Here you can find the source of byteToUnsigned(byte signed)
public static short byteToUnsigned(byte signed)
//package com.java2s; /*//from www . j av a 2s. c om * #%L * mfz-binlog * %% * Copyright (C) 2012 mfizz * %% * 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. * #L% */ public class Main { public static short byteToUnsigned(byte signed) { if (signed >= 0) { return signed; } else { return (short) (256 + (short) signed); } } }