Here you can find the source of toHexString(ByteBuffer buffer)
public static String toHexString(ByteBuffer buffer)
//package com.java2s; /*/*from w w w . j a v a 2 s . co m*/ Copyright (C) 2011 monte This file is part of PSP NetParty. PSP NetParty 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/>. */ import java.io.PrintWriter; import java.io.StringWriter; import java.nio.ByteBuffer; public class Main { public static String toHexString(ByteBuffer buffer) { StringWriter sw = new StringWriter(); PrintWriter pw = new PrintWriter(sw); for (int i = buffer.position(); i < buffer.limit(); i++) { byte b = buffer.get(i); pw.format("%02X ", b); } return sw.toString(); } }