অনুশীলন
Design a class named Point which will model a 2D point with `X` and `Y` coordinates.
1. 1.
Two instance variable variables `X` (`int`) and `X` (`int`)
2. 2.
A "no-argument" (or "no-arg") constructor that construct a point at `(0, 0)`.
3. 3.
A constructor that constructs a point with the given `x` and `y` coordinates.
4. 4.
Getter and setter for the instance variables `x` and y.
5. 5.
A method `setXY()` to set both x and y.
6. 6.
A `toString()` method that returns a string description of the instance in the format `"(x,
y)"`.
7. 7.
A method called `distance(int x, int y)` that returns the distance from this point to
another point at the given `(x, y)` coordinates.
8. 8.
An overloaded `distance(Point another)` that returns the distance from this point to
the given `Point` instance another.
For example -
package bd.com.howtocode.java;
/**
* @author Bazlur Rahman Rokon
* @date 6/19/15.
*/
public class Point {
private int x;
private int y;
public Point() {
x = 0;
y = 0;
}
public Point(int x, int y) {
this.x = x;
this.y = y;
}
public int getX() {
return x;
}
public void setX(int x) {
this.x = x;
}
public int getY() {
return y;
}
public void setY(int y) {
this.y = y;
}
public double distance(int x, int y) {
int xDiff = this.x - x;
int yDiff = this.y - y;
return Math.sqrt(xDiff * xDiff + yDiff * yDiff);
}
public double distance(Point p2) {
return distance(p2.getX(), p2.getY());
}
@Override
public String toString() {
return "(" + x + ", " + ")";
}
}
Now write a program that allocates 10 points in an array of `Point`, and initializes to (1, 1), (2, 2), ... (10, 10).