dump an array of bytes in hex form : Hexadecimal « Data Type « Java






  1. Java
  2. Data Type
  3. Hexadecimal

dump an array of bytes in hex form

      
import java.io.File;
import java.io.FileFilter;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;

/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *  
 *    http://www.apache.org/licenses/LICENSE-2.0
 *  
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License. 
 *  
 */



/**
 * Various string manipulation methods that are more efficient then chaining
 * string operations: all is done in the same buffer without creating a bunch of
 * string objects.
 * 
 * @author <a href="mailto:dev@labs.apache.org">Dungeon Project</a>
 */
public class Main {
  /** Hex chars */
  private static final byte[] HEX_CHAR = new byte[]
      { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };


  /**
   * Helper function that dump an array of bytes in hex form
   * 
   * @param buffer
   *            The bytes array to dump
   * @return A string representation of the array of bytes
   */
  public static final String dumpBytes( byte[] buffer )
  {
      if ( buffer == null )
      {
          return "";
      }

      StringBuffer sb = new StringBuffer();

      for ( int i = 0; i < buffer.length; i++ )
      {
          sb.append( "0x" ).append( ( char ) ( HEX_CHAR[( buffer[i] & 0x00F0 ) >> 4] ) ).append(
              ( char ) ( HEX_CHAR[buffer[i] & 0x000F] ) ).append( " " );
      }

      return sb.toString();
  }

}








Related examples in the same category

1.Convert Decimal to Hexadecimal
2.Convert from decimal to hexadecimal
3.Convert from Byte array to hexadecimal string
4.Convert from decimal to hexadecimal with leading zeroes and uppercase
5.Hex encoder and decoder.
6.Decode hex string to a byte array
7.Returns the hexadecimal value of the supplied byte array
8.Convert byte array to Hex String
9.Convert the bytes to a hex string representation of the bytes
10.Hex decimal dump
11.hex decoder
12.Get Base64 From HEX
13.Converts a hex string to a byte array.
14.append hex digit
15.Get byte array from hex string
16.Check if the current character is an Hex Char <hex> ::= [0x30-0x39] | [0x41-0x46] | [0x61-0x66]
17.Helper function that returns a char from an hex
18.Hex encoder/decoder implementation borrowed from BouncyCastle
19.Java Hex dump Library
20.Util for digesting and encoding bytes/strings.
21.Provide hex utility for converting bytes to hex string
22.Number in hexadecimal format are used throughout Freenet.
23.Convert to/from Hex string
24.This class allows a number to be easily formatted as a hexadecimal number. The representation uses 0-f.
25.This class provides methods for working with hexadecimal representations of data.
26.Hex Util