1: 2: /** 3: Class with static methods to perform calculations on circles. 4: */ 5: public class CircleFirstTry 6: { 7: public static final double PI = 3.14159; 8: 9: public static double area(double radius) 10: { 11: return (PI*radius*radius); 12: } 13: 14: public static double circumference(double radius) 15: { 16: return (PI*(radius + radius)); 17: } 18: }