blank finals not working in this case

[daudiam]

class R2
{
	final int t;
	void doit(){
		t=7;
	}
}

Blank finals allow us to declare a final variable without explicitly initializing it. We can initialize it only once later. Then, why is th above code not working ?

[JamesCherrill]

A blank final var must be initialised in all constructors - ie it must have a value by the time the containing instance has been initialised.

[~s.o.s~]

Because:

A blank final instance variable must be definitely assigned at the end of every constructor of the class in which it is declared; otherwise a compile-time error occurs.

[daudiam]

Thanks a lot.