I have created a Java project in NetBeans and the JAR file does not have any data, only GUI is appearing. Meanwhile, the project in NetBeans is working fine. I have attached the JAR file of MySQL in classpath and done every solution I could find. I couldn’t get through this problem.

Here are screenshots of my project working in NetBeans and output of the JAR file, respectively.

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Can anyone suggest me any solution. I can provide code as well.

I’ve tried to add mysql connector in project and expected to get JAR file connected to output, but it didn’t work.