Adobe Flash Builder might be a bit more popular than BlueJ. We know about 1 link to it since March 2021 and only 1 link to BlueJ. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
For the record, I find the teaching IDE BlueJ very easy to use and try things out in JavaFX. It is very light to use as it isn't designed as a normal IDE but you can simply write a JavaFX class and right-click to run as it. Source: almost 3 years ago
Just in case, see if this page helps: https://helpx.adobe.com/download-install/kb/download-availability.html. Source: over 1 year ago
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