Need help creating jar files

[rizzix]

does ur manifest file include a Main-Class field?

[jin]

Also "java MyProgramName" worked for applet but gave "Exception in thread "main" java.lang.NoClassDefFoundError: Database/class" for application

Database is name of program. is there a way around this.

[jin]

Ya it did have a main class field

[rizzix]

post ur manifest...

[jin]

Manifest-Version: 1.0
Created-By: 1.5.0_01 (Sun Microsystems Inc.)
Main-Class: Database.class
Class-Path: F:\Java\Database

[rizzix]

jin wrote:

Manifest-Version: 1.0
Created-By: 1.5.0_01 (Sun Microsystems Inc.)
Main-Class: Database.class
Class-Path: F:\Java\Database

it should be just:

code:

Main-Class: Database

assuming ur using the default package..

[jin]

i made the change and it created the jar but when i try to open it i get error "Could not find Main-Class. Program will exit".

[rizzix]

obviously that assumes Database has the public static void main(String[] args) method.. if it doesn't then it is not the main class.

[1of42]

rizzix wrote:

obviously that assumes Database has the public static void main(String[] args) method.. if it doesn't then it is not the main class.

I bet you that's not the problem... I had this one myself, even though it did have the correct method main signature.

The problem I had was that you must have a newline as the last line in the file; if you don't the manifest doesn't work properly.

[jin]

Database is the main class and also adding the extra line did not help i still got the error

[1of42]

weird. a manifest i used that worked:

code:

Manifest-Version: 1.2 Created-By: 1.4.2_04 (Sun Microsystems Inc.) Main-Class: ReWrite