I've just install Greenfoot and I try to using it!
Before Install it, I move a directory file settup to /usr/lib/jvm/java-6-sun-1.6.0.16/greenfoot
and open terminal and type:
move to the directory I copied the installation file to and run the following command:
sudo java -jar Greenfoot-generic-156.jar
and after install completly, file excute in a directory :
/usr/lib/jvm/java-6-sun-1.6.0.16/greenfoot
So , I open terminal and type:
sudo ./greenfoot
The message
you not able to create object or execute methods(read-only)
and I try to login as root to permission for all user to use
chmod 777 file excute
But, it not work