## Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

### Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

# Question about looping over 2D arrays

The question requires me to fill in the blanks. This is how I have it... What am I doing wrong?

char[][] boggle = { {'C', 'A', 'T'}, {'D', 'R', 'I'}, {'L', 'O', 'G'}};

System.out.printf("-------------%n"); for (int i = 0; i < boggle.length; i++) { for (int j = 0; j < boggle[0].length; j++) { System.out.printf("| %s ", boggle[i][j]); } System.out.printf("|%n-------------%n"); }

Hi Karel

If you look your code you made mistake on the second for loops:

```char[][] boggle = { {'C', 'A', 'T'}, {'D', 'R', 'I'}, {'L', 'O', 'G'}};

System.out.printf("-------------%n"); for (int i = 0; i < boggle.length; i++)
{ for (int j = 0; j < boggle[0].length/*<--here is the problem*/  ; j++)
{ System.out.printf("| %s ", boggle[i][j]); } System.out.printf("|%n-------------%n"); }
```

The j upper limit step is not j < boggle[0].length but it should be j < boggie[i].length like this:

```char[][] boggle = { {'C', 'A', 'T'}, {'D', 'R', 'I'}, {'L', 'O', 'G'}};

System.out.printf("-------------%n"); for (int i = 0; i < boggle.length; i++)
{ for (int j = 0; j < boggle[i].length; j++)
{ System.out.printf("| %s ", boggle[i][j]); } System.out.printf("|%n-------------%n"); }
```

I hope this can help.