Get a byte array in a printable binary form. - Java java.lang

Java examples for java.lang:byte Array to int

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Description

Get a byte array in a printable binary form.

Demo Code

/* This software was developed by employees of the National Institute of
 * Standards and Technology (NIST), an agency of the Federal Government.
 * Pursuant to title 15 United States Code Section 105, works of NIST
 * employees are not subject to copyright protection in the United States
 * and are considered to be in the public domain.  As a result, a formal
 * license is not needed to use the software.
 * /*from  www .j a  v a 2s . com*/
 * This software is provided by NIST as a service and is expressly
 * provided "AS IS".  NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
 * OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
 * AND DATA ACCURACY.  NIST does not warrant or make any representations
 * regarding the use of the software or the results thereof including, but
 * not limited to, the correctness, accuracy, reliability or usefulness of
 * the software.
 * 
 * Permission to use this software is contingent upon your acceptance
 * of the terms of this agreement.
 */
//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        byte[] bytes = new byte[] { 34, 35, 36, 37, 37, 37, 67, 68, 69 };
        System.out.println(writeBytes(bytes));
    }

    /**
     * Get a byte array in a printable binary form.
     * 
     * @param bytes
     *            The byte to be writen.
     * @return A String reprentation of the byte.
     */
    public static String writeBytes(byte[] bytes) {

        StringBuffer stringBuffer = new StringBuffer();

        for (int i = 0; i < bytes.length; i++) {

            // New line every 4 bytes
            if (i % 4 == 0) {

                stringBuffer.append("\n");
            }

            stringBuffer.append(writeBits(bytes[i]) + " ");
        }

        return stringBuffer.toString();

    }

    /**
     * Get a byte array in a printable binary form.
     * 
     * @param bytes
     *            The byte to be writen.
     * @return A String reprentation of the byte.
     */
    public static String writeBytes(byte[] bytes, int packetLength) {

        StringBuffer stringBuffer = new StringBuffer();

        for (int i = 0; i < packetLength; i++) {

            // New line every 4 bytes
            if (i % 4 == 0) {

                stringBuffer.append("\n");
            }

            stringBuffer.append(writeBits(bytes[i]) + " ");

        }

        return stringBuffer.toString();

    }

    /**
     * Get a byte in a printable binary form.
     * 
     * @param b
     *            The byte to be writen.
     * @return A String reprentation of the byte.
     */
    public static String writeBits(byte b) {

        StringBuffer stringBuffer = new StringBuffer();
        int bit = 0;

        for (int i = 7; i >= 0; i--) {

            bit = (b >>> i) & 0x01;
            stringBuffer.append(bit);

        }

        return stringBuffer.toString();

    }
}

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