Question

OK, here’s my situation :

• I’ve got an app (I’m about to distribute from within the App Store)
• The app depends on an “included” .jar file
• So, for the app to run smoothly, the java runtime must be present on the user OS X installation
• As of recently, Mountain Lion strips any previous Java Runtime installation
• I know that Java can be installed, when it’s needed

However :

• my app just got rejected, seemingly because it “did nothing”
• I suspect the issue is that the testing was done on a Mountain Lion – running Mac, withOUT a Java runtime.

Questions :

• How do we make sure the Java Runtime is installed
• Why doesn’t a call to /usr/bin/java trigger the automatic installation of the JRE?
• How do we make the user install the runtime, before we make any use of it?

Answer 1

Apple does not allow apps that rely on Java being installed. See for example
https://blogs.oracle.com/henrik/entry/oracle_jdk_and_javafx_sdk#comment-1335812118020:

Hi guest – Apple does not disallow Java in the App Store. However,
they do not allow an App Store app to rely on any preinstalled
functionality except what is present in the OS. If you want to ship
your Java app through the Mac App Store, you will have to create a
package consisting of your app and a JRE and upload it to Apple as a
single unit. We explicitly allow redistribution of the Oracle JDK and
JRE in such scenarios; see the license that you accept when you
download the JDK for details.

Perhaps this link helps: Packaging a Java App for Distribution on a Mac