I'm here only because a saw a reference to B4X on the PureBasic forums a week or so ago. Someone was looking for software for Android and B4A was recommended over SpiderBasic. I'm only interested in creating standalone programs for Windows, IOS, Linux, Raspberry Pi, and PureBasic does that very well with no overhead at all. ( but no RAD unfortunately)
For now I'll not proceed any further with B4J so I'll use the ten days I'd allowed to assess on something else, but may come back in the future.