Example on Overloading

• Each method has a signature: its name together with the number and types of its parameters
  

  Methods	Signatures
  String toString() void move(int dx, int dy) void paint(Graphics g)	() (int, int) (Graphics)

  
  
• Two methods can have the same name if they have different signatures. They are overloaded.

Overloading Example

Public class Point {

protected double x, y;

public Point() {

x=0.0; y=0.0;

}

public Point (double x, double y) {

this.x=x; this.y=y;

}

/**calculate the distance between this point and the other point*/

public double distance (Point other) {

double dx=this.x-other.x;

double dy=this.y-other.y;

return Math.sqrt(dx*dx+dy*dy);

}

/**calculate the distance between this point and (x,y)*/
public double distance(double x, double y) {
double dx = this.x - x;
double dy = this.y - y;
return Math.sqrt(dx * dx + dy * dy);
}

/**calculate the distance between this point and the origin*/
public double distance() {
return Math.sqrt(x * x + y * y);
}
// other methods
}