How I can use method that has capital letters in its name like setDefaultCloseOperation?

[mateusz-krukowski]

How I can use method that has capital letters in its name like setDefaultCloseOperation?

[gaborsch]

I guess you are asking about the Java Binding.

Actually the method name matching is case insensitive, so you can use either setDefaultCloseOperation or setdefaultcloseoperation

You can check the example program how to use it: https://github.com/gaborsch/rocky/blob/master/programs/awt_hello_world.rock