Thread: Create an Array wich represent Classes

Not sure wheter to post it here or not, but I've got a question.
I'm Trying to make the following:

A Class called Point with the methods:
SetPoint() //Sets pointx to 0 and pointy to 0
SetPointNumber(int x, int y) //Set pointx to x and pointy to y
Print() //Print pointx & pointy

A Class called Shape with the methods:
ShapeCreate() - This must create 3 points (an array) and set the point x & y to 0.

I've got the following:

class Point {
  int x, y;
  void Point() {
    x = 0;
    y = 0;
  }
  void Set(int x, int y) {
    this.x  = x;
    this.y  = y;
  }
  void Print() {
    System.out.println("x = " + x + "\nY = " + y);
  }
}
 
class Shape {
  void Shape() {
    Point Points[] = new Point[3];
 
    Point[1].Print();
    Point[2].Print();
    Point[3].Print();
 
  }
}
 
public class Practicum4VeelHoek {
  public static void main(String[] args) {
    Shape shape = new Shape();
 
  }
}

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 3
at practicum.pkg4.veelhoek.Veelhoek.Init(Practicum4Ve elHoek.java:29)
at practicum.pkg4.veelhoek.Practicum4VeelHoek.main(Pr acticum4VeelHoek.java:50)
Java Result: 1

Does anybody know what I'm doing wrong

Array indexes start at zero. So an array of size 3 will have indexes 0, 1, and 2. Using 3 as an index is accessing the fourth element, which a length 3 array obviously doesn't have.

Recommended reading: http://download.oracle.com/javase/tu...ts/arrays.html

In the future, you might want to abide by the standard naming conventions. Methods and variables start with a lower-case letter, classes and constructors start with an upper-case letter. It might seem trivial, but it makes your code much harder to read if you don't follow the guidelines.