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Thread: Program Runs in Eclipse but Not When Exported

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    Question Program Runs in Eclipse but Not When Exported

    I created a program in Java using Eclipse where a Flow Layout containing a text field and an event handler that when a user types in a username and presses enter, the program connects to a mySQL DB and looks for a matching username and selects the rank of that player and a dialog box pops up saying, "<username>'s rank is <rank>"

    Anyway, it runs perfectly in eclipse but when I export (as a runnable Jar) and having the "Package required libraries in generated Jar" selected, the resulting program only goes to the window where a user can input text but when they press enter, (which is where the program connects to a mySQL DB) it does nothing and the typing cursor just flashes.

    I have installed the Connector/J from mySQL into the environment the Eclipse uses, but how do I package it so it goes with the program and my end users don't have to fuss around installing the Connector/J?

    Of course if you have further questions, please ask, but I feel my code is just fine (no warnings when exported) it just wont run outside of Eclipse.


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    Default Re: Program Runs in Eclipse but Not When Exported

    In case of error, it should throw an exception. Try to run your jar file from command line:

    java -jar YourJar.jar

    to see if there is any exception message thrown in the console.

    If no, make sure you do not eat the exception, throw it or print stack trace instead.

    immutable objects
    Last edited by ha.minh.nam; December 4th, 2011 at 06:30 PM.

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    Default Re: Program Runs in Eclipse but Not When Exported

    I actually solved the problem, Eclipse wasn't packaging the jar with the created jar when I exported the program. All is good now! thanks!

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