That this is even remotely acceptable is a sign of how unidealistic the industry has become, compared to Java of 20 years ago which promised write once, run any

That this is even remotely acceptable is a sign of how unidealistic the industry has become, compared to Java of 20 years ago which promised write once, run anywhere. If you did however stick to pure Java 20 years ago, your app probably runs fine now. That is the way things should be. This compatibility breaking from Apple is just a slap in the face.