Java BitSet To Byte Array bitSetToByteArray(BitSet bitSet, int byteLen)

Description

bit Set To Byte Array

License

Open Source License

Declaration

public static byte[] bitSetToByteArray(BitSet bitSet, int byteLen) 

Method Source Code

//package com.java2s;
/*//from  ww w  . j ava2 s  .co m
Copyright 2015 Rudolf Fiala
    
This file is part of Alpheus AFP Parser.
    
Alpheus AFP Parser is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
Alpheus AFP Parser 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 General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with Alpheus AFP Parser.  If not, see <http://www.gnu.org/licenses/>
*/

import java.util.BitSet;

public class Main {
    public static byte[] bitSetToByteArray(BitSet bitSet, int byteLen) {
        byte[] result = new byte[byteLen];

        for (int i = 0; i < byteLen; i++) {
            for (int j = 7; j >= 0; j--) {
                if (bitSet.length() < (i * 8 + (7 - j)))
                    return result;

                if (bitSet.get(i * 8 + (7 - j)))
                    result[i] |= (0x01 << j);
            }
        }

        return result;
    }
}

Related

1. bitsetToBinary(BitSet set, int n)
2. bitSetToBinaryString(BitSet b, int startBit, int length)
3. bitSetToBinaryString(BitSet strainBitSet)
4. bitSetToByteArray(BitSet bitSet, int bitSetLength)
5. bitSetToByteArray(final BitSet bitSet, final int numBytes)
6. bitSetToBytes(BitSet bs)