Java - Robot - Random Click 8 POS

I was playing a game named medivia, where i was fishing... That was so simple, click on fishing rod and click on water... But after some hours a problem that i have in my hands attack me, so to do not get that pain again, i search how to use java to fish to me...

I made this code to click on fishing rod And click on a random water spot...

But its not work, showing me this errors when i active: http://ift.tt/2lX2odL

Code: http://ift.tt/2mxVjxc

What i'm doing wrong?