cant use runnable

when implementing runnable i cant pass a runnable to a Thread.

Code:

 
class A implements Runnable{
    public void run(){
        System.out.println("run");
    }
public static void main(String[]args){
    A a=new A();
    Thread t=new Thread(a); // this is where the error occurs
    t.start();
}
}

my friends say that it woks fine.i went through a couple of articles on the internet according to them theres no way that code doesnt work.i tried reinstalling jdk that didnt work either.is something wrong with my complier? or is there something i missed? pls help

 

the error end up getting is "cannot find symbol constructor Thread(A)".when i extend Thread it works fine.and if i leave the thread constructor empty(not passing a runnable)it compiles.

 

Hi.

I put it all in a java file called A.java and it works as expected?

What IDE / Development environment are you using?

Best regards
Ewald