Problem with creation of jar with external libraries

hi guys, I've no problem with creation of jar,i use this command:
jar -mcf MANIFEST.MF NameFile.jar *.class
my file manifest is this:
Manifest-Version: 1.0
Created-By: Me
Main-Class: NameFile
Now,I've to make a jar file,but i have to use some external libraries in jar format.
I've read on sun tutorial and i've added to manifest this line:
Class-Path: dt.jar formshelp.jar formsrt.jar jh.jar looks-1.3.1.jar substance.jar TableLayout.jar
But the jar file doesn't work, neither with a double click nor with console...
Someone can help me?Thanks!:)

Darkweb wrote:
sorry but,the external libraries that i use are in .jar,what i've to do to include these libraries in my jar?One of 3 things
1) Take them out of the jar, and put them in a folder, preferably a folder in the same folder as the jar
2) Write a custom classloader to load classes from nested jars
3) Extract the contents of all the dependency jars, and jar them all up with your own code
The first is almost always the most preferable, the second one is doable but brittle and resistent to updating dependencies ( you have to release everything for any changes you need, even if it's not a change in your own code ) and the third one is tedious and suffers from the same robustness problems of the second, not to mention that a lot of software licences prohibit you from actually doing it. Do the first one, it's by far the most common and easiest to maintain. I really wouldn't advise the third option, ever, though. Any activity that reduces the modularity of your application is ill-advised

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*

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kojak wrote:
When I compile with Netbeans, the generated jar and jnlp files can run ONLY from the dist/ folder, if I copy it somewhere else in my winchester, it does not start.Unfortunately JNLP requires the base location to be stored in the JNLP file. While that supposedly makes JNLP distributed stuff more secured, it also make them cumbersome and time-consuming to use.
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</jnlp>Both JARs files in that particular JNLP can be signed with a different certificate from the one of the main jar, same wit the JARs listed in the 2 sub-JNLPs that are referenced here.
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Unfortunately NetBeans does not generate such setup so you'll have to find a tool or develop something that does that for you.
Perhaps you should try to post your question in the web start forum Java Web Start & JNLP as well but be prepared to face the all knowledgeable and always helpful but not very user-friendly and definitely not patient with new comers Andrew Thompson.
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Overall I do not like Java Web Start, as said before, it's cumbersome, time-consuming to use, poorly documented, with basically very little to no packaging/helper tool, prone to failure if you make the slightest mistake in the JNLP(s) definition (having a nebulous documentation of its feature does not help) and they've introduced a stream of bugs and errors with each sub-release of Java 6 for the past year and the half that makes programmer's life a hell and JWS a joke compared to other deployment technologies used by competitors.

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