Converts a 8-bit unsigned int to a byte array - Java java.lang

Java examples for java.lang:byte Array Convert

  1. HOME
  2. Java
  3. java.lang
  4. byte Array Convert

Description

Converts a 8-bit unsigned int to a byte array

Demo Code


//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        int value = 2;
        System.out.println(java.util.Arrays.toString(fromUInt8(value)));
    }/*  w  ww  .  j  ava2  s.  c o  m*/

    /**
     * Converts a 8-bit unsigned int to a byte array
     */
    public static byte[] fromUInt8(int value) {
        if (value < 0) {
            throw new IllegalArgumentException(
                    "Must be less greater than 0");
        }
        return new byte[] { (byte) (value & 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();
    }

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

Related Tutorials