Java tutorial
/* * SlimePortal * Copyright (C) 2014 Sander Gielisse * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package me.bigteddy98.slimeportal.protocol; import io.netty.buffer.ByteBuf; import me.bigteddy98.slimeportal.SlimeLogger; public class BufferUtils { public static void printBufferHex(String name, ByteBuf buf) { buf.markReaderIndex(); byte[] array = new byte[buf.readableBytes()]; buf.readBytes(array, 0, buf.readableBytes()); SlimeLogger.debug("Buffer hex data for name " + name + " " + getHexString(array)); buf.resetReaderIndex(); } private static final char[] hex = "0123456789ABCDEF".toCharArray(); public static String getHexString(byte[] hexArray) { char[] hexChars = new char[hexArray.length * 3]; int v; for (int j = 0; j < hexArray.length; j++) { v = hexArray[j] & 0xFF; hexChars[j * 3] = hex[v >>> 4]; hexChars[j * 3 + 1] = hex[v & 0x0F]; hexChars[j * 3 + 2] = ' '; } return new String(hexChars); } }