/*
Please find the required solution
*/
// Point class with x, y
import java.util.ArrayList;
import java.util.List;
class Point {
private int x;
private int y;
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;
}
@Override
public String toString() {
return "{" +
"x=" + x +
", y=" + y +
'}';
}
}
//Point3D class, subclass of Point with z
class Point3D extends Point {
private int z;
public Point3D(int x, int y, int z) {
super(x, y);
this.z = z;
}
public int getZ() {
return z;
}
public void setZ(int z) {
this.z = z;
}
@Override
public String toString() {
return "{" +
"x=" + this.getX() +
", y=" + this.getY() +
", z=" + z +
'}';
}
}
// PointList class
public class PointList {
public static void main(String[] args) {
// define ArrayList point list
List<Point> pointList = new ArrayList<>();
// add point to pointList
pointList.add(new Point(1, 2));
// add point3D(subclass of Point) to pointList
pointList.add(new Point3D(1, 2, 3));
// print PointList
System.out.println("Point List: " + pointList);
}
}
Sample output:
text format separate by 1) 2) Point3D Class Write a class named Point3D that extends the...
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