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Thread: Jar File Not Working.

  1. #1
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    Exclamation Jar File Not Working.

    Sorry If This Is In The Wrong Spot I'm New Here.

    I made a jar File Using CMD/Command Lines "jar cfmv example.jar examlpeMainifest.txt example.class"

    But when i open the jar file nothing happens at all?
    i coded it in eclipse and it worked fine on a exported jar file but when i did it using javac it didn't?

    I Really Need help, if you need anything about my code i will send it asap.


  2. #2
    Java kindergarten chronoz13's Avatar
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    Default Re: Jar File Not Working.

    it is not working? actually its working(just an assumption), running a java program withing an IDE and without it is a different scenario. you just cant see whats going on... a forum mate helped me with that.. i just forget how to run it manually in CMD line to see the error your jar file is encountering, let me look on the forum itself with my previous post. and it might give you the thing that you want.

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    Default Re: Jar File Not Working.

    Okay, Thank You.
    But it is a JFrame By The Way.

  4. #4
    Java kindergarten chronoz13's Avatar
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    Default Re: Jar File Not Working.

    and please clarify the problem, what is it that is NOT WORKING?, how does it not work?, does a window open and it doesnt do what you expect? or when you clicked it nothing really happens?

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    Default Re: Jar File Not Working.

    Quote Originally Posted by chronoz13 View Post
    and please clarify the problem, what is it that is NOT WORKING?, how does it not work?, does a window open and it doesnt do what you expect? or when you clicked it nothing really happens?
    Nothing at all happens lol, dont know how to explain nothing..
    i was expecting my jframe it pop up like before but all it did was nothing?

  6. #6
    Java kindergarten chronoz13's Avatar
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    Default Re: Jar File Not Working.

    lol man, look at this, i hope this help you.. this was my post year ago and Norm a forum mate helped me with it, i solved it by running the jar file outside the IDE itself, and BOOM, i saw tons of Exceptions that i didnt encounter inside the IDE,

    jar file Built(clean and build) perfectly, but not running as jar

  7. #7
    Java kindergarten chronoz13's Avatar
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    Default Re: Jar File Not Working.

    i would like to add, for example case sensitivity with external files like images, a small .png is different with an uppercase .PNG when you run it OUTSIDE your IDE, i really dont know why..

    you might as well look at the similar threads below your thread posts, scroll down your screen below, you will see similar thread titles, that can enhance your search

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    Default Re: Jar File Not Working.

    how do i copy whats in my CMD on windows xp. .-.

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    Default Re: Jar File Not Working.

    Error.jpg

    This is my error. :e

  10. #10
    Java kindergarten chronoz13's Avatar
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    Default Re: Jar File Not Working.

    click on the very top left of the CMD window, you can see CMD options, like edit, copy paste.

  11. #11
    Java kindergarten chronoz13's Avatar
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    Default Re: Jar File Not Working.

    so thats the problem.

    this one might help you man

    http://javarevisited.blogspot.com/20...eption-in.html
    Last edited by chronoz13; January 6th, 2012 at 11:56 PM.

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    Default Re: Jar File Not Working.

    C:\Documents and Settings\Owner\Desktop\MessageBox\Files>jar cfmv MessageBoxCrea
    tor.jar mainClass.txt MessageBoxCreator.class MainClass.class
    added manifest
    adding: MessageBoxCreator.class(in = 445) (out= 329)(deflated 26%)
    adding: MainClass.class(in = 1641) (out= 846)(deflated 48%)

    C:\Documents and Settings\Owner\Desktop\MessageBox\Files>java -jar MessageBoxCre
    ator.jar
    Exception in thread "main" java.lang.NoClassDefFoundError: MainClass$1
    at MainClass.<init>(MainClass.java:60)
    at MessageBoxCreator.main(MessageBoxCreator.java:6)
    Caused by: java.lang.ClassNotFoundException: MainClass$1
    at java.net.URLClassLoader$1.run(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)
    ... 2 more

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    Default Re: Jar File Not Working.

    i think i found my problem: Classpath For Java?

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    Java kindergarten chronoz13's Avatar
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    Default Re: Jar File Not Working.

    yeah i suppose, the system cant locate your classes properly

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    Default Re: Jar File Not Working.

    CLASSPATH

    C:\Program Files\Java\jdk1.7.0_02\bin

    I'm Confused. :[]
    Last edited by Java Programmer; January 7th, 2012 at 12:09 AM.

  16. #16
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    Default Re: Jar File Not Working.

    its not about your JDK, your system cannot locate the classes properly that is why you get NoClassDefFoundError, make sure they are set on the correct folder when you run your jar via CMD

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    Default Re: Jar File Not Working.

    C:\Documents and Settings\Owner\Desktop\MessageBox\Files>java -jar MessageBoxCreator.jar Is Where Its Located?

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    Default Re: Jar File Not Working.

    Quote Originally Posted by chronoz13 View Post
    its not about your JDK, your system cannot locate the classes properly that is why you get NoClassDefFoundError, make sure they are set on the correct folder when you run your jar via CMD
    I Do Thank you For The Help, I've Followed Several Tuts And Snippets On How To Create Jar Files But I Don't Understand Them, Thanks For Trying I Just Don't Understand.

  19. #19
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    Default Re: Jar File Not Working.

    np, its a little bit complicated, im not that much of an expert, i can only share what i had once before. sorry if i cant make you resolve your issue, but be positive, its just there

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    Default Re: Jar File Not Working.

    Quote Originally Posted by chronoz13 View Post
    np, its a little bit complicated, im not that much of an expert, i can only share what i had once before. sorry if i cant make you resolve your issue, but be positive, its just there
    been trying to make a sharable jar file for a month
    time to stop being Positive.

  21. #21
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    Default Re: Jar File Not Working.

    ok let me share the only thing left in my mind, try to re-compile or re-build (clean and build) all, NoClassDefFoundError is being thrown when JVM cant load the class although it can see it(although its not the correct statement to say it),

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    Default Re: Jar File Not Working.

    Quote Originally Posted by Java Programmer View Post
    C:\Documents and Settings\Owner\Desktop\MessageBox\Files>jar cfmv MessageBoxCrea
    tor.jar mainClass.txt MessageBoxCreator.class MainClass.class
    added manifest
    adding: MessageBoxCreator.class(in = 445) (out= 329)(deflated 26%)
    adding: MainClass.class(in = 1641) (out= 846)(deflated 48%)

    C:\Documents and Settings\Owner\Desktop\MessageBox\Files>java -jar MessageBoxCre
    ator.jar
    Exception in thread "main" java.lang.NoClassDefFoundError: MainClass$1
    at MainClass.<init>(MainClass.java:60)
    at MessageBoxCreator.main(MessageBoxCreator.java:6)
    Caused by: java.lang.ClassNotFoundException: MainClass$1
    at java.net.URLClassLoader$1.run(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)
    ... 2 more
    The error message is saying that it cannot find a class called MainClass$1. And - sure enough! - you didn't add it when you created the jar file.

    Try putting all the class files into the jar with:

    C:\Documents and Settings\Owner\Desktop\MessageBox\Files>jar cfmv MessageBoxCreator.jar mainClass.txt *.class

    MainClass$1 will be some anonymous inner class within MainClass - a button handler for example. At any rate it will be created when you compile your program and it has to be added to the jar file.

  23. The Following 2 Users Say Thank You to pbrockway2 For This Useful Post:

    chronoz13 (January 7th, 2012), Java Programmer (January 7th, 2012)

  24. #23
    Java kindergarten chronoz13's Avatar
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    Default Re: Jar File Not Working.

    i hope it solves his problem, now i see myself again, being so dependent on my IDE, i use to forget the things im getting along the road. thanks for that mate, now i have a bunch of tabs in my browser again LOL,

  25. The Following User Says Thank You to chronoz13 For This Useful Post:

    Java Programmer (January 7th, 2012)

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    Default Re: Jar File Not Working.

    Quote Originally Posted by pbrockway2 View Post
    The error message is saying that it cannot find a class called MainClass$1. And - sure enough! - you didn't add it when you created the jar file.

    Try putting all the class files into the jar with:

    C:\Documents and Settings\Owner\Desktop\MessageBox\Files>jar cfmv MessageBoxCreator.jar mainClass.txt *.class

    MainClass$1 will be some anonymous inner class within MainClass - a button handler for example. At any rate it will be created when you compile your program and it has to be added to the jar file.

    OMG THANK YOU THANK YOU THANK YOU THANK YOU~!!!!!!!
    I Thought that was just a random file created by my complier!!!!!
    so i kept deleting it <3 THANK YOU SO MUCH!!!

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    Default Re: Jar File Not Working.

    And Thank You Too@!

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