public class CommonMistake1
{
   public static void main(String[] args) 
   {
       double radius = -20;   // Breakpoint here
       double area = -9999;

       if ( radius >= 0 )
       {
          area = 3.14159 * radius * radius;  // Statement 1
          System.out.println(area);          // Statement 2
       }   
   }
}