title: Java: What does the first index represent in 2D array?
body: <p>In java, say for example I have <code>char[][] board</code>, what does <code>board.length</code> and <code>board[0].length</code> represent? Is <code>board.length</code> the length of the x axis and y axis for the <code>board[0].length</code>? </p>
  
  <p>Thank you</p>