How to handle action on button click?

Question

Java

Good afternoon, ladies and gentlemen.
There are 2 buttons in the Jframe
which should run other Jar files.

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        try {
            Process proc = Runtime.getRuntime().exec("java -jar Park.jar");
        } catch (IOException ex) {
            Logger.getLogger(QUITravel.class.getName()).log(Level.SEVERE, null, ex);
        }
    }                                        

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        try {
            Process proc = Runtime.getRuntime().exec("java -jar Road.jar");
        } catch (IOException ex) {
            Logger.getLogger(QUITravel.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

These files lie next to the main file. Also included in the project.
But I don't see the action. The buttons are silent.

Answer 1

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Just 3 days ago given.