Here you can find the source of dump(byte[] buffer)
public static String dump(byte[] buffer)
//package com.java2s; /*/*w w w. j ava 2 s. co m*/ * Copyright (C) 2012 uPhyca Inc. * * Base on previous work by * Copyright (C) 2011 BRILLIANTSERVICE Co., Ltd. & RT Corporation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ public class Main { public static String dump(byte[] buffer) { StringBuilder b = new StringBuilder(buffer.length * 3); for (int i = 0, num = buffer.length; i < num; ++i) { if (i > 0) b.append(" "); b.append(String.format("%02X", buffer[i])); } return b.toString(); } }