final variable

/*
RULE: we can declare a variable as final and not necessary declare a variable until it will be use.
we can initialize the variable at the time of use it.
*/

public class Final_Variable
{
public static void main(String ar[])
{
final int x;
System.out.println("hello");   //no error its legal
x=10;
System.out.println(x);
}
}