java.lang.NoClassDefFoundError: MainWindow$1?

[jing]

hi all.

i'm trying to compile a source package, which is needed for my
graduation design. here is its
url:http://gist.cs.berkeley.edu/libgist-2.0/libgist-2.0.tar.gz,
now, i've almost reached the last step: make amdb with the utility
java. when i tried to run amdb.bat including the java command, the
intepreter gave me the following message:

D:\SpatialDatabase\GiST\tools\libgist\bin>java -classpath
"D:\SpatialDatabase\Gi
ST\tools\libgist_\libgist\src\gui;D:\SpatialDatabase\GiST\tools\libgist_\libgist
\src\analysis;D:\SpatialDatabase\GiST\tools\libgist_\libgist\src\amdbgist;D:\Spa
tialDatabase\GiST\tools\libgist_\libgist\src\treeview;D:\jdk1.1.8\lib\classes.zi
p;D:\Swing-1.1.1\swingall.jar" MainWindow
java.lang.NoClassDefFoundError: MainWindow$1
at MainWindow.<init>(MainWindow.java:47)
at MainWindow.main(Compiled Code)

here MainWindow$1.class was created at the same time of MainWindow.
i don't know what does this error mean. actually, i know little about
java.

any help would be most appreciated.

jing.

 

[Thomas Fritsch]

when i tried to run amdb.bat including the java command, the
intepreter gave me the following message:

D:\SpatialDatabase\GiST\tools\libgist\bin>java -classpath
"D:\SpatialDatabase\GiST\tools\libgist_\libgist\src\gui;
D:\SpatialDatabase\GiST\tools\libgist_\libgist\src\analysis;
D:\SpatialDatabase\GiST\tools\libgist_\libgist\src\amdbgist;
D:\SpatialDatabase\GiST\tools\libgist_\libgist\src\treeview;
D:\jdk1.1.8\lib\classes.zip;D:\Swing-1.1.1\swingall.jar" MainWindow
java.lang.NoClassDefFoundError: MainWindow$1
at MainWindow.<init>(MainWindow.java:47)
at MainWindow.main(Compiled Code)

here MainWindow$1.class was created at the same time of MainWindow.
i don't know what does this error mean. actually, i know little about
java.

It means that java tried to get a file "Main$1.class", but didn't find it.
From the error message you also see, that the error occured inside a method
of the MainWindow class. You therefore know, that java *did* find a file
"MainWindow.class", although you don't actually know where.

May be in your "-classpath ..." the directory containing "Main.class" *and*
"Main$1.class" is missing. May also be you copied your file
"MainWindow.class" from one directory into another, but forgot to copy file
"MainWindow$1.class".

 

[Thomas Fritsch]

jing wrote: [...]

java.lang.NoClassDefFoundError: MainWindow$1
at MainWindow.<init>(MainWindow.java:47)
at MainWindow.main(Compiled Code)

[...]
Arrgh, I meant "MainWindow", not "Main". Sorry for the confusion.

It means that java tried to get a file "Main$1.class", but didn't find it.

... tried to get a file "MainWindow$1.class", but didn't find it.

From the error message you also see, that the error occured inside a
method of the MainWindow class. You therefore know, that java *did* find a
file "MainWindow.class", although you don't actually know where.

May be in your "-classpath ..." the directory containing "Main.class"

... the directory containing "MainWindow.class"

*and* "Main$1.class" is missing. May also be you copied your file

*and* "MainWindow$1.class" is missing.

 

[pansy4u]

Yes, you are right, Thomas. I did copied "MainWindow.class" from one
directory into another, but forgot to copy "Mainwindow$1.class"
together. But even if i copied them all to the target directory, the
*same* error occured again!
I'll check the whole compling procedure.
Thank you, Thomas!

jing.