When comparing Xojo vs Java / Swing, the Slant community recommends Java / Swing for most people. In the question“What are the best cross-platform GUI toolkits?” Java / Swing is ranked 3rd while Xojo is ranked 17th.
Ranked in these QuestionsQuestion Ranking
Pro Easy to use
Easy to make compiled native apps.
Pro Several look and feels available
Pro Part of Java
Swing is part of the Java API.
Pro Very good and powerful API
E.g. separate models.
Pro Powerful controls
E.g. JTable which works fine on every platform with very large row counts, e.g. 100.000+.
Con Subscription-based/Not free
Using this product you're betting the company will still be around. If they get bought out by an enterprise that wants to use the tech internally, all they need to do is stop offering subscriptions and suddenly you're scrambling to rebuild your entire app on other technology.
Con No Android support
They plan to eventually support Android, but for now, they only support iOS.
Con No real native look
Though the importance of the native look seems to have dropped the last years by the raise of in-browser-applications.