Java tutorial
//package com.java2s; /** * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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. */ import java.nio.ByteBuffer; public class Main { public static void toString(ByteBuffer bb, StringBuilder sb) { byte[] buf = bb.array(); int arrayOffset = bb.arrayOffset(); int offset = arrayOffset + bb.position(); int origLimit = arrayOffset + bb.limit(); int limit = (origLimit - offset > 128) ? offset + 128 : origLimit; for (int i = offset; i < limit; i++) { if (i > offset) { sb.append(" "); } sb.append(paddedByteString(buf[i])); } if (origLimit != limit) { sb.append("..."); } } public static String paddedByteString(byte b) { int extended = (b | 0x100) & 0x1ff; return Integer.toHexString(extended).toUpperCase().substring(1); } }