Hi Colin, I posted this issue on the gwt plugin site below, but there is no reply yet.
https://github.com/gwt-plugins/gwt-eclipse-plugin/issues/470 In addition, I've tried to install other version of Eclipse such as Eclipse 4.18 (2020-12) with a new workspace. After I installed GWT plugin 3 from market place and tried to create a sample gwt web application project as described below in gwt site, I got the error " Invocation of com.google.gwt.user.tools.WebAppCreator failed. See the error log for more details." It seems to me this current market place gwt plugin didn't work as I didn't use our project at all and followed the tutorial below. https://www.gwtproject.org/usingeclipse.html Is there a way to get a working GWT plugin for Eclipse which can work with JDK 11? Your help is much appreciated! Jenny On Tuesday, July 4, 2023 at 12:43:05 PM UTC-5 Colin Alworth wrote: > If the class can't be found, something is wrong with your gwt-dev, or the > gwt-dev isn't on the classpath, or more details from the error message will > indicate why the Compiler class couldn't be loaded. > > Please file a bug with more details (logs, full error message, other > details about differences between the working computer and non-working > computer) at https://github.com/gwt-plugins/gwt-eclipse-plugin/ so > contributors there can take a closer look? > > On Sunday, July 2, 2023 at 2:28:44 PM UTC-5 [email protected] wrote: > >> I tried to reinstall Eclipse again and GWT 3 plugin again from Eclipse >> market, downloaded and reinstalled gwt 2.9 for the project, however, I >> still encountered the error below. >> It is so weird, the project configuration in eclipse works in my old >> laptop, not in the new one though it both has windows 10 installed. >> >> Error: Could not find or load main class com.google.gwt.dev.Compiler >> >> eclipse-jee-2020-06-R-win32-x86_64 >> GWT Plugin 3.0 >> gwt-2.9.0 >> >> Please see attached for the java build path dialog in eclipse. >> >> Any idea about resolving this error? Please help shed some light on this >> problem. >> >> Your help is much appreciated! >> Jenny >> >> >> On Friday, June 16, 2023 at 3:25:42 PM UTC-5 Ying Jin wrote: >> >>> Thanks for your reply. Please see attached for the GWT lib specified in >>> the java build path in Eclipse. I tried to compile it with JDK 8 and it >>> didn't work either. >>> The same project configuration in Eclipse worked in my old laptop, but >>> not in my new laptop. The Eclipse in the new laptop is a copy of the >>> Eclipse installed in the old laptop. >>> >>> In addition, I also tried to copy the "gwt-dev.jar" from the old laptop >>> to the new one, but the compilation still gave me the following error. >>> >>> Error: Could not find or load main class com.google.gwt.dev.Compiler >>> >>> The project was compiled by using GWT->Compile option provided by the >>> GWT Plugin installed in Eclipse. >>> >>> Version: 2020-06 (4.16.0) >>> GWT Plugin version: 3.0 >>> >>> Your help is greatly appreciated! >>> >>> thanks, >>> Jenny >>> On Friday, June 16, 2023 at 12:33:18 PM UTC-5 Colin Alworth wrote: >>> >>>> GWT 2.9 should support running on Java 11, both running on JDK 11 and >>>> compiling Java 11 sources. >>>> >>>> Without other information, it sounds like there is a problem with your >>>> copy of gwt-dev.jar - the jar might be corrupt, or somehow not on your >>>> classpath? >>>> >>>> Can you verify that the jar is present and correct, and share more >>>> specifics of how you are building? >>>> >>>> On Thursday, June 15, 2023 at 6:00:43 PM UTC-5 [email protected] wrote: >>>> >>>>> Hello, >>>>> >>>>> I tried to compile our GWT 2.9 project with JDK 11, but encountered >>>>> the following error: >>>>> >>>>> Error: Could not find or load main class com.google.gwt.dev.Compiler >>>>> >>>>> Caused by: java.lang.ClassNotFoundException: >>>>> com.google.gwt.dev.Compiler >>>>> >>>>> BTW, the Eclipse version is Version: 2020-06 (4.16.0). >>>>> >>>>> Please help shed some lights on this issue. >>>>> >>>>> thanks, >>>>> Jenny >>>>> >>>> -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/google-web-toolkit/e627009b-2fb5-48f2-8e6b-b053fd3826d8n%40googlegroups.com.
