Exercise
ArrayList of Points
Objetive
Create a structure named "Point3D" to represent a point in 3D space with coordinates X, Y, and Z.
Create a program that has a menu where the user can:
Add data for one point
Display all the entered points
Exit the program
The program should use ArrayLists instead of arrays.
Example Code
package Point3D;
import java.util.*;
public class Main
{
public final static class Point3D
{
private double x, y, z;
public Point3D clone()
{
Point3D varCopy = new Point3D();
varCopy.x = this.x;
varCopy.y = this.y;
return varCopy;
}
}
public static void main(String[] args)
{
boolean exit = false;
ArrayList list = new ArrayList();
Point3D points = new Point3D();
String answer;
do
{
System.out.println("1. Add data for one point");
System.out.println("2. Display all the entered points");
System.out.println("x. Display all the entered points");
System.out.println();
System.out.print("Enter a option: ");
answer = new Scanner(System.in).nextLine();
if (answer.toLowerCase().equals("x"))
{
exit = true;
}
else if (answer.equals("1"))
{
System.out.print("Point x: ");
list.add(Integer.parseInt(new Scanner(System.in).nextLine()));
System.out.print("Point y: ");
list.add(Integer.parseInt(new Scanner(System.in).nextLine()));
System.out.print("Point z: ");
list.add(Integer.parseInt(new Scanner(System.in).nextLine()));
}
} while (!exit);
}
}