HexHelper - friendlyhj/ZenUtils GitHub Wiki
HexHelper can interconvert of hexadecimal strings and decimal integers
You'd better import the package to avoid errors and write script easier.
import mods.zenutils.HexHelper;
// String toHexString(int i) DEC => HEX
// int toDecInteger(String Hex) HEX => DEC
HexHelper.toDecInteger("ABCDEF"); // return 11259375
HexHelper.toHexString(114514); // return "1bf52"