class Point {
int x, y;
void setX(int xValue) { x = xValue; }
void setY(int yValue) { y = yValue; }
int getX() { return(x); }
int getY() { return(y); }
void move(int xValue, int yValue) {
x += xValue;
y += yValue;
}
}
class Circle {
Point center = new Point();
int radius;
void setRadius(int r) { radius = r; }
void setCenter(int x, int y) {
center.setX(x);
center.setY(y);
}
int getRadius() { return(radius); }
int getCenterX() { return(center.getX()); }
int getCenterY() { return(center.getY()); }
double getArea() { return(Math.PI * radius * radius); }
}
class ClassTest {
public static void main(String args[]) {
Circle c1 = new Circle(), c2;
c2 = new Circle();
c1.setRadius(5);
c1.setCenter(10, 10);
c2.setRadius(10);
c2.setCenter(20, 20);
System.out.println("c1(x,y,r): (" + c1.getRadius() + ","
+ c1.getCenterX() + ","
+ c1.getCenterY() + ")");
System.out.println("c2(x,y,r): (" + c2.getRadius() + ","
+ c2.getCenterX() + ","
+ c2.getCenterY() + ")");
}
}
/*
* Results:
D:\AIIT\JAVA\Working\07>java ClassTest
c1(x,y,r): (5,10,10)
c2(x,y,r): (10,20,20)
D:\AIIT\JAVA\Working\07>
*/
위 내용중 .. Circle c1 = new Circle(), c2; 이부분에서 Circle 인스턴스를 생성하고 c1 클래스 참조 변수가 참조할수 있도록 선언하고 콤마로 c2가 이어지는데 이건 뭥가요.. |
3198, 
1/160 
