error creating jar file [closed]

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when I run my java project in eclipse by run main method it work properly.but when I create an executable jar file from that and run it, it didn't work properly.what is the reason for that.there is no error massages. my application is a swing application. in interface of the application has images.when I create the jar file and run it.some images are not loading.please help me.

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You probably didn't create the correct manifest file to add to your JAR. You need to specify what the main class is and what the classpath will be.