Exception in thread "main" java.lang.NoClassDefFoundError:

I'm getting an exception " Exception in thread "main" java.lang.NoClassDefFoundError: ", but there's a main! My programs all worked yesterday but now applications are giving me this error and wont run. Did my jdk get corrupted?

[243 byte] By [Erik_N] at [2007-9-26 3:35:51]

«« cannot execute a bat file
»» Problem in running applet and swing

# 1

check your class path;in the command promt add this line. The . (dot) is used for current directory.set classpath=%classpath%;.

debashisr at 2007-6-29 12:06:36 >

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# 2

I tried that and SET PATH=C:/jdk1.3/bin in my autoexec bat but nothing changed. The quicktime install put this in

SET QTJAVA="C:\Program Files\JavaSoft\JRE\1.3.1\lib\ext\QTJava.zip"

SET CLASSPATH="C:\Program Files\JavaSoft\JRE\1.3.1\lib\ext\QTJava.zip";.

But applets work and compiling works(just not running apps) so I'm not so sure it's a classpath problem. I'm running Windows ME.

Erik_N at 2007-6-29 12:06:36 >

# 3

I tried putting that line at the end of my autoexec.bat file. Is this what you meant? Can anyone help me, I'm stuck on this one.

Erik_N at 2007-6-29 12:06:36 >

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Exception in thread "main" java.lang.NoClassDefFoundError:

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