.jar file won't execute

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You could try showing us lines 12 and 24 from your SoundEffect class and showing a content listing of your jar file to demonstrate that the sound resource you're attempting to open is there. 'jar tf yourJarFile.jar' at the command line would do the trick.

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Try printing out the values of soundFileName and the URL so you can verify that they have correct values.

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What about printing out the URLs also. Do it both ways. In the IDE and standalone in the jar.

If it works in Eclipse, then its probably a path problem.

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Your URLs are all to disk files not to the contents of the jar file.

Where was the program executed that produced what you posted in post#7?
In the IDE or from the jar in a test folder.

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Does It work in the IDE? Now do it from the jar in a test folder.

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Run it from the command prompt and copy the contents of the screen here.
java -jar <YOURJARFILENAME>.jar

To copy the contents of the command prompt window:
Click on Icon in upper left corner
Select Edit
Select 'Select All' - The selection will show
Click in upper left again
Select Edit and click 'Copy'

Paste here.

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Just out of interest: I see backslashes in resource paths (because developer uses Windows?), does that work in Java?

What is the null that was printed out?

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Try using /

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What println printed it? Add an id string to ALL the println so you know which one is printing
...println("This is me printing theVar=" + theVariableHere);

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Quote:

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jar:file:/C:/Users/*****/Desktop/Test.jar!/sounds/break.wav
soundFileName println(): sounds/break.wav

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That looks like it is looking in the jar file.

Quote:

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java.lang.IllegalArgumentException: input == null!
at javax.imageio.ImageIO.read(ImageIO.java:1362)
at Fugel.load(Fugel.java:19)

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What is ImageIO.read trying to do? What are its arguments? on line 19

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Change the code to use a URL object and print that out the same as for the sound files.The check that what is printed out is in the jar file with the correct path

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Why does the error keep moving around? What happened to The error in post#21

Please identify which classes are yours in the error message.

Quote:

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Exception in thread "main" java.lang.ExceptionInInitializerError
at Panel.load(Panel.java:37)
at Panel.<init>(Panel.java:31)
at Frame.<init>(Frame.java:23)
at Frame.main(Frame.java:33)
Caused by: java.lang.NullPointerException
at com.sun.media.sound.WaveFileReader.getAudioInputSt ream (WaveFileReader.java:180)
at javax.sound.sampled.AudioSystem.getAudioInputStrea m (AudioSystem.java:1128)
at SoundEffect.<init>(SoundEffect.java:26)
at SoundEffect.<clinit>(SoundEffect.java:12)

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Look at the source lines referred to and see what variable is null. Then find out why it is null.