Help -- Trying to create JAR file but not working

Hi everyone
I have created a rather noddy Java program that consists of 4 JComboBox's and 1 JButton on a JFrame.
When the button is clicked a text file is generate with the options that have been selected.
There are severial files that the program uses for this:
gcc.java
OutToFile.java
gccConfirm.java
MyNewWindow.java
main.java
I am using Jcreator and so must use the command line to create the Jar file.
I have never done a jar file before so I did an example with a hello world program and got it working now problem. I did the same for this program and the JAR file is generated without error. I double click on the JAR file to run the application, but nothing happens. I can see the application running in memory but nothing loads on the screen. However if I run it from the command line using Java -jar gcc.jar then everything is ok.
can anyone help me here?
thanks in advance

If you run you .jar from the command line (a shell in unix speak) there
already is a console where your java program can send it's System.out
stuff. Right click on your .jar and select 'properties' (or similar). Note
that your .jar is run by 'javaw'. This executable is similar to the 'java'
executable except that it doesn't open a console for you. Change the
'javaw' command to 'java' and voila, there's your console again.
kind regards,
Jos

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Hi Gurus,
i am using NETBEANS IDE 7.2.
i am developing a project that interacts with databases 10g and COM ports of machine , these all processes are performed by .bat file which i am trying to run from jFramform , code works perfectly .bat file is also called perfectly when i run the project using F6 from the NETBEANS, for testing i placed some dialogue boxes on the form to test it ,
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Thanks Sir ,
You need to first test an example that works like the one in the article.
There are plenty of other examples on the web - find one you like:
http://javapapers.com/core-java/os-processes-using-java-processbuilder/
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javac 1.7.0_07
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Java(TM) SE Runtime Environment (build 1.7.0_07-b11)
Java HotSpot(TM) Client VM (build 23.3-b01, mixed mode, sharing)
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at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
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here is /SMS/SMS
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Help -- Trying to create JAR file but not working

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