Running program with Javax.comm jar and manifest

Hi,

I put my program in a Jar file.
with a bat file I can make it run with the jar file for the serial communication.
(java -cp comm.jar;MyProgram.jar MyProgram)

but with a manifest file I have no clue.
It runs when I double click on it but no serial communication.

Should I insert the Jar of the Javax.comm in the jar file?
and how do I tell the program that it is there?

And the Dll(win32com.dll) I need for the communication, does it need to be included in the jar file? or is next to the Jar file enought? and what about javax.comm.properties?

Thx,

Jewe

Hi,

Have you tried the

Code:

---

Class-Path :

---

attribute, use it like you would use the

Code:

---

Main-Class:

---

attribute.

Byron

If you specify the Main-Path and Class-Path options in the manifest file, you should be able to run your application by executing

Code:

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java -jar MyJar.jar

---

You can put the proprties file in your jar and load it from the class path if you are not going to make any changes to it (it can't easily be changed inside a JAR file).

The other jar files you use and any external DLLs you use should not go in your jar file.

Have a look here:
http://java.sun.com/docs/books/tutor...t/downman.html

Quote:

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Originally Posted by Davey

You can put the proprties file in your jar and load it from the class path if you are not going to make any changes to it (it can't easily be changed inside a JAR file).

---

Ok, it runs but is still unable to find the property file.
Just to be sure I understand what you are saying.
I should also insert javax.comm.properties also in the manifest file?

like:

Code:

---

Class-Path : Javax.comm;javax.comm.properties

---

at the moment I only have

Code:

---

Class-Path : Javax.comm
Main-Class: MyApplication

---

Thx,

Jewe

You don't need to reference the properties file in the manifest, you simply put it in the jar file.

Have a read of the following for details of how to load properties files from within your class path.

http://www.javaworld.com/javaworld/j...-property.html

there is no Main-Path element in a manifest. I think Davey meant to say Main-Class

the Class-Path element of a jar file is a SPACE SEPARATED list of jar files that this jar file will use
you cannot package another jar file inside your application's jar file; the classloader is too retarded to be able to extract it, sorry


Main-Class: com.my.MainThing
Class-Path: javacomm.jar someother.jar jaf.jar javamail.jar




these jars must be accessible either in the same dir as your app jar, or in the lib/ext dir of the JRE that will run your app, or in one of the dirs specified on the CLASSPATH variable of the system

the class-path element in the manifest is not well named. it does not specify any paths, it may be better named (and thought of) as:

List-Of-Classes-And-Jars-My-App-Will-Use: A.class b.jar


these classes and jars must still be found by the classloader using the conventional methods (lib ext, current dir, classpath env var)

Quote:

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Originally Posted by cjard

there is no Main-Path element in a manifest. I think Davey meant to say Main-Class

---

Thats what I was thinking in my head :blush:.

Sorry for any confusion.