@ 1 may be generated having a specific coordinate point object // 2 provided a method may be provided three coordinates @ 3 provided that the pitch can be calculated from the square of the origin // according to the above three programming class Point { Double x, y, z; // define a point (point) point class used to represent three-dimensional space (three-coordinate) as in claim point (Double the _x, _y Double, Double _z) { X = the _x; Y = _y; _z = Z; .} can be generated. 1 // point object having a specific coordinate void setX (Double the _x) { X = the _x; } void setY (Double _y) { Y = _y; } void setZ (Double _z) { Z = _z; .} // 2 provides three coordinates may be provided a method Double getDistance (Point P) { return (X - PX) * (xp.x) + (yp.y) * (yp.y) + (ZP. z) * (zp.z); .} //. 3 provide a method for calculating the square of the distance from the origin pitch } public class TestPoint { public static void main (String [] args) { Point P = new new Point (1.0,2.0,3.0); Point P1 Point = new new (0.0,0.0,0.0); System.out.println (p.getDistance (P1)); //14.0 p.setX (5.0); System.out.println (p.getDistance (new new Point (1.0,1.0,1.0 ))); //21.0 } }