Anele Skhosana 220049255
Question 2
Public class Point3D extends Point{
public double z;
public Point3D(){
this.z =0.0;
}
public Point3D(double x,double y,double z){
super(x,y);
this.z = z;
}
public double getZ(){
return z;
}
Public void setZ(double z){
this.z = z;
}
public String toString(){
return”(“+super.getX() + ”,” + super.getY() + “,” + z +”)”;
}
public double distance(point p){
return (int)Math.sqrt(Math.pow(p.getX() - getX(), 2)+ Math.pow(p.getY()getY(),2)+Math.pow(((Point3D)p).z - this.getZ(),2));
}
public boolean equals(Object o){
if (o instanceof Point3D ){
Point3D p = ((Point3D)o);
if(p.z == this.z &&
p.getX() == this.getX() & p.getY() == this.getY())
return true;
else
return false;
}
else0 return false;
}
}