File with a lock symbol on it???? :/
 

Alright so I downloaded java jre1.6.0_32, and on the file there is a lock symbol on it. What does that mean? And when i try to make the file executable an error pops up and says

"chmod: changing permissions of 'jre1.6.0_32':Operation not permitted"

How can i fix this?
Thank you

Nautilus will show you who the owner is: probably root. To alter the permissions, you have to be the owner. So you can use "sudo chmod" or "sudo nautilus" and do it that way.