Mega Code Archive
Using Objects
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class Point {
double x;
double y;
Point(double xVal, double yVal) {
x = xVal;
y = yVal;
}
Point(final Point oldPoint) {
x = oldPoint.x;
y = oldPoint.y;
}
void move(double xDelta, double yDelta) {
x += xDelta;
y += yDelta;
}
double distance(final Point aPoint) {
return Math.sqrt((x - aPoint.x) * (x - aPoint.x) + (y - aPoint.y) * (y - aPoint.y));
}
public String toString() {
return Double.toString(x) + ", " + y;
}
}
// You can use Point objects in the definition of the class Line:
class Line {
Point start;
Point end;
Line(final Point start, final Point end) {
this.start = new Point(start);
this.end = new Point(end);
}
Line(double xStart, double yStart, double xEnd, double yEnd) {
start = new Point(xStart, yStart);
end = new Point(xEnd, yEnd);
}
double length() {
return start.distance(end);
}
public String toString() {
return "(" + start + "):(" + end + ")";
}
}
public class MainClass{
public static void main(String[] arg){
Line l1 = new Line(new Point(1,2), new Point(3,4));
System.out.println(l1);
}
}
(1.0, 2.0):(3.0, 4.0)
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