This blog post has been helpful to at least start the investigation: http://www.jroller.com/sjivan/entry/difference_between_classnotfoundexception_and_noclassdeffounderror
However, I haven't found anything yet similar to the cases discussed in the blog entry. Since SwingEventMonitor was last updated for 1.4 I do see the use of Class and ListModel instead of Class<T> and ListModel<T> but it seems like this would not cause a NoClassDefFoundError. Other than visual inspection (which I've done) is there a technique for determining what classes the class loader is attempting to load as SwingEventMonitor is being loaded? Thanks, Pete Pete Brunet wrote: > What is the correct way to fix this? > > Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: > com/sun/java/accessibility/util/SwingEventMonitor > at > sun.awt.windows.accessibility.AccessibleContextMirror.<init>(AccessibleContextMirror.java:583) > > This class lives in jaccess-1_4.jar which I copy to lib\ext and is > documented here: > http://download.oracle.com/docs/cd/E17802_01/j2se/javase/technologies/accessibility/docs/jaccess-1.3/doc/api/com/sun/java/accessibility/util/package-summary.html > > Since (as far as I know) this class isn't part of the OpenJDK I expected > javac to fail but it didn't (at least as far as the log shows): > > ... > # Java sources to be compiled: (listed in file > c:/OPF6CE~1/jdk7/build/WINDOW~2/tmp/sun/sun.awt/awt/.classes.list) > ../../../src/windows/classes/sun/awt/windows/Accessibility/AccessibleContextMirror.java > # Running javac: > c:/OPF6CE~1/jdk7/build/WINDOW~2/J2SDK-~1/bin/javac > -J-XX:ThreadStackSize=768 -J-XX:-PrintVMOptions > -J-XX:+UnlockDiagnosticVMOptions -J-XX:-LogVMOutput -J-client -J-Xmx395m > -J-Xms128m -J-XX:PermSize=32m -J-XX:MaxPermSize=160m -source 7 -target 7 > -encoding ascii -Xbootclasspath:c:/OPF6CE~1/jdk7/build/WINDOW~2/classes > -sourcepath > c:/OPF6CE~1/jdk7/build/WINDOW~2/gensrc;../../../src/windows/classes;../../../src/share/classes > -d c:/OPF6CE~1/jdk7/build/WINDOW~2/classes > @c:/OPF6CE~1/jdk7/build/WINDOW~2/tmp/sun/sun.awt/awt/.classes.list.filtered > /usr/bin/mkdir -p c:/OPF6CE~1/jdk7/build/WINDOW~2/tmp/sun/sun.awt/awt/obj > ... > > The source for SwingEventMonitor isn't in any of the three directories > in the -sourcepath. > > What files should I provide and where should I put them, both for > compile time and run time? > > Thanks, Pete >
