title: ClassNotFoundException with Guice 2.0
body: <p>The code below generates an error using Guice 2.0. With Guice 1.0 everything is fine. The JDK is Java 6 update 15.</p>
  
  <pre><code>public class App {
      public static void main(String[] args) {
          Guice.createInjector(new AbstractModule() {
              @Override
              protected void configure() {
                  // just testing 
              }
          });
      }
  }
  </code></pre>
  
  <p>The error is:</p>
  
  <pre><code>Exception in thread "main" java.lang.NoClassDefFoundError: [Lorg/aopalliance/intercept/MethodInterceptor;
      at java.lang.Class.getDeclaredMethods0(Native Method)
      at java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
      at java.lang.Class.getDeclaredMethods(Class.java:1791)
      at com.google.inject.internal.ProviderMethodsModule.getProviderMethods(ProviderMethodsModule.java:78)
      at com.google.inject.internal.ProviderMethodsModule.configure(ProviderMethodsModule.java:70)
      at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:223)
      at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:232)
      at com.google.inject.spi.Elements.getElements(Elements.java:101)
      at com.google.inject.InjectorShell$Builder.build(InjectorShell.java:135)
      at com.google.inject.InjectorBuilder.build(InjectorBuilder.java:102)
      at com.google.inject.Guice.createInjector(Guice.java:92)
      at com.google.inject.Guice.createInjector(Guice.java:69)
      at com.google.inject.Guice.createInjector(Guice.java:59)
      at App.main(App.java:6)
  Caused by: java.lang.ClassNotFoundException: org.aopalliance.intercept.MethodInterceptor
      at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
      at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
      at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
      ... 14 more
  </code></pre>
  
  <p>What can be the problem?</p>