Apache Commons Codec

Apache Commons Codec

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.binary.BinaryCodec;
import org.apache.commons.codec.binary.Hex;
import org.apache.commons.codec.digest.DigestUtils;
import org.apache.commons.codec.net.BCodec;
import org.apache.commons.codec.net.QCodec;
import org.apache.commons.codec.net.QuotedPrintableCodec;
import org.apache.commons.codec.net.URLCodec;

public class Main {

  public static void main(String[] args) throws Exception {
    String str = "Hello World";
    byte[] data = str.getBytes();
    
    System.out.println(DigestUtils.md5Hex(str));
    System.out.println(DigestUtils.shaHex(data));
    
    System.out.println(str);
    
    byte[] base64Encoded = Base64.encodeBase64(data);   
    System.out.println(new String(base64Encoded));
    
    char[] hexEncoded = Hex.encodeHex(base64Encoded);
    System.out.println(hexEncoded);   
    byte[] hexDecoded = Hex.decodeHex(hexEncoded);
    System.out.println(new String(hexDecoded));   
    
    
    byte[] base64Decoded = Base64.decodeBase64(base64Encoded);
    System.out.println(new String(base64Decoded));
    
    BinaryCodec bc = new BinaryCodec();
    
    byte[] binEncoded = bc.encode(base64Encoded);
    System.out.println(new String(binEncoded));     
    byte[] binDecoded = bc.decode(binEncoded);
    System.out.println(new String(binDecoded));
    
    
    BCodec bCodec = new BCodec();
    
    String bEncode = bCodec.encode(str);
    System.out.println(bEncode);
    System.out.println(bCodec.decode(bEncode));
    
    QCodec qCodec = new QCodec();
    
    String qEncode = qCodec.encode(str);
    System.out.println(qEncode);
    System.out.println(qCodec.decode(qEncode));
    
    URLCodec urlCodec = new URLCodec();
    
    str = "<&?%;>";
    System.out.println(str);
    
    String urlEncoded = urlCodec.encode(str);
    System.out.println(urlEncoded);
    
    String urlDecoded = urlCodec.decode(urlEncoded);
    System.out.println(urlDecoded);
    
    QuotedPrintableCodec quotedPrintableCodec = new QuotedPrintableCodec();

    str = "[\b\r\n\0]";
    System.out.println(str);
    
    String cpEncoded = quotedPrintableCodec.encode(str);
    System.out.println(cpEncoded);
    
    String cpDecoded = quotedPrintableCodec.decode(cpEncoded);
    System.out.println(cpDecoded);
  }

}
/* -- output --
b10a8db164e0754105b7a99be72e3fe5
0a4d55a8d778e5022fab701977c5d840bbc486d0
Hello World
SGVsbG8gV29ybGQ=
5347567362473867563239796247513d
SGVsbG8gV29ybGQ=
Hello World
00111101010100010100011101100010011110010011100100110010010101100110011100111000010001110110001001110011010101100100011101010011
SGVsbG8gV29ybGQ=
=?UTF-8?B?SGVsbG8gV29ybGQ=?=
Hello World
=?UTF-8?Q?Hello World?=
Hello World
<&?%;>
%3C%26%3F%25%3B%3E
<&?%;>
[
]
[=08=0D=0A=00]
[
]
*/