Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException -

i working tutorial on youtube entitled:

how make java "tower defence" game? part 1 of 3! - "layouting"

the coding working error keeps popping up

exception in thread "awt-eventqueue-0" java.lang.arrayindexoutofboundsexception 

when run code can me please? here code

import java.awt.*;  public class store {     public static int shopwidth = 8 ;     public static int buttonsize = 32;      public rectangle[] button = new rectangle[shopwidth];      public store() {         define();        }      public void define(){         for(int i=0;1<button.length;i++){             button[i] = new rectangle((screen.mywidth/2)-((shopwidth*buttonsize)/2), 10, buttonsize, buttonsize);         }     }     public void draw(graphics g){         for(int i=0;1<button.length;i++){             g.fillrect(button[i].x, button[i].y, button[i].width, button[i].height);         }     } } 

it simple typo.

try i<button.length instead of 1<button.length...

as loop not end until exception occurs.