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}
double distance(int х, int у) {
int dx = this.x - х;
int dy = this.у - у:
return Math,sqrt(dx*dx + dy*dy);
}
double distance(Point p) {
return distance(p.х, p.y);
}
}
class Point3D extends Point { int z;
Point3D(int х, int y, int z) {
super(x, y);
this.z = z;
(
double distance(int х, int y, int z) {
int dx = this.x - х;
int dy = this.y - y;
int dz = this.z - z;
return Math.sqrt(dx*dx + dy*dy + dz*dz);
}
double distance(Point3D other) {
return distance(other.х, other.y, other.z);
}
double distance(int х, int y) {
double dx = (this.x / z) - х;
double dy = (this.у / z) - y;
return Math.sqrt(dx*dx + dy*dy);
}
}
class Point3DDist {
public static void main(String args[]) {
Point3D p1 = new Point3D(30, 40, 10);
Point3D p2 = new Point3D(0, 0, 0);
Point p = new Point(4, 6);
System.out.println("p1 = " + p1.x + ", " + p1.y +
", " + p1.z);
System.out.println("p2 = " + p2.x + ", " + p2.y +
", " + p2.z);
System.out.println("p = " + p.x + ", " + p.y);

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