Java aplications and old applications must use a backwards compatibility layer that can cause flicker and bad font rendering.
There have been efforts to provide better support for Java applications on the Wayland. For instance, the OpenJDK project has been making progress on implementing native “pure” Wayland toolkit integration not dependent upon XOrg/X11 or XWayland.
but not all toolkits support it natively and few are easy.
There have been significant developments in providing native support for Wayland in various toolkits. For example : Clutter, GLFW 3, SDL, GTK 3.20+, QT5+, EFL, Slint, Iced & OpenJDK. Just to name a few.
While it is true that not all toolkits have full native support, ongoing work is/has largely shifted towards much better Wayland support.
There have been efforts to provide better support for Java applications on the Wayland. For instance, the OpenJDK project has been making progress on implementing native “pure” Wayland toolkit integration not dependent upon XOrg/X11 or XWayland.
There have been significant developments in providing native support for Wayland in various toolkits. For example : Clutter, GLFW 3, SDL, GTK 3.20+, QT5+, EFL, Slint, Iced & OpenJDK. Just to name a few.
While it is true that not all toolkits have full native support, ongoing work is/has largely shifted towards much better Wayland support.