Java tutorial
//package com.java2s; /* * Copyright (C) 2011, The Android Open Source Project * * 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 bytesToString(byte[] bytes) { if (bytes == null) return ""; StringBuffer sb = new StringBuffer(); for (byte b : bytes) { sb.append(String.format("%02x ", b & 0xFF)); } String str = sb.toString(); if (str.length() > 0) { str = str.substring(0, str.length() - 1); } return str; } }