Here you can find the source of toDouble(byte[] data, int offset)
public static double toDouble(byte[] data, int offset)
//package com.java2s; /**/* w w w . ja v a 2 s .c o m*/ * 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. */ public class Main { public static double toDouble(byte[] data, int offset) { long l = toLong(data, offset); return Double.longBitsToDouble(l); } public static long toLong(byte[] bytearray, int offset) { long result = 0; for (int i = offset; i < offset + 8 /* Bytes in long */; i++) { result = (result << 8 /* Bits in byte */) | (0xff & (byte) (bytearray[i] & 0xff)); } return result; } }