Multidimensional Arrays - Java

If we want to get crazy (and deciding to learn any programming language is a sure indicator that you do), Multidimensional Arrays offer you a way to get there. The following code demonstrates how to declare a two-dimensional array.

Int YourTwoDimensionalArray [] [] = new int [8] [8];

What the above code does is give us an 8x8 array. Think of the way a chess board looks: a grid of 8 rows and 8 columns.

Each of the above boxes would hold two indexes; the left index is used for the row, the right index is used for column

When you allocate memory for a multidimensional array, you only have to set memory for the left dimension. You can allocate the right dimension at a later time, as in the following code.

Int YourTwoDimensionalArray [] [] = new [5] [0]

YourTwoDimensionalArray[0] = new int [2]

YourTwoDimensionalArray[0] = new int [7]

YourTwoDimensionalArray[0] = new int [20]

YourTwoDimensionalArray[0] = new int [25]

YourTwoDimensionalArray[0] = new int [12]

Note also that if you ever need to know the length of an array the following code will print it to your screen:

System.out.println(YourArray.length);