Java Boolean to Bit booleanToBit(final byte value, final int bitNbr, final boolean state)

Description

Sets a specific bit in the input byte.

License

Open Source License

Parameter

Parameter	Description
value	The input <code>byte</code>
bitNbr	The specific bit in the <code>byte</code>, from 0 to 7
state	The new state of the specific bit

Return

The input byte with changed bit

Declaration

public static byte booleanToBit(final byte value, final int bitNbr, final boolean state) 

Method Source Code

//package com.java2s;
/**//from   w w w .  j av  a  2  s.co m
 * jModuleConnect is an framework for communication and file management on modem 
 * modules.
 * 
 * This project was inspired by the project TC65SH 
 * by Christoph Vilsmeier: <http://www.vilsmeier-consulting.de/tc65sh.html>
 * 
 * Copyright (C) 2015 sitec systems GmbH <http://www.sitec-systems.de>
 * 
 * This file is part of jModuleConnect.
 * 
 * jModuleConnect is free software: you can redistribute it and/or modify it 
 * under the terms of the GNU Lesser General Public License as published by the 
 * Free Software Foundation, either version 3 of the License, or (at your option) 
 * any later version.
 * 
 * jModuleConnect is distributed in the hope that it will be useful, but WITHOUT 
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more 
 * details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with jModuleConnect. If not, see <http://www.gnu.org/licenses/>.
 */

public class Main {
    private final static byte[] BIT = new byte[] { (byte) 0x01, (byte) 0x02, (byte) 0x04, (byte) 0x08, (byte) 0x010,
            (byte) 0x20, (byte) 0x40, (byte) 0x80 };

    /**
     * Sets a specific bit in the input <code>byte</code>.
     * @param value The input <code>byte</code>
     * @param bitNbr The specific bit in the <code>byte</code>, from 0 to 7
     * @param state The new state of the specific bit
     * @return The input <code>byte</code> with changed bit
     * @since 1.0
     */
    public static byte booleanToBit(final byte value, final int bitNbr, final boolean state) {
        if (bitNbr < 0 || bitNbr > 7) {
            throw new IllegalArgumentException("Parameter bitNbr is out of range (0-7)");
        }

        final byte convertedBit = BIT[bitNbr];

        byte result = value;
        if (state) {
            result |= convertedBit;
        } else {
            result &= ~convertedBit;
        }
        return result;
    }
}

Related

1. booleanToBit(boolean b)
2. booleanToBitflags(boolean[] flags)