I agree with Frank,

I never use Plugin from Eclipse or IntelliJ. Just use pure Chrome and Maven 
for building the project, debugging, etc.. That's it. Here is the shortest 
example: https://bit.ly/WebJavaStory

The first step I always take is to separate the GWT project from the 
"server" project. Why? Because with this separation I could use whatever 
libraries I need to use. 

*Remember: At the end, GWT is a transpiler (source to source compiler from 
Java source to JavaScript source). **I'm always be able just to copy the 
JavaScript result to my web server, together with HTML and CSS.*

For a very simple example take a look the standard GWT example 
*StockWatcher* 
(https://www.gwtproject.org/doc/latest/tutorial/gettingstarted.html) in the 
"*new*" environment: https://github.com/lofidewanto/stockwatcher

Hope this helps!
Jens schrieb am Freitag, 16. Dezember 2022 um 10:53:09 UTC+1:

> I use Jetty but manage it externally and not via GWT or any build tool 
> plugin. Usually I use a Jetty docker container, preconfigured as much as 
> possible to match production environment. Then I either mount the generated 
> *.war file directly into the container or I mount a local webapps folder 
> into the Jetty webapps folder inside the container.
>
> Before using Jetty docker container I used IntelliJ Ultimate to manage 
> Jetty within IntelliJ. In that scenario I had a run configuration that 
> (re-)starts jetty and before doing so that run configuration executed the 
> build tool to update the *.war file deployed in Jetty.
>
> The key point in both approaches is to have a separately managed servlet 
> container, ideally matching production configuration. Because of that I 
> never had any issues with any GWT release or build tool plugin and I 
> usually use a GWT build directly from GWT's main branch.
>
> -- J.
>
> mmo schrieb am Freitag, 16. Dezember 2022 um 10:22:48 UTC+1:
>
>> Thanks the misc. links and comments! Highly appreciated. Will try to work 
>> through them to get us going.
>>
>> @nam...@gmail.com
>> > What kind of issue do you have with the dev mode (with gwt plugin on 
>> eclipse) ?
>> After my last eclipse update (to 2021-12) the GWT plugin (V3) just seized 
>> to work. It doesn't even show up anymore (in Views, Preferences, etc.). 
>> I even un- and re-installed it but it doesn't appear anywhere. According 
>> to some Google-matches I am not alone with that. :-(
>>
>> @frank.h...@googlemail.com
>> > Depending on your backend 
>> We are not using a spring boot server. For testing we deploy to a Tomcat 
>> and we deliver our application with an embedded tomcat. 
>> That's why a setup using Tomcat would be an optimal solution.
>>
>>
>> On Thursday, December 15, 2022 at 6:18:14 PM UTC+1 
>> jh...@bouncesoftware.com wrote:
>>
>>> Hi, FWIW - have also been working with GWT since the start - it took a 
>>> little while to get used to developing without the browser plugins (old 
>>> GWT), but honestly, the "NEW" way of running GWT is much better in every 
>>> way.   Stick with it and ask questions.  The community is amazing.  
>>>
>>> We have a GWT app that was started in 2012 and it's still a pleasure to 
>>> work with a decade later.
>>>
>>> Unfortunately, since the project is older it isn't compatible with the 
>>> newer maven plugins that make development *very* easy (2 command lines to 
>>> run the app server and GWT development mode)
>>>
>>> We have Tomcat in production and chose to do development with a Tomcat 
>>> server as well.
>>>
>>> Using Eclipse, Eclipse GWT Plugin, Eclipse, Java 11+, Managed Tomcat 
>>> Server 9, GWT 2.9, ANT to compile the war.
>>>
>>> Adjust the server.xml in Eclipse to know where to find the war folder 
>>> for your GWT project...
>>> <!-- Note the relative path for docBase to allow Eclipse to find the 
>>> project war directory - or hard-code the path -->
>>>
>>> <Context path="/APPNAME"
>>>
>>>    docBase="../../../../../PROJECTNAME/war" reloadable="true"
>>>
>>>    crossContext="true" debug="0" distributable="true">
>>>
>>> ...
>>> </Context
>>>
>>> Install the GWT plugin  
>>> http://gwt-plugins.github.io/documentation/gwt-eclipse-plugin/Download.html
>>>
>>> Set the program arguments to:
>>>
>>> Note Bind Address lets you connect from other devices on the same 
>>> network - helpful to try out the GWT app via tablet, etc.
>>>
>>> -port 9876 -bindAddress 0.0.0.0 -logLevel INFO -war 
>>> C:\...\PROJECTNAME\war {{GWT Module Names ie.  com.app.ModuleA}}
>>>
>>> Set the VM arguments to:
>>>
>>> -Xmx1024m -Xms54m 
>>>
>>>
>>>
>>> On Thursday, December 15, 2022 at 8:13:52 AM UTC-7 
>>> frank.h...@googlemail.com wrote:
>>>
>>>> Depending on your backend (Spring Boot or not) you can generate ready 
>>>> to go Maven-projects. Use Maven goals to start the code server and the 
>>>> server. And debug inside the browser. No need for a GWT-plugin inside the 
>>>> IDE. 
>>>>
>>>> Use: https://github.com/tbroyer/gwt-maven-archetypes to generate a 
>>>> module with separate client, server and shared module in case you do not 
>>>> have a Spring Boot server. Use: 
>>>> https://github.com/NaluKit/gwt-maven-springboot-archetype in case you 
>>>> prefer to use Spring Boot. This one also generates separate client-, 
>>>> shared- and server-module. Both are perfect starts for an update. 
>>>>
>>>> When working on Windows use: *mvn:devmode *instead of *mvn:codeserver* 
>>>> .
>>>>
>>>> Frank schrieb am Donnerstag, 15. Dezember 2022 um 14:34:52 UTC+1:
>>>>
>>>>> Maybe https://dev.to/ibaca/modern-gwt-first-steps-509k can help
>>>>>
>>>>> As a note. We use the paid version of IntelliJ. This has a GWT plugin 
>>>>> aboard which we find very usefull.
>>>>>
>>>>> Op woensdag 14 december 2022 om 20:50:58 UTC+1 schreef 
>>>>> maple.c...@gmail.com:
>>>>>
>>>>>> It is a bit of a challenge to get GWT to work well in IntelliJ with 
>>>>>> Jetty. We finally got it working very well a year ago, thanks to a site 
>>>>>> that explained some of the key points for getting it to work. The URL of 
>>>>>> the site is 
>>>>>> https://imsavva.com/how-to-debug-gwt-in-2021-and-fix-error-scanning-entry/
>>>>>>
>>>>>> The site is a bit dated, but the main points are still valid. If you 
>>>>>> use jetty, do use jetty 10, not jetty 11. GWT 2.10.0 works. Java 
>>>>>> versions 
>>>>>> all the way to java 17 work. Not sure whether jetty 9.4 works with Java 
>>>>>> 9 
>>>>>> and up; we never tried that combination. Over the last year, our 
>>>>>> combinations, with IntelliJ, have been:
>>>>>>
>>>>>> 1. gwt 2.8.2 with builtin jetty 9.2 (initially, before we moved to 
>>>>>> using the jetty plugin in IntelliJ))
>>>>>> 2. gwt 2.8.2, gwt 2.9.0, and gwt 2.10.0 with jetty plugin (jetty 9.4) 
>>>>>> and java 8
>>>>>> 3. gwt 2.10 with jetty 10 and jetty plugin and java 17. This is what 
>>>>>> we have now. The GWT configuration is a tiny bit different as GWT 2.10.0 
>>>>>> can only handle Java 11 right now, not Java 17.
>>>>>>
>>>>>> We never found the need to use the jetty plugin until we needed to 
>>>>>> use WebSocket and jetty 9.2 can't handle WebSocket very well. There was 
>>>>>> a 
>>>>>> way to get around it, but unfortunately that way was blocked by Java 9 
>>>>>> and 
>>>>>> up. A year ago, I found out about that site. I followed the instructions 
>>>>>> from that site and got everything working with some changes, as my 
>>>>>> source 
>>>>>> code structure is different from his.
>>>>>>
>>>>>> Let me know if you encountered an issue you can't solve. I don't 
>>>>>> check the mailbox of this email address, so posting the questions here 
>>>>>> is 
>>>>>> better. If this is the right way to go about this in this group.
>>>>>>
>>>>>> We have been using GWT since the beginning, for almost 15 years now. 
>>>>>> We started using jetty about 8 years ago; before that, we were using 
>>>>>> Tomcat 
>>>>>> (and Apache). We migrated from Eclipse to IntelliJ about 3 years ago. We 
>>>>>> never use maven as we need to be able to build the whole system with 
>>>>>> everything included in a repo (except Java). Just a weird requirement, 
>>>>>> that 
>>>>>> is for sure. So, we are still using ant to build our war file as well.
>>>>>>
>>>>>> On Wednesday, December 14, 2022 at 12:53:35 PM UTC-5 nam...@gmail.com 
>>>>>> wrote:
>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> We succesfully use the gwt 2.10 dev mode to run and debug our 
>>>>>>> applications. We had to overide the JettyLauncher class to be able to 
>>>>>>> run 
>>>>>>> it with java > 8.
>>>>>>> What kind of issue do you have with the dev mode (with gwt plugin on 
>>>>>>> eclipse) ?
>>>>>>>
>>>>>>> Le mer. 14 déc. 2022 à 18:22, mmo <mmo...@gmail.com> a écrit :
>>>>>>>
>>>>>>>> Over the last years our GWT development environment has eroded more 
>>>>>>>> and more.
>>>>>>>> First the browser plugins seized to work, then the 
>>>>>>>> mapping/JS-code-backtranslation stopped working and recently also the 
>>>>>>>> IDE 
>>>>>>>> plugins for Eclipse and IntelliJ that would deploy the generated 
>>>>>>>> artifacts 
>>>>>>>> to the correct places, start the code server and allowed some 
>>>>>>>> minimalistic 
>>>>>>>> form of debugging seized to work. It is getting more and more not just 
>>>>>>>> frustrating but really horrible and "mission impossible".
>>>>>>>>
>>>>>>>> Thus a while ago I began an effort to port our application to GWT 
>>>>>>>> 2.10 and Java 8 (our "production version" still runs with GWT 2.7 and 
>>>>>>>> Java 
>>>>>>>> 7 and I can't go to higher Java versions due to some libraries, yet). 
>>>>>>>>
>>>>>>>> Meanwhile I found my way through all the library conflicts so that 
>>>>>>>> I am able to build and generate a version that runs fine when 
>>>>>>>> deploying the 
>>>>>>>> generated .war file to to a Tomcat Server (v8.5 in our case).
>>>>>>>>
>>>>>>>> But being able to building a running version is one thing. The 
>>>>>>>> other is to have a development setup that doesn't shy away developers 
>>>>>>>> crying and yelling but allows to do decent client side code debugging.
>>>>>>>>
>>>>>>>> With the "old" GWT plugin the commands "gwt:run" and "gwt:debug" 
>>>>>>>> didn't work anymore with GWT 2.10. I keep getting the following error 
>>>>>>>> during Jetty startup:
>>>>>>>>
>>>>>>>> java.lang.IllegalArgumentException: Object of class 
>>>>>>>> 'com.google.gwt.dev.shell.jetty.JettyLauncher.WebAppContextWithReload' 
>>>>>>>> is 
>>>>>>>> not of type 'org.eclipse.jetty.webapp.WebAppContext'. 
>>>>>>>> Object Class and type Class are from different loaders. in 
>>>>>>>> file:///D:/Projects/our-app/our-app-web/target/our-app/WEB-INF/jetty-web.xml
>>>>>>>>      at 
>>>>>>>> org.eclipse.jetty.xml.XmlConfiguration$JettyXmlConfiguration.configure(XmlConfiguration.java:421)
>>>>>>>>  
>>>>>>>>
>>>>>>>>      ...
>>>>>>>>
>>>>>>>> I also read in this forum that other people had issues with GWT 
>>>>>>>> 2.10 and Jetty (and that the maintainers of GWT are aware of that but 
>>>>>>>> don't 
>>>>>>>> plan to fix this) so I guess it's time to switch to deploying to 
>>>>>>>> Tomcat, 
>>>>>>>> instead. Probably I also will switch to the new GWT plugin (by 
>>>>>>>> T.Broyer). I 
>>>>>>>> already tried it and I can at least build the same .war file using it.
>>>>>>>>
>>>>>>>> But how do I set this while thing up to provide a better developer 
>>>>>>>> experience? Is there some example or description of how to deploy a 
>>>>>>>> GWT 
>>>>>>>> 2.10 application to a Tomcat server in development mode (i.e. with 
>>>>>>>> code 
>>>>>>>> server and - if possible - hot code replacement, etc.)? How can GWT 
>>>>>>>> development be made "convenient" or at least acceptable again? 
>>>>>>>>
>>>>>>>> Any pointers, descriptions or examples would be highly appreciated!
>>>>>>>>
>>>>>>>> -- 
>>>>>>>> You received this message because you are subscribed to the Google 
>>>>>>>> Groups "GWT Users" group.
>>>>>>>> To unsubscribe from this group and stop receiving emails from it, 
>>>>>>>> send an email to google-web-tool...@googlegroups.com.
>>>>>>>> To view this discussion on the web visit 
>>>>>>>> https://groups.google.com/d/msgid/google-web-toolkit/d2fd58f0-f5e7-4a2b-9320-45d5ec244379n%40googlegroups.com
>>>>>>>>  
>>>>>>>> <https://groups.google.com/d/msgid/google-web-toolkit/d2fd58f0-f5e7-4a2b-9320-45d5ec244379n%40googlegroups.com?utm_medium=email&utm_source=footer>
>>>>>>>> .
>>>>>>>>
>>>>>>>

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