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Home/ Questions/Q 381845
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Editorial Team
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Editorial Team
Asked: May 12, 20262026-05-12T15:07:30+00:00 2026-05-12T15:07:30+00:00

I have a small GUI application developed with netbeans. I used the ‘clean and

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I have a small GUI application developed with netbeans.

I used the ‘clean and build’ option to build an executable jar file. .jar file works in my pc. But when i sent the application to my friend he says that it throws ‘cannot find the main class’ error.

what could be the reason?

Thanks in advance…

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  1. Editorial Team
    Editorial Team
    2026-05-12T15:07:30+00:00Added an answer on May 12, 2026 at 3:07 pm

    Open project property, select run and set Main-Class (textfield) attribute.

    EDIT:

    Execute the main class in .jar application,

    java -jar Application.jar

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