Will not calculate. Just prints out 0.0. public class CircleArea { public void c

Question

Will not calculate. Just prints out 0.0.

public class CircleArea
{
public void circleArea()
{
Scanner input = new Scanner( System.in );

double radius = 0;
double area = 0.0;

System.out.print( "Enter radius: " );
radius = input.nextDouble();

System.out.printf( "Circle Area is %.2f ", area);

} // end of CircleArea method

public double area( double radius )
{
return 3.14 * radius * radius;
} //
} // end of CircleArea Class

public static void main( String[] args )
{
CircleArea circleArea = new CircleArea();
circleArea.circleArea();
} // end of main method
} // end of CircleAreaTest class

Explanation / Answer

public class CircleArea
{
public void circleArea()
{
Scanner input = new Scanner( System.in );

double radius = 0;

System.out.print( "Enter radius: " );
radius = input.nextDouble();

System.out.printf( "Circle Area is %.2f ", area(radius));
} // end of CircleArea method

public double area( double radius )
{
return 3.14 * radius * radius;
} //
} // end of CircleArea Class

public static void main( String[] args )
{
CircleArea circleArea = new CircleArea();
circleArea.circleArea();
} // end of main method
} // end of CircleAreaTest class

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