change icon displayed in title bar for a java desktop app

I have a Java Desktop Application project created with NetBeans. The icon that is displayed in my main window's titlebar, by default, is the java logo. The same logo is displayed when I minimize this window to the Taskbar.

I would like to change this icon with one specific to my application, bu开发者_如何学运维t didn't find how.

Thanks

Please have a look at these links:

how-do-i-change-the-default-application-icon-in-java
how-do-i-set-an-applications-icon-globally-in-swing