Convert byte array to Hex String : Hexadecimal « Data Type « Java

Convert byte array to Hex String


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import java.util.Random;

public class StringUtils

   *  Generates a hexadecimal string from an array of bytes.  For
   *  example, if the array contains { 0x01, 0x02, 0x3E }, the resulting
   *  string will be "01023E".
   * @param bytes A Byte array
   * @return A String representation
   * @since 2.3.87
  public static String toHexString( byte[] bytes )
      StringBuffer sb = new StringBuffer( bytes.length*2 );
      for( int i = 0; i < bytes.length; i++ )
          sb.append( toHex(bytes[i] >> 4) );
          sb.append( toHex(bytes[i]) );

      return sb.toString();
  private static char toHex(int nibble)
      final char[] hexDigit =
      return hexDigit[nibble & 0xF];



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