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Editorial Team
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Asked: 2026-05-15T23:29:10+00:00

I am compiling my project in GWT with any target . I get the

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I am compiling my project in GWT with any target . I get the following error on Linux and Solaris . I can compile the Samples which came with GWT but get this error .

I am using GWT 2.0.3 and JDK 1.6.17 

 [java] Compiling module com.calix.ex1.webgui.ex1embeddedclient.Ex1EmbeddedGui
 [java] [ERROR] Unexpected
 [java] java.lang.NullPointerException
 [java]     at com.google.gwt.dev.javac.JdtCompiler$FindTypesInCud.visit(JdtCompiler.java:179)
 [java]     at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1253)
 [java]     at org.eclipse.jdt.internal.compiler.ast.QualifiedAllocationExpression.traverse(QualifiedAllocationExpression.java:478)
 [java]     at org.eclipse.jdt.internal.compiler.ast.ReturnStatement.traverse(ReturnStatement.java:262)
 [java]     at org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse(MethodDeclaration.java:239)
 [java]     at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1350)
 [java]     at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1223)
 [java]     at org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.traverse(CompilationUnitDeclaration.java:687)
 [java]     at com.google.gwt.dev.javac.JdtCompiler$CompilerImpl.process(JdtCompiler.java:158)
 [java]     at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:444)
 [java]     at com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:467)
 [java]     at com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater.compile(CompilationStateBuilder.java:142)
 [java]     at com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:281)
 [java]     at com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:182)
 [java]     at com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:280)
 [java]     at com.google.gwt.dev.Precompile.precompile(Precompile.java:502)
 [java]     at com.google.gwt.dev.Precompile.precompile(Precompile.java:414)
 [java]     at com.google.gwt.dev.Compiler.run(Compiler.java:201)
 [java]     at com.google.gwt.dev.Compiler$1.run(Compiler.java:152)
 [java]     at com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:87)
 [java]     at com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:81)
 [java]     at com.google.gwt.dev.Compiler.main(Compiler.java:159)
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1 Answer

  1. Editorial Team

    Maybe an answer here : GWT Issue 4552

    If you neglect to add an import for an
    anonymous class like so:

    FocusPanel dropdown = new FocusPanel();
dropdown.addClickHandler(new BloggiDiBlook() {});

    where class BloggiDiBlook is neither
    in the enclosing class’s package, nor
    imported in the enclosing class’s
    .java file. There ought to be an
    appropriate “Class not found” or
    similar compiler error. Instead, the
    JDT Compiler throws the following
    NullPointerException

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