Array exception out of bounds

Code Java:

---

import java.util.Scanner;
public class masyvai
{
public void masyvas()
{
//sk – 5 , z – 2,4,6,8
Scanner scan2 = new Scanner(System.in);
int a,b;
 
System.out.printf("Iveskite eiluciu kieki");
a=scan2.nextInt();
System.out.printf("Iveskite stulpeliu kieki");
b=scan2.nextInt();
int mtr[][] = new int[a][b];
 
 
System.out.println(" --------------------------------------------------");
System.out.println("| Sumavimas | Atimtis |");
System.out.println(" --------------------------------------------------");
 
for (int eil = 0; eil < a; eil++)
{
for (int stul = 0; eil < b; stul++)
{
 
System.out.print(" "+mtr[eil][stul]); // error here, wtf???
}
System.out.print("\n");
 
}
scan2.close();
 
}
}

---

What can be the problem here? I really dont understand, I used this code on my netbook (XP win) and it works fine but when i used it on my pc (win7) it crashes and gives me a gift:

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 2
at masyvai.masyvas(masyvai.java:28)

Why are you comparing eil to both a and b in your inner and outer loop? Is that really what you want to be doing in your inner loop?

Hello gabberlt. Welcome to the Java Programming Forums.

The java.lang.ArrayIndexOutOfBoundsException means that your Array Index is Out of Bounds ;)

I would look at the for loops. Try using System.out.println(); to see what's going on.