Question

How can I convert a string to byte? For example, Byte.parseByte("255"); causes NumberFormatException since (for some weird reason) byte is signed in java so the maximum value it can have is 127.

So I need a function such that

public static byte toByte(String input) {
...
}

And for example toByte("255"); should return -1(ie bits: 11111111)

Something like implementation of 2s complement

Answer 1

Use Integer.parseInt("255") and cast the resulting int to a byte:

byte value = (byte)Integer.parseInt("255");