Member Avatar for vajwee

Non of the java programs which used to run fine in my computer has stopped running. There are no errors in da programs as they still run fine in other computers. All programs gives the folllowing error "Exception in thread "main" java.lang.NoClassDefFoundError"

I set my classpath and the path fine they are set as following :
CLASSPATH := C:\WINDOWS\System32\QTJava.zip\C:\j2sdk1.4.0\bin\;%CLASSPATH%;
path := PATH = %SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;C:\Program Files\Microsoft SQL Server\80\Tools\BINN;C:\j2sdk1.4.0\bin

can some body please help me !!

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  • Latest Post Latest Post by vajwee

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Member Avatar for server_crash

Your classpath is wrong. It should point to the tools.jar file in your jdk directory. When you do this MAKE SURE that you add a period to the end of tools.jar like so:

tools.jar.

Member Avatar for jwenting

tools.jar doesn't need to be (in fact shouldn't be) on the classpath.

What is missing from the classpath is the current directory ('.'). On older machines running Windows 9x that's no problem, on NT based and Unix based operating systems it's required.

Member Avatar for server_crash

tools.jar doesn't need to be (in fact shouldn't be) on the classpath.

Really? I've never been tought different, nor known different...Could you explain?

Member Avatar for jwenting

tools.jar is used internally by the JVM (like rt.jar). It knows where to find it as it knows where to find itself.

Member Avatar for server_crash

But what should the classpath be pointing to then?

Member Avatar for jwenting

to the current directory (.) and any OPTIONAL libraries (so anything not included in the JVM installation itself).

Member Avatar for Kate Albany

There is an error in the classpath you have specified. You have a '\' after QTJava.zip, you need a ';' (semi colon) there.

Like this:

C:\WINDOWS\System32\QTJava.zip;C:\j2sdk1.4.0\bin\;%CLASSPATH%;

Member Avatar for vajwee

thnak u every body for all ur support and time for analysiing my problem. and i am really happy to say the class path specified as :
C:\WINDOWS\System32\QTJava.zip;C:\j2sdk1.4.0\bin\;%CLASSPATH%;
came out to be a success. and i send a special thank to kate.

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