困惑的点在于如何用下面一串代码建立
class point
{
double x,y;
public Point(){
x = 0 ;
y = 0 ;
}
public Point(double xx,double yy){
x = xx;
y = yy ;
}
public double getX(){
return x ;
}
public double getY(){
return y;
}
}