In my experience, it is more productive to focus on those synchronization warnings, as they will pop out in weird ways at runtime if you just ignore them. This error is likely a case of that.
There is something in your Ddragon static initializer that calls synchronous code at some point. If you post the class source, I can probably point it out right away. Steve On Tue, Jul 26, 2016 at 4:56 AM, Gareth Murfin <[email protected]> wrote: > I used the build hints to skip errors, now it stops on this line > is = Display.getInstance().getResourceAsStream( > Class.forName("java.lang.Object"),"/stmaps" ); > > I am presuming I need to do something else to load up files in the browser? > > > On Tuesday, July 26, 2016 at 7:26:39 PM UTC+8, Gareth Murfin wrote: >> >> Thanks, I cant see anything like that al;though I do have stuff like >> >> static private byte[] rgRS = new byte[NV_SIZE*4]; >> static GeneralTask[] pActObj = new >> GeneralTask[TASK_MAX]; >> >> etc, will they trigger it? >> >> >> On 26 July 2016 at 08:46, Steve Hannah <[email protected]> >> wrote: >> >>> The best thing to do is just no use the static initializer to initialize >>> objects that you aren't sure about. Instead instantiate them lazily. >>> >>> E.g. >>> >>> don't do anything like >>> >>> static MyClass c = new MyClass(); >>> >>> Steve >>> >>> On Mon, Jul 25, 2016 at 5:35 PM, Gareth Murfin <[email protected]> >>> wrote: >>> >>>> Thanks, how do I identify synchronous code? Surely no use of >>>> synchronized means it has all gone ? >>>> >>>> On 26 July 2016 at 05:51, Steve Hannah <[email protected]> >>>> wrote: >>>> >>>>> Check your static initializer for the Ddragon class. If you have >>>>> something like >>>>> >>>>> private static void myvar = new SomeObject(); >>>>> >>>>> And the SomeObject constructor includes synchronous code somewhere >>>>> down the line, then this would also trigger it. >>>>> >>>>> Steve >>>>> >>>>> On Monday, 25 July 2016, Gareth Murfin <[email protected]> >>>>> wrote: >>>>> >>>>>> I have removed all references to synchronized, but I am still getting >>>>>> this error with a Javascript build: >>>>>> >>>>>> [INFO] >>>>>> [INFO] --- teavm-maven-plugin:1.0.0-cn1-004:compile (web-client) @ >>>>>> MyApplication --- >>>>>> [INFO] Preparing classpath for JavaScript generation >>>>>> [INFO] Using the following classpath for JavaScript generation: >>>>>> /tmp/build7232626002789411357xxx/lib/CodenameOne.jar:/tmp/build7232626002789411357xxx/lib/Factory.jar:/tmp/build7232626002789411357xxx/lib/app.jar:/home/ec2-user/.m2/repository/org/teavm/teavm-classlib/1.0.0-cn1-004/teavm-classlib-1.0.0-cn1-004.jar:/home/ec2-user/.m2/repository/org/teavm/teavm-platform/1.0.0-cn1-004/teavm-platform-1.0.0-cn1-004.jar:/home/ec2-user/.m2/repository/org/teavm/teavm-core/1.0.0-cn1-004/teavm-core-1.0.0-cn1-004.jar:/home/ec2-user/.m2/repository/org/teavm/teavm-metaprogramming-api/1.0.0-cn1-004/teavm-metaprogramming-api-1.0.0-cn1-004.jar:/home/ec2-user/.m2/repository/commons-io/commons-io/2.4/commons-io-2.4.jar:/home/ec2-user/.m2/repository/com/carrotsearch/hppc/0.6.1/hppc-0.6.1.jar:/home/ec2-user/.m2/repository/org/teavm/teavm-jso-apis/1.0.0-cn1-004/teavm-jso-apis-1.0.0-cn1-004.jar:/home/ec2-user/.m2/repository/org/teavm/teavm-jso-impl/1.0.0-cn1-004/teavm-jso-impl-1.0.0-cn1-004.jar:/home/ec2-user/.m2/repository/org/mozilla/rhino/1.7.7/rhino-1.7.7.jar:/home/ec2-user/.m2/repository/org/ow2/asm/asm-debug-all/5.0.4/asm-debug-all-5.0.4.jar:/home/ec2-user/.m2/repository/com/google/code/gson/gson/2.2.4/gson-2.2.4.jar:/home/ec2-user/.m2/repository/com/jcraft/jzlib/1.1.3/jzlib-1.1.3.jar:/home/ec2-user/.m2/repository/joda-time/joda-time/2.7/joda-time-2.7.jar:/home/ec2-user/.m2/repository/org/teavm/teavm-jso/1.0.0-cn1-004/teavm-jso-1.0.0-cn1-004.jar:/home/ec2-user/.m2/repository/javax/servlet/javax.servlet-api/3.1.0/javax.servlet-api-3.1.0.jar:/home/ec2-user/.m2/repository/org/mitre/dsmiley/httpproxy/smiley-http-proxy-servlet/1.6/smiley-http-proxy-servlet-1.6.jar:/home/ec2-user/.m2/repository/org/apache/httpcomponents/httpclient/4.3.4/httpclient-4.3.4.jar:/home/ec2-user/.m2/repository/org/apache/httpcomponents/httpcore/4.3.2/httpcore-4.3.2.jar:/home/ec2-user/.m2/repository/commons-logging/commons-logging/1.1.3/commons-logging-1.1.3.jar:/home/ec2-user/.m2/repository/commons-codec/commons-codec/1.6/commons-codec-1.6.jar:/tmp/build7232626002789411357xxx/target/classes >>>>>> [INFO] Building JavaScript file >>>>>> [INFO] JavaScript file built with errors >>>>>> [ERROR] Method userclasses.DDragon.<clinit>()V is claimed to be >>>>>> synchronous, but it is has invocations of asynchronous methods >>>>>> at userclasses.DDragon.<clinit> >>>>>> at com.elite.dd.MyApplication.start(MyApplication.java:47) >>>>>> at com.codename1.impl.html5.Stub.run(Stub.java:80) >>>>>> at com.codename1.ui.Display.callSerially(Display.java:771) >>>>>> at com.codename1.impl.html5.Stub.main(Stub.java:68) >>>>>> [INFO] Debug information successfully written >>>>>> [INFO] Source maps successfully written >>>>>> [INFO] >>>>>> ------------------------------------------------------------------------ >>>>>> [INFO] BUILD FAILURE >>>>>> [INFO] >>>>>> ------------------------------------------------------------------------ >>>>>> [INFO] Total time: 20.337 s >>>>>> [INFO] Finished at: 2016-07-25T14:58:48-04:00 >>>>>> [INFO] Final Memory: 26M/875M >>>>>> [INFO] >>>>>> ------------------------------------------------------------------------ >>>>>> [ERROR] Failed to execute goal >>>>>> org.teavm:teavm-maven-plugin:1.0.0-cn1-004:compile (web-client) on >>>>>> project MyApplication: Build error -> [Help 1] >>>>>> org.apache.maven.lifecycle.LifecycleExecutionException: Failed to >>>>>> execute goal org.teavm:teavm-maven-plugin:1.0.0-cn1-004:compile >>>>>> (web-client) on project MyApplication: Build error >>>>>> at >>>>>> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:216) >>>>>> at >>>>>> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) >>>>>> at >>>>>> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) >>>>>> at >>>>>> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116) >>>>>> at >>>>>> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80) >>>>>> at >>>>>> org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51) >>>>>> at >>>>>> org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:120) >>>>>> at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:355) >>>>>> at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:155) >>>>>> at org.apache.maven.cli.MavenCli.execute(MavenCli.java:584) >>>>>> at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:216) >>>>>> at org.apache.maven.cli.MavenCli.main(MavenCli.java:160) >>>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >>>>>> at >>>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) >>>>>> at >>>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >>>>>> at java.lang.reflect.Method.invoke(Method.java:497) >>>>>> at >>>>>> org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289) >>>>>> at >>>>>> org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229) >>>>>> at >>>>>> org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415) >>>>>> at >>>>>> org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356) >>>>>> Caused by: org.apache.maven.plugin.MojoExecutionException: Build error >>>>>> at >>>>>> org.teavm.maven.BuildJavascriptMojo.execute(BuildJavascriptMojo.java:103) >>>>>> at >>>>>> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:132) >>>>>> at >>>>>> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208) >>>>>> ... 19 more >>>>>> [ERROR] >>>>>> [ERROR] Re-run Maven using the -X switch to enable full debug logging. >>>>>> [ERROR] >>>>>> [ERROR] For more information about the errors and possible solutions, >>>>>> please read the following articles: >>>>>> [ERROR] [Help 1] >>>>>> http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException >>>>>> Currently 'stopOnErrors' is on. With this enabled, even build warnings >>>>>> will cause the build to fail. >>>>>> Try adding the 'javascript.stopOnErrors=false' build hint and see if it >>>>>> builds. >>>>>> WARNING: switching stopOnErrors off may result in runtime errors, if the >>>>>> warnings actually fall in the execution path of the app. >>>>>> >>>>>> -- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "CodenameOne Discussions" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>> send an email to [email protected] >>>>>> . >>>>>> Visit this group at >>>>>> https://groups.google.com/group/codenameone-discussions. >>>>>> To view this discussion on the web visit >>>>>> https://groups.google.com/d/msgid/codenameone-discussions/eee3aba0-51a7-4535-a663-7245ac04a928%40googlegroups.com >>>>>> <https://groups.google.com/d/msgid/codenameone-discussions/eee3aba0-51a7-4535-a663-7245ac04a928%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>> . >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>> -- >>>>> You received this message because you are subscribed to a topic in the >>>>> Google Groups "CodenameOne Discussions" group. >>>>> To unsubscribe from this topic, visit >>>>> https://groups.google.com/d/topic/codenameone-discussions/SvAR87Pz7ns/unsubscribe >>>>> . >>>>> To unsubscribe from this group and all its topics, send an email to >>>>> [email protected]. >>>>> Visit this group at >>>>> https://groups.google.com/group/codenameone-discussions. >>>>> To view this discussion on the web visit >>>>> https://groups.google.com/d/msgid/codenameone-discussions/CAGOYrKUAxjJ9iGfhu4PLdkA0-eNb2kJ2DeN4XqL2WpRA4QomjQ%40mail.gmail.com >>>>> <https://groups.google.com/d/msgid/codenameone-discussions/CAGOYrKUAxjJ9iGfhu4PLdkA0-eNb2kJ2DeN4XqL2WpRA4QomjQ%40mail.gmail.com?utm_medium=email&utm_source=footer> >>>>> . >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> >>>> >>>> >>>> -- >>>> Gareth Murfin >>>> (Android Freelancer - www.garethmurfin.co.uk) >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "CodenameOne Discussions" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> Visit this group at >>>> https://groups.google.com/group/codenameone-discussions. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/codenameone-discussions/CANOaY6m37Q_QsBz3048fZP5T-cjUVi9AY%3D3xv23H7%3DvgaEW0tQ%40mail.gmail.com >>>> <https://groups.google.com/d/msgid/codenameone-discussions/CANOaY6m37Q_QsBz3048fZP5T-cjUVi9AY%3D3xv23H7%3DvgaEW0tQ%40mail.gmail.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> >>> >>> -- >>> Steve Hannah >>> Software Developer >>> Codename One >>> http://www.codenameone.com >>> >>> -- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "CodenameOne Discussions" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/codenameone-discussions/SvAR87Pz7ns/unsubscribe >>> . >>> To unsubscribe from this group and all its topics, send an email to >>> [email protected]. >>> Visit this group at >>> https://groups.google.com/group/codenameone-discussions. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/codenameone-discussions/CAGOYrKUXMgEYfDaidbGR3NFMs_U%2Bwca299pR3LrKO%3DWfPGR99g%40mail.gmail.com >>> <https://groups.google.com/d/msgid/codenameone-discussions/CAGOYrKUXMgEYfDaidbGR3NFMs_U%2Bwca299pR3LrKO%3DWfPGR99g%40mail.gmail.com?utm_medium=email&utm_source=footer> >>> . >>> >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> >> >> -- >> Gareth Murfin >> (Android Freelancer - www.garethmurfin.co.uk) >> >> -- > You received this message because you are subscribed to the Google Groups > "CodenameOne Discussions" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > Visit this group at > https://groups.google.com/group/codenameone-discussions. > To view this discussion on the web visit > https://groups.google.com/d/msgid/codenameone-discussions/4b75bd56-743e-40fc-8c28-c59d0fbd9283%40googlegroups.com > <https://groups.google.com/d/msgid/codenameone-discussions/4b75bd56-743e-40fc-8c28-c59d0fbd9283%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- Steve Hannah Software Developer Codename One http://www.codenameone.com -- You received this message because you are subscribed to the Google Groups "CodenameOne Discussions" group. 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