com.helger.commons.io.stream

Class MessageDigestOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

com.helger.commons.io.stream.WrappedOutputStream

com.helger.commons.io.stream.MessageDigestOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class MessageDigestOutputStream
extends WrappedOutputStream

A wrapper around an OutputStream that creates a message digest while writing.

Author:

Philip Helger

See Also:

IMessageDigestGenerator

Field Summary

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

Constructors

Constructor and Description
MessageDigestOutputStream(OutputStream aSourceOS, EMessageDigestAlgorithm eMDAlgorithm)

Method Summary

Modifier and Type	Method and Description
byte[]	getDigest() Get the message digest of this stream.
String	toString()
void	write(int n)

Methods inherited from class com.helger.commons.io.stream.WrappedOutputStream

getWrappedOutputStream

Methods inherited from class java.io.FilterOutputStream

close, flush, write, write

Methods inherited from class java.lang.Object

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

Constructor Detail

MessageDigestOutputStream

public MessageDigestOutputStream(@Nonnull
                                 OutputStream aSourceOS,
                                 @Nonnull
                                 EMessageDigestAlgorithm eMDAlgorithm)

Method Detail

write

public void write(int n)
           throws IOException

Overrides:

write in class FilterOutputStream

Throws:

IOException

getDigest

@Nonnull
 @ReturnsMutableCopy
public byte[] getDigest()

Get the message digest of this stream. Call this only once the writing has been finished. Never call this in the middle of writing a stream, because the digest cannot be updated afterwards.

Returns:

The message digest of this stream. Never null.

toString

public String toString()

Overrides:

toString in class WrappedOutputStream