How to create Local Constant in Java

// Program to using final variable within method
// to create local constant.
class  FinalVar1
{
public static void main( String args[ ] )
{
 double r = 10.0, a;
 final double PI = 3.14159;
 a = PI * r * r;
 System.out.println("Area of Circle : " + a);
}
}

Output:
Area of Circle : 314.159