[Java 소스] 중복 정의 (Overloading) public class Circle { double radius; public Circle(double radius){ this.radius = radius; } public double calculateArea(){ return calculateArea(3.14*2); } public double calculateArea(double radian){ return (radian/2.0)*radius*radius; } public double getRadius(){ return radius; }}public class Program { public static void main(String[] args){ Circle circle = new Circle..