In the end Java doesn't achieve "write once, run it anywhere" either.
I guess there might be a way to develop apps for iOS or even PlayStation in Java, but my knees hurt just thinking about how many hoops one needs to jump through.
I’m currently working on migrating Java code from mid-range systems to containers in the cloud. The number of code changes required is near zero. They may not have gotten portability perfectly solved, but it’s pretty darn good compared to many other platforms.
Now, if the industry could just get out of the ridiculous Java 8/11 rut, we’d be in good shape.
I guess there might be a way to develop apps for iOS or even PlayStation in Java, but my knees hurt just thinking about how many hoops one needs to jump through.