Print an octet string. - Java java.lang

Java examples for java.lang:short

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Description

Print an octet string.

Demo Code


//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(toOctetString(bytes));
    }//w ww .j a va  2  s  .c  om

    /**
     * Print an octet string.  This can be used to encode bytes that may
     * represent an unknown entity.  This will be in the form of:
     *
     *  00-11-22-33 ...
     *
     */
    public static String toOctetString(byte[] bytes) {

        StringBuffer sb = new StringBuffer(4 * bytes.length);
        for (int i = 0; i < bytes.length; i++) {
            sb.append(unsignedByteToInt(bytes[i]));
            if (i + 1 < bytes.length) {
                sb.append("-");
            }
        }

        return sb.toString();

    }

    /**
     * Convert an unsigned byte to an int
     */
    public static int unsignedByteToInt(byte b) {
        return (int) b & 0xFF;
    }

    /**
     * Print a byte array as a String
     */
    public static String toString(byte[] bytes) {

        StringBuilder sb = new StringBuilder(4 * bytes.length);
        sb.append("[");

        for (int i = 0; i < bytes.length; i++) {
            sb.append(unsignedByteToInt(bytes[i]));
            if (i + 1 < bytes.length) {
                sb.append(",");
            }
        }

        sb.append("]");
        return sb.toString();
    }
}

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