Thanks for the prompt response.
The issue is the internal Jetty that cannot be loaded with openJdk 11. Here is the log.
Is there any way to replace the internal Jetty with a higher version? I Checked the Jetty forum and apparently they are aware of this.
Code server started in 20.11 s ms
[ERROR] jreLeakPrevention.gcDaemonFail
java.lang.ClassNotFoundException: sun.misc.GC
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:315)
at com.google.gwt.dev.shell.jetty.JettyLauncher.jreLeakPrevention(JettyLauncher.java:899)
at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:722)
at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:636)
at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:898)
at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:705)
at com.google.gwt.dev.DevMode.main(DevMode.java:432)
2020-07-27 15:36:29.138:INFO:oejs.Server:main: jetty-9.2.z-SNAPSHOT
Starting Jetty on port 8888
[WARN] Failed startup of context c.g.g.d.s.j.WebAppContextWithReload@8953a7d{/,file:/C:/Eclipse_WP_Java11/Rguroo/war/,STARTING}{C:\Eclipse_WP_Java11\Rguroo\war}
MultiException[java.lang.RuntimeException: Error scanning file Rguroo$1.class, java.lang.RuntimeException: Error scanning file Rguroo$1MyHandler$1.class, java.lang.RuntimeException: Error scanning file Rguroo$1MyHandler.class, java.lang.RuntimeException: Error scanning file Rguroo.class]
at org.eclipse.jetty.annotations.AnnotationConfiguration.scanForAnnotations(AnnotationConfiguration.java:536)
at org.eclipse.jetty.annotations.AnnotationConfiguration.configure(AnnotationConfiguration.java:447)
at org.eclipse.jetty.webapp.WebAppContext.configure(WebAppContext.java:479)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1337)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:741)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:505)
at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:550)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)
at org.eclipse.jetty.server.handler.RequestLogHandler.doStart(RequestLogHandler.java:140)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)
at org.eclipse.jetty.server.Server.start(Server.java:387)
at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)
at org.eclipse.jetty.server.Server.doStart(Server.java:354)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:760)
at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:636)
at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:898)
at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:705)
at com.google.gwt.dev.DevMode.main(DevMode.java:432)
Caused by: MultiException[java.lang.RuntimeException: Error scanning file Rguroo$1.class, java.lang.RuntimeException: Error scanning file Rguroo$1MyHandler$1.class, java.lang.RuntimeException: Error scanning file Rguroo$1MyHandler.class, java.lang.RuntimeException: Error scanning file Rguroo.class]
at org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:681)
at org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:688)
at org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:688)
at org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:688)
at org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:688)
at org.eclipse.jetty.annotations.AnnotationParser.parse(AnnotationParser.java:824)
at org.eclipse.jetty.annotations.AnnotationConfiguration$ParserTask.call(AnnotationConfiguration.java:163)
at org.eclipse.jetty.annotations.AnnotationConfiguration$1.run(AnnotationConfiguration.java:548)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
at java.base/java.lang.Thread.run(Thread.java:834)
Suppressed: java.lang.RuntimeException: Error scanning file Rguroo$1MyHandler$1.class
at org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:708)
... 10 more
Caused by: java.lang.UnsupportedOperationException: This feature requires ASM7
at org.objectweb.asm.ClassVisitor.visitNestHost(ClassVisitor.java:150)
at org.objectweb.asm.ClassReader.accept(ClassReader.java:550)
at org.objectweb.asm.ClassReader.accept(ClassReader.java:400)
at org.eclipse.jetty.annotations.AnnotationParser.scanClass(AnnotationParser.java:974)
at org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:702)
... 10 more
Suppressed: java.lang.RuntimeException: Error scanning file Rguroo$1MyHandler.class
at org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:708)
... 10 more
Caused by: java.lang.UnsupportedOperationException: This feature requires ASM7
at org.objectweb.asm.ClassVisitor.visitNestHost(ClassVisitor.java:150)
at org.objectweb.asm.ClassReader.accept(ClassReader.java:550)
at org.objectweb.asm.ClassReader.accept(ClassReader.java:400)
at org.eclipse.jetty.annotations.AnnotationParser.scanClass(AnnotationParser.java:974)
at org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:702)
... 10 more
Suppressed: java.lang.RuntimeException: Error scanning file Rguroo.class
at org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:708)
... 10 more
Caused by: java.lang.UnsupportedOperationException: This feature requires ASM7
at org.objectweb.asm.ClassVisitor.visitNestMember(ClassVisitor.java:236)
at org.objectweb.asm.ClassReader.accept(ClassReader.java:660)
at org.objectweb.asm.ClassReader.accept(ClassReader.java:400)
at org.eclipse.jetty.annotations.AnnotationParser.scanClass(AnnotationParser.java:974)
at org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:702)
... 10 more
Caused by: java.lang.RuntimeException: Error scanning file Rguroo$1.class
at org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:708)
... 10 more
Caused by: java.lang.UnsupportedOperationException: This feature requires ASM7
at org.objectweb.asm.ClassVisitor.visitNestHost(ClassVisitor.java:150)
at org.objectweb.asm.ClassReader.accept(ClassReader.java:550)
at org.objectweb.asm.ClassReader.accept(ClassReader.java:400)
at org.eclipse.jetty.annotations.AnnotationParser.scanClass(AnnotationParser.java:974)
at org.eclipse.jetty.annotations.AnnotationParser.parseDir(AnnotationParser.java:702)
... 10 more
2020-07-27 15:36:31.285:INFO:oejs.ServerConnector:main: Started ServerConnector@21421b3{HTTP/1.1}{
127.0.0.1:8888}
2020-07-27 15:36:31.285:INFO:oejs.Server:main: Started @23499ms