com.helger.commons.io.streams

Class HashingOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

com.helger.commons.io.streams.WrappedOutputStream

com.helger.commons.io.streams.HashingOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class HashingOutputStream
extends WrappedOutputStream

A wrapper around an OutputStream that performs a hashing while writing.

Author:

Philip Helger

See Also:

IMessageDigestGenerator

Field Summary

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

Constructors

Constructor and Description
HashingOutputStream(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.streams.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

HashingOutputStream

public HashingOutputStream(@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
public byte[] getDigest()

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

Returns:

The message digest of this stream.

toString

public String toString()

Overrides:

toString in class WrappedOutputStream