Java Reference
In-Depth Information
To include the class
Point
in the package, the code in
Point.java
will be:
package Geometry;
public class Point {
// Create a point from its coordinates
public Point(double xVal, double yVal) {
x = xVal;
y = yVal;
}
// Create a Point from an existing Point object
public Point(final Point aPoint) {
x = aPoint.x;
y = aPoint.y;
}
// Move a point
public void move(double xDelta, double yDelta) {
// Parameter values are increments to the current coordinates
x += xDelta;
y += yDelta;
}
// Calculate the distance to another point
public double distance(final Point aPoint) {
return Math.sqrt((x - aPoint.x)*(x - aPoint.x)+(y - aPoint.y)*(y - aPoint.y));
}
// Convert a point to a string
public String toString() {
return Double.toString(x) + ", " + y; // As "x, y"
}
// Retrieve the x coordinate
public double getX() {
return x;
}
// Retrieve the y coordinate
public double getY() {
return y;
}
// Set the x coordinate
public void setX(double inputX) {
x = inputX;
}
// Set the y coordinate
public void setY(double inputY) {
y = inputY;
}
// Coordinates of the point
private double x;
private double y;
}
