/** * IntConverter * * This class PRovides methods to convert int into byte array and * byte array back into int. * public class IntConverter {
/** * * Method converting int into byte array. * * @param number The int value to be converted. * */
public static byte[] toByteArray(int number) { int temp = number; byte[] b=new byte[4]; for (int i = b.length - 1; i > -1; i--) { b[i] = new Integer(temp & 0xff).bytevalue(); temp = temp >> 8; } return b; }
* Method converting byte array into int. * * @param The byte array to be converted. * */
public static int toInteger(byte[] b) { int s = 0;
for (int i = 0; i < 3; i++) { if (b[i] > 0) s = s + b[i]; else s = s + 256 + b[i]; s = s * 256; }
if (b[3] > 0) s = s + b[3]; else
s = s + 256 + b[3];
return s; }
// Testing program.
public static void main(String[] args) { IntConverter abc = new IntConverter(); int s = -1121115678; byte[] b = abc.toByteArray(s); for (int i = 0; i <= 3; i++) System.out.println(b[i]);
