Java – focus on snippets

I'm looking at an open source project on GitHub. I found the following code line in Java,

static byte[] byteArray = new byte[1 << 11];

Here, we know that 1 < < 11 is just 2048, so I can directly initialize the array by giving the length = 2048, as shown below, static byte [] bytearray = new byte [2048]; Then why write 1 < < direct 11 instead of 2048

Solution

The reason for using bitwise operation is to make it clear that this is a power of 2 I see people confuse constants For example, 8096 is a combination of 8192 and 4096

What I prefer to do is use < < 10 or < < 20 and KB and MB For example, 2 < < 10 for 2 kb