From the FAQs of both JCreator
one can read that there's no plans to port either of them to anything other than Windows.
I use GIMP
to take screenshots. There's also a program called Xvidcap
for capturing videos.
As for software development, finding IDEs (integrated development environments), even free ones, is easy: type "java ide" (with the quotation marks) in Google
and hit the Search button.
Hmm, let me see, Netbeans, Eclipse, IntelliJ IDEA, Borland JBuilder... The list goes on.