Hi,

I am upgrading my existing code from GWT 1.4 to GWT 1.6.we have used
the FastTree.java in our code. it is compiling fine with 1.4.

I have kept the latest jar files(gwtuser, gwt windows, gwt servlet,
and  gwt-incubator_1-4_final.jar) in the path, but still it is
throwing an error.

I have used eclipse editor and also kept all jar file in the
reference.

i also tested with jdk 1.5 and jdk 1.6 , same problem i am getting.


I am getting the below message eror message while trying to compile
the code.

   [ERROR] Errors in 'jar:file:/C:/path/gwt-incubator_1-4_final.jar!/
com/google/gwt/widgetideas/client/FastTree.java'
      [ERROR]  Internal compiler error
java.lang.IncompatibleClassChangeError: Found class
com.google.gwt.core.ext.TreeLogger, but interface was expected
        at
com.google.gwt.libideas.resources.rebind.context.InlineResourceBundleGenerator.createResourceContext
(Unknown Source)
        at
com.google.gwt.libideas.resources.rebind.AbstractResourceBundleGenerator.generate
(Unknown Source)
        at com.google.gwt.dev.cfg.RuleGenerateWith.realize
(RuleGenerateWith.java:49)
        at com.google.gwt.dev.shell.StandardRebindOracle
$Rebinder.tryRebind(StandardRebindOracle.java:113)
        at com.google.gwt.dev.shell.StandardRebindOracle
$Rebinder.rebind(StandardRebindOracle.java:62)
        at com.google.gwt.dev.shell.StandardRebindOracle.rebind
(StandardRebindOracle.java:172)
        at com.google.gwt.dev.shell.StandardRebindOracle.rebind
(StandardRebindOracle.java:161)
        at com.google.gwt.dev.Precompile
$DistillerRebindPermutationOracle.getAllPossibleRebindAnswers
(Precompile.java:204)
        at
com.google.gwt.dev.jdt.WebModeCompilerFrontEnd.doFindAdditionalTypesUsingRebinds
(WebModeCompilerFrontEnd.java:128)
        at com.google.gwt.dev.jdt.AbstractCompiler$CompilerImpl.process
(AbstractCompiler.java:151)
        at org.eclipse.jdt.internal.compiler.Compiler.compile
(Compiler.java:444)
        at com.google.gwt.dev.jdt.AbstractCompiler$CompilerImpl.compile
(AbstractCompiler.java:85)
        at com.google.gwt.dev.jdt.AbstractCompiler$CompilerImpl.compile
(AbstractCompiler.java:181)
        at com.google.gwt.dev.jdt.AbstractCompiler$CompilerImpl.access
$400(AbstractCompiler.java:71)
        at com.google.gwt.dev.jdt.AbstractCompiler.compile
(AbstractCompiler.java:473)
        at
com.google.gwt.dev.jdt.WebModeCompilerFrontEnd.getCompilationUnitDeclarations
(WebModeCompilerFrontEnd.java:73)
        at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler.precompile
(JavaToJavaScriptCompiler.java:254)
        at com.google.gwt.dev.Precompile.precompile(Precompile.java:
300)
        at com.google.gwt.dev.GWTCompiler.run(GWTCompiler.java:180)
        at com.google.gwt.dev.GWTCompiler.run(GWTCompiler.java:150)
        at com.google.gwt.dev.GWTCompiler$1.run(GWTCompiler.java:119)
        at com.google.gwt.dev.CompileTaskRunner.doRun
(CompileTaskRunner.java:84)
        at
com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger
(CompileTaskRunner.java:78)
        at com.google.gwt.dev.GWTCompiler.main(GWTCompiler.java:126)

[ERROR] Unexpected
java.lang.IncompatibleClassChangeError: Found class
com.google.gwt.core.ext.TreeLogger, but interface was expected
        at
com.google.gwt.libideas.resources.rebind.context.InlineResourceBundleGenerator.createResourceContext
(Unknown Source)
        at
com.google.gwt.libideas.resources.rebind.AbstractResourceBundleGenerator.generate
(Unknown Source)
        at com.google.gwt.dev.cfg.RuleGenerateWith.realize
(RuleGenerateWith.java:49)
        at com.google.gwt.dev.shell.StandardRebindOracle
$Rebinder.tryRebind(StandardRebindOracle.java:113)
        at com.google.gwt.dev.shell.StandardRebindOracle
$Rebinder.rebind(StandardRebindOracle.java:62)
        at com.google.gwt.dev.shell.StandardRebindOracle.rebind
(StandardRebindOracle.java:172)
        at com.google.gwt.dev.shell.StandardRebindOracle.rebind
(StandardRebindOracle.java:161)
        at com.google.gwt.dev.Precompile
$DistillerRebindPermutationOracle.getAllPossibleRebindAnswers
(Precompile.java:204)
        at
com.google.gwt.dev.jdt.WebModeCompilerFrontEnd.doFindAdditionalTypesUsingRebinds
(WebModeCompilerFrontEnd.java:128)
        at com.google.gwt.dev.jdt.AbstractCompiler$CompilerImpl.process
(AbstractCompiler.java:151)
        at org.eclipse.jdt.internal.compiler.Compiler.compile
(Compiler.java:444)
        at com.google.gwt.dev.jdt.AbstractCompiler$CompilerImpl.compile
(AbstractCompiler.java:85)
        at com.google.gwt.dev.jdt.AbstractCompiler$CompilerImpl.compile
(AbstractCompiler.java:181)
        at com.google.gwt.dev.jdt.AbstractCompiler$CompilerImpl.access
$400(AbstractCompiler.java:71)
        at com.google.gwt.dev.jdt.AbstractCompiler.compile
(AbstractCompiler.java:473)
        at
com.google.gwt.dev.jdt.WebModeCompilerFrontEnd.getCompilationUnitDeclarations
(WebModeCompilerFrontEnd.java:73)
        at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler.precompile
(JavaToJavaScriptCompiler.java:254)
        at com.google.gwt.dev.Precompile.precompile(Precompile.java:
300)
        at com.google.gwt.dev.GWTCompiler.run(GWTCompiler.java:180)
        at com.google.gwt.dev.GWTCompiler.run(GWTCompiler.java:150)
        at com.google.gwt.dev.GWTCompiler$1.run(GWTCompiler.java:119)
        at com.google.gwt.dev.CompileTaskRunner.doRun
(CompileTaskRunner.java:84)
        at
com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger
(CompileTaskRunner.java:78)
        at com.google.gwt.dev.GWTCompiler.main(GWTCompiler.java:126)

Please provide the solution for this problem. i am trying this issue
from couple of days.

Thanks & Regards
Satya

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