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I have a JAR file on my mac called Test.jar, and the file works perfectly fine when I click on it. All it does is it just opens a small window, and displays "Test", so it's a simple application (I am new to Java programming).
My question is how do I change the icon of the jar file to a different icon of my choice? I have yet to figure this out on my own, and I don't know what to do. Like I have already stated, I am using a mac, so MS Windows methods are probably different from what I have to do.
As the linked answer indicates, this is platform specific. OSX does allow you to easily package the java application as a native OSX app, though. See http://www.oracle.com/technetwork/articles/javase/javatomac3-137430.html