jDeploy can be configured to produce an app like this, where everything is bundled together. It will even automate the codesign and notarize process. However,

jDeploy can be configured to produce an app like this, where everything is bundled together. It will even automate the codesign and notarize process. However, to do this requires a Mac, and you still need to jump through all Apple's crap for certificates etc... I haven't documented this process officially because I didn't want to confuse the primary message. For app store builds, jpackage is probably the way to go.