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  1. JDK
  2. JDK-6888126

NoClassDefFoundError in constructor since JDK 6; Java 5 okay

    Details

    • Subcomponent:
    • Introduced In Version:
      6
    • CPU:
      x86
    • OS:
      windows_vista

      Description

      FULL PRODUCT VERSION :
      javac 1.6.0_16

      java version "1.6.0_16"
      Java(TM) SE Runtime Environment (build 1.6.0_16-b01)
      Java HotSpot(TM) Client VM (build 14.2-b01, mixed mode, sharing)

      java version "1.5.0_21"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_21-b01)
      Java HotSpot(TM) Client VM (build 1.5.0_21-b01, mixed mode, sharing)

      (Mac OS X 10.6)
      java version "1.6.0_15"
      Java(TM) SE Runtime Environment (build 1.6.0_15-b03-219)
      Java HotSpot(TM) 64-Bit Server VM (build 14.1-b02-90, mixed mode)


      ADDITIONAL OS VERSION INFORMATION :
      Microsoft Windows [Version 6.0.6002]

      Darwin dn0a16674e.sunet 10.0.0 Darwin Kernel Version 10.0.0: Fri Jul 31 22:47:34 PDT 2009; root:xnu-1456.1.25~1/RELEASE_I386 i386

      A DESCRIPTION OF THE PROBLEM :
      Java 5 executes just fine [no thrown exceptions] when instantiating a class [that extends
      java.awt.Component] even if it contains a method that returns an interface class [in the
      same package], as long as that method is not invoked.

      On the other hand, Java 6 throws a NoClassDefFoundError.

      Did not look into whether the return type is an interface is a factor, nor if a constructor
      other than the no-argument is used.

      Works in 1.4.2.

      What.class extending javax.swing.JFrame or java.awt.Frame gives the same result.

      If What.class extends java.util.Properties instead, both Java 5 and Java 6 produce
      the expected result.


      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      1. Compile What.java and SomeInterface.java:

          javac -target 1.4 -source 1.4 What.java SomeInterface.java

      2. Remove SomeInterface.class.

      3. Using 1.5.0:

         java -cp . What

      produces expected result. (No exception thrown.)

      4. Using 1.6.0:

        java -cp . What

      produces actual result. (Exception thrown.)


      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      BEFORE new What()
       AFTER new What()

      ACTUAL -
      BEFORE new What()
      Exception in thread "main" java.lang.NoClassDefFoundError: SomeInterface
              at java.lang.Class.getDeclaredMethods0(Native Method)
              at java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
              at java.lang.Class.getDeclaredMethod(Class.java:1935)
              at java.awt.Component.isCoalesceEventsOverriden(Component.java:5948)
              at java.awt.Component.access$500(Component.java:169)
              at java.awt.Component$3.run(Component.java:5902)
              at java.awt.Component$3.run(Component.java:5900)
              at java.security.AccessController.doPrivileged(Native Method)
              at java.awt.Component.checkCoalescing(Component.java:5899)
              at java.awt.Component.<init>(Component.java:5868)
              at What.<init>(What.java:1)
              at What.main(What.java:5)
      Caused by: java.lang.ClassNotFoundException: SomeInterface
              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)
              ... 12 more


      ERROR MESSAGES/STACK TRACES THAT OCCUR :
      Exception in thread "main" java.lang.NoClassDefFoundError: SomeInterface
              at java.lang.Class.getDeclaredMethods0(Native Method)
              at java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
              at java.lang.Class.getDeclaredMethod(Class.java:1935)
              at java.awt.Component.isCoalesceEventsOverriden(Component.java:5948)
              at java.awt.Component.access$500(Component.java:169)
              at java.awt.Component$3.run(Component.java:5902)
              at java.awt.Component$3.run(Component.java:5900)
              at java.security.AccessController.doPrivileged(Native Method)
              at java.awt.Component.checkCoalescing(Component.java:5899)
              at java.awt.Component.<init>(Component.java:5868)
              at What.<init>(What.java:1)
              at What.main(What.java:5)
      Caused by: java.lang.ClassNotFoundException: SomeInterface
              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)
              ... 12 more


      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      What.java:

      public class What extends java.awt.Component {
        public SomeInterface returnSomeInterface() { return null; }
        public static void main(String[] args) {
          System.out.println("BEFORE new What()");
          new What();
          System.out.println(" AFTER new What()");
        }
      }


      SomeInterface.java:

      interface SomeInterface {
      }

      ---------- END SOURCE ----------

      Release Regression From : 5.0u18
      The above release value was the last known release where this
      bug was not reproducible. Since then there has been a regression.

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              • Assignee:
                bchristi Brent Christian
                Reporter:
                ndcosta Nelson Dcosta (Inactive)
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                • Created:
                  Updated:
                  Resolved:
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