Java’s applications could make some additional quests in dwm, like blank-windowed UI.
It could be happens due to this.
To fix blank-windowed UI you’ll need to add the following line in your ~/.xinitrc:
Another issue is related to configuration of Netbeans. In my case, plugins were required for jdk installed in non-standard folder.So, the solution was to change netbeans_jdkhome variable in