org.etlunit.util.Hex Maven / Gradle / Ivy

Go to download
package org.etlunit.util;

public class Hex
{
	public static String hexEncode(byte[] bytes)
	{
		StringBuffer buffer = new StringBuffer();

		for (int i = 0; i < bytes.length; i++)
		{
			int b = (int) bytes[i] & 0xFF;

			buffer.append(makeHex(b / 0X10));
			buffer.append(makeHex(b % 0X10));
		}

		return buffer.toString();
	}

	public static char makeHex(int b)
	{
		switch (b)
		{
			case 0x0:
				return '0';
			case 0x1:
				return '1';
			case 0x2:
				return '2';
			case 0x3:
				return '3';
			case 0x4:
				return '4';
			case 0x5:
				return '5';
			case 0x6:
				return '6';
			case 0x7:
				return '7';
			case 0x8:
				return '8';
			case 0x9:
				return '9';
			case 0xa:
				return 'A';
			case 0xb:
				return 'B';
			case 0xc:
				return 'C';
			case 0xd:
				return 'D';
			case 0xe:
				return 'E';
			case 0xf:
				return 'F';
			default:
				throw new IllegalArgumentException("Bad char: " + b);
		}
	}
}