com.highqsoft.helper

Class MD5Helper

java.lang.Object

com.highqsoft.helper.MD5Helper

public class MD5Helper
extends java.lang.Object

This is the helper for MD5 issues.

Since:

$Date: 2017/04/06 13:29:16 $

Version:

$Revision: 1.11 $

Author:

Andreas Hofmann

See Also:

Field Summary

Fields

Modifier and Type	Field and Description
static int	BUFFER_SIZE Use a 100000 byte buffer when creating a buffer for reading.

Constructor Summary

Constructors

Constructor and Description
MD5Helper()

Method Summary

Methods

Modifier and Type	Method and Description
static byte[]	getHash(java.io.File file) Get the MD5 hash code for the given file.
static byte[]	getHash(java.io.InputStream is) Get the MD5 hash code for the given input stream.
static byte[]	getHash(java.lang.String value) Get the MD5 hash code for the given string.
static void	hashOfFilesOfDirectory(java.io.File dir)
static void	main(java.lang.String[] arr)
static java.lang.String	toString(byte[] hash) Get a formatted string from hash array.
static java.lang.String	toString(byte[] hash, java.lang.String format) Get a formatted string from hash array.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

BUFFER_SIZE

public static final int BUFFER_SIZE

Use a 100000 byte buffer when creating a buffer for reading.

See Also:

Constant Field Values

Constructor Detail

MD5Helper

public MD5Helper()

Method Detail

getHash

public static byte[] getHash(java.io.File file)
                      throws java.security.NoSuchAlgorithmException,
                             java.io.IOException

Get the MD5 hash code for the given file.

Parameters:

file - the file to be hashed.

Returns:

the hash code.

Throws:

java.security.NoSuchAlgorithmException

java.io.IOException

getHash

public static byte[] getHash(java.io.InputStream is)
                      throws java.security.NoSuchAlgorithmException,
                             java.io.IOException

Get the MD5 hash code for the given input stream.

Parameters:

is - the input stream to be hashed.

Returns:

the hash code.

Throws:

java.security.NoSuchAlgorithmException

java.io.IOException

getHash

public static byte[] getHash(java.lang.String value)
                      throws java.security.NoSuchAlgorithmException

Get the MD5 hash code for the given string.

Parameters:

value - the value

Returns:

the hash code.

Throws:

java.security.NoSuchAlgorithmException

toString

public static java.lang.String toString(byte[] hash)

Get a formatted string from hash array. This method use the output format "%02x".

Parameters:

hash - the has array

Returns:

the formatted string.

See Also:

MessageFormat.format(java.lang.Object[], java.lang.StringBuffer, java.text.FieldPosition)

toString

public static java.lang.String toString(byte[] hash,
                        java.lang.String format)

Get a formatted string from hash array.

Parameters:

hash - the has array

format - the format string used by the java.text.MessageFormat class

Returns:

the formatted string.

See Also:

MessageFormat.format(java.lang.Object[], java.lang.StringBuffer, java.text.FieldPosition)

hashOfFilesOfDirectory

public static void hashOfFilesOfDirectory(java.io.File dir)
                                   throws java.lang.Exception

Throws:

java.lang.Exception

main

public static void main(java.lang.String[] arr)