2:04 pm

Hi Bernd,

Only Smartclient Servoy 8 can start without JavaWebStart through the stand alone bootstrapper.jar.
Servoy has no plans to rollback that to Servoy 7 regrettably (so I have heard).

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Re: Java: OpenJDK instead of Oracle's Java possible?

Postby Bernd.N » Mon May 20, 2019 3:43 pm

Hi Lambert,

do you mean that OpenJDK does not provide JavaWebStart and therefore OpenJDK is not possible to use for Servoy 7 Smart Client?
At least that is what I read from your post.

My question was more general if a cost free OpenJDK is a possible alternative for Oracle's $$-Java.
When browsing, I also found alternatives for Oracle's WebStart (e.g. Netx and OpenWebstart from Karakun).
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Re: Java: OpenJDK instead of Oracle's Java possible?

Postby lwjwillemsen » Mon May 20, 2019 4:40 pm

Hi Bernd,

Yes, that is what I mean. OpenJKD does not provide Javawebstart.
I did some testing with two alternatives for Javawebstart but I did not manage to get the Smart client (with the Servoy generated jnlp file) running...

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Re: Java: OpenJDK instead of Oracle's Java possible?

Postby sean » Mon May 20, 2019 6:10 pm

Hi Lambert,

We hosted a tech webinar recently on this subject. Recording is available at:
https://www.youtube.com/watch?v=jYTK0Wu7yF4&t=5s

I hope this helps.
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Re: Java: OpenJDK instead of Oracle's Java possible?

Postby jcompagner » Tue May 21, 2019 1:17 pm

Bernd.N wrote:Hi Lambert,

do you mean that OpenJDK does not provide JavaWebStart and therefore OpenJDK is not possible to use for Servoy 7 Smart Client?
At least that is what I read from your post.

My question was more general if a cost free OpenJDK is a possible alternative for Oracle's $$-Java.
When browsing, I also found alternatives for Oracle's WebStart (e.g. Netx and OpenWebstart from Karakun).


that Netx will be a bit useless i think, very old and i think not supported for many years

but https://dev.karakun.com/webstart/ could be come a very nice thing, it is kind of bootstrapper but then with a lot around it (ui on the client)
And also with native installers and an auto java download ..
could be a promising thing besides our bootstrapper
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Re: Java: OpenJDK instead of Oracle's Java possible?

Postby lwjwillemsen » Wed May 22, 2019 8:19 am

Hi Johan,

Thanks for this info!

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Re: Java: OpenJDK instead of Oracle's Java possible?

Postby lwjwillemsen » Wed May 22, 2019 8:21 am

Hi Sean,

We hosted a tech webinar recently on this subject. Recording is available at:
https://www.youtube.com/watch?v=jYTK0Wu7yF4&t=5s


Yes, I saw that. Very nice, thanks!

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Re: Java: OpenJDK instead of Oracle's Java possible?

Postby jcompagner » Wed May 22, 2019 12:23 pm

Johan Compagner
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Re: Java: OpenJDK instead of Oracle's Java possible?

Postby lwjwillemsen » Thu May 23, 2019 7:44 am

I tried the icedtea some time ago but gave up after an hour trying.
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Re: Java: OpenJDK instead of Oracle's Java possible?

Postby lwjwillemsen » Thu May 23, 2019 8:37 am

The Karakun webstart first release is scheduled for Q3/2019 :(
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