Page 28 - JAVA Programming

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Symbolic Constant

 Symbolic Constant refer to the variable name having value which
cannot be modified/change during the entire lifetime of the program.
 For Example, pi = 3.14 now the pi can be used instead of 3.14. For the
conversion symbolic names are written in CAPITAL to distinguish

from another variable name.
 After declaration of symbolic constants, they should not be resigned
any other value. Symbolic constants cannot be declared inside a
method. They should be used only as class data member in the
beginning of the class

Syntax : final data_type symbolic_name=value;

class Circle
{
final double PI=3.14;
int radius;
void accept(int r)
{
radius=r;
}
void display()
{
double area=PI*radius;
System.out.println("Radius is :"+radius)
System.out.println("Area of Circle is :"+area);
}
public static void main(String args[])
{
Circle c=new Circle();
c.accept(5);
c.display();
}
}