stop a thread from running

[Moya Green]

I am not quite sure about the following methods acting on threads, please correct me. Thank you!
which cannot directly stop a thread from executing?
1)call stop()//false
2)call wait() //false
3)call yield() // false
4)call notify() //true
5)call notifyAll() //true
6)call SetPriority //true
7)call start() on another Thread objeact //false
8)call read method on InoutStream object //false
9)exist from a synchronized block//true

[Barkat Mardhani]

I think 7 and 8 are also true.