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java -jar

Posted on 2004-10-04
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Last Modified: 2013-11-23
I have a jar file called dumbster.jar

This jar file has several classes and a manifest file.
A class with this jar file, SimpleSmtpServer.class , is defined as such:
SimpleSmtpServer implements Runnable
 public void run() {
...

I was having a problem with the manifest file, so I added the following:
Main-Class: SimpleSmtpServer

Now I receive this error:
Exception in thread "main" java.lang.NoClassDefFoundError: SimpleSmtpServer

Now what?
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Question by:Paullkha
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Expert Comment

by:expertmb
ID: 12217334
Main-Class: SimpleSmtpServer

does this class contains main() method in it
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Expert Comment

by:expertmb
ID: 12217379
>>Exception in thread "main" java.lang.NoClassDefFoundError: SimpleSmtpServer
put complete package name
Main-Class: com.abc.def.ghi.SimpleSmtpServer
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Expert Comment

by:sciuriware
ID: 12217783
I believe your jar is meant to act as an applet library.
;JOOP!
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Expert Comment

by:babuno5
ID: 12238972
Hello
Main-Class:
this usually contains the name of the Class which contains the main Function

"main" java.lang.NoClassDefFoundError: SimpleSmtpServer
Usually this error comes when the Class does not contain the main class or
when the classpath is having some problems.
try putting the name of main class
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LVL 24

Expert Comment

by:sciuriware
ID: 12246096
... and an Apllet doesn't contain a main ... because the browser it will run in has the main().
Try to run this jar in an appletviewer !
;JOOP!
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Expert Comment

by:sciuriware
ID: 12246098
I meant   Applet   not Apllet.
;JOOP!
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Author Comment

by:Paullkha
ID: 12248274
 public void run() {
that is all it has , no main


 I will try the Applet - not sure of all of this...
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Accepted Solution

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babuno5 earned 125 total points
ID: 12249922
Hello,
well do u have a applet or a program containing main
well if applet then it can only be executed by a browser or appletviewer
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