Re: GWT 2.5 and IBM JVM problems

I can confirm that there is no problem.

All is working fine.

If someone wants the compiled code, just send me an email.

Regards,

Adolfo.

2012/8/29 Adolfo Panizo Touzon <adolfo.panizo@gmail.com>

I am really impressed about your comments. Really smart people.

Keep doing in that way.

I've tried both ways to solve the problem, and the first one (including the serialVersionUID), I had some problems (maybe I made some mistakes).

But with the second solution, compiling gwt with IBM's JVM is working! :)

I have to do more tests, but right know all looks fine.

For people that are having these problem just tell one thing, you should use the jdk that is included in RAD (I've tried to download manually from the web page and for Windows the latest version is 1.4 :O ).

Really thanks,

Adolfo.

2012/8/28 Brian Slesinsky <skybrian@google.com>

On Tuesday, August 28, 2012 1:45:42 PM UTC-7, Thomas Broyer wrote:

On Tuesday, August 28, 2012 10:17:41 PM UTC+2, Daniel Kurka wrote:

I still don`t really get the issue since this is only an issue while developing GWT (am I right?)

As far as I know the jars we are packing (gwt-servlet,...) do not depend on a certain JVM. 

Can people who need an IBM JVM running for their servers not simply use the -noserver option with an Oracle JDK?

No, it's an issue when compiling with the GWT Compiler while processing the gwtar files packaged in the gwt-user.jar (see issue 7530).
And the Oracle JDK is apparently not an option on some OSes (see the thread in gwt-steering)

Moreover, the fix seems to be rather simple: follow java.io.Serializable contract and provide an explicit serialVersionUID (and make sure we change it whenever we modify the classes)

I talked to Ray a bit about this. We'd like to avoid setting serialVersionUID manually since it's another maintenance chore and we're sure to forget. We aren't doing long-term persistence, so the default way that serialVersionUID works should ensure that we rebuild gwttar whenever necessary. But perhaps this needs to be rebuilt when using IBM's JDK?

I also don't understand why removing the gwtar file doesn't solve the problem. Something else is going on.

- Brian

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