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Java

Posted by Henning Bang Halvorsen
Henning Bang Halvorsen
16,239 Points

This loop should not run, right?

while((col+i<=10 && mP2Board[row][col+i]!='~' && i<5)){ if(mP2Board[row][col+i] == 'X'){ undiscoveredHits += 1; } else if(mP2Board[row][col+i] == 'H'){ alreadyHit += 1; } i++; }

This is a loop in my Java-program. I am making a Battleship game, and this is one of like 8 loops to check the coordinates around the one you hit.

Anyway, when I enter the coordinate: row=0 and col= 7, 8 or 9, the program crashes!! And I just can't figure out why!

There are two gameboards in my program, but the error only occurs on the first board!

If you need any more code, I will provide it.

The error I get is btw: Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 10

I'm trying to access a 2d array with 10 elements in both dimesions: char[10][10]

Hope anyone can solve this silly case!

  • Henning
Henning Bang Halvorsen
Henning Bang Halvorsen
16,239 Points

Hah! I fixed it! How could I be so blind! I allowed col+i to be 10! Which is out of bounds. Sweet!