Question

I made one class for my object:

    public class circles {

    int coor_x;
    int coor_y;

    int ray;


    public circles(int coor_x, int coor_y, int ray) {
    this.coor_x=coor_x;
    this.coor_y = coor_y;
    this.ray =ray ;

    }



  public int getCoor_x() {
        return coor_x;
    }

    public int getCoor_y() {
        return coor_y;
    }

      public int getRay() {
        return ray;
    }



    public void setCoor_x(int coor_x){
    this.coor_x=coor_x;
    }

     public void setCoor_y(int coor_y){
    this.coor_y=coor_y;
    }

      public void setRay(int ray){
    this.ray=ray;
    }


}

But when I wont to make an array of it and fill it with a for, with this code:

 int coor_x=2;
    int coor_y=2;
    int ray=2;
    int i = 0;    

    circles circles_test[]=new circles[10];


    for(i=0; i<=circles.length;){


        circles_test[i]=new circles(coor_x, coor_y, ray+i); //line 30
        System.out.println("Ray of circles: "+circles_test[i].getRay());
    i++;
    }

it works but with errors:
Exception in thread “main” java.lang.ArrayIndexOutOfBoundsException: 10
at circlesObjectCreator.main(circlesObjectCreator.java:30)
Java Result: 1

What I am doing wrong? Is a better why to it? Please help and thank you.

Answer 1

You’re accessing an array with 10 elements, indexed 0-9, with an index running from 0 to the array length, 10, because of the i <= circles.length. You want to use i < circles.length.