initialization_with_size.md

Initializion with Size

The Nintendo GameBoy had a screen resolution of 160 x 144. To store the value of each pixel¹ you would need an array 23,040 items long.

To support this without you writing the word false 23,040 times, arrays can be made with just by giving a size and skipping the initializer.

boolean[] pixels = new boolean[23040];

So you have to say new followed by the type of element in the array, [, the size of the array and ].

Footnotes

1. The original GameBoy was technically capable of seven shades of gray per pixel, so in this example boolean implies a black and white image. ↩