Named Constant

-
public class finalconstant
{
public static void main(String[] args)
{
final double PI=3.14;           // constant value. can't be change throughout the program.
double radius = 20;
double area = radius * radius * PI;
System.out.println("The area for the circle of radius " + radius + " is " + area);
}
}


Output :-

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