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JAR program works in Eclipse but when exported it doesn't work

Foxface918
By Foxface918
in Programming
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When I'm programming in Eclipse the program works fine but when I export it to a runnable JAR file it doesn't work it just shows a JFrame but doesn't show any of the graphics. 

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*uses magic code conjuring powers because there's nothing here to check* *gets nothing because I don't have magic powers* (add some source code, please)

 

Did you make sure any external libraries were included in it?

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2 hours ago, AbydosOne said:

*uses magic code conjuring powers because there's nothing here to check* *gets nothing because I don't have magic powers* (add some source code, please)

 

Did you make sure any external libraries were included in it?

What part of the code do you want I don't think its a issue with the code i think it is a issue with Eclipse or the export setting I tried all three of the exporting options. Do you think it could be because it is being ran on java 1.8 intend of something like 10 or 13.

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9 hours ago, Foxface918 said:

What part of the code do you want I don't think its a issue with the code i think it is a issue with Eclipse or the export setting I tried all three of the exporting options. Do you think it could be because it is being ran on java 1.8 intend of something like 10 or 13.

If you developed it against e.g. Java 10 and you're using some Java 10 features, then yeah it wouldn't run on Java 8. But if you developed against Java 8 it should (usually) run fine on the newer versions. Do you have multiple versions of Java installed?

 

My best bet would be that while you created a runnable JAR, the JAR doesn't include the libraries needed to run it (i.e. a "fat" JAR). In that case you need to specify the libraries it needs to run it when you start it.

 

Other than that: Maybe add some error logging, some console output anything that shows what, if anything, is going wrong?

Remember to either quote or @mention others, so they are notified of your reply

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