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java.util.zip
Class CheckedOutputStream

java.lang.Object
 extended by java.io.OutputStream
 extended by java.io.FilterOutputStream
 extended by java.util.zip.CheckedOutputStream

All Implemented Interfaces:

Closeable, Flushable

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public class CheckedOutputStream
extends FilterOutputStream

An output stream that also maintains a checksum of the data being written. The checksum can then be used to verify the integrity of the output data.

See Also:

Checksum

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Field Summary

Fields inherited from class java.io.FilterOutputStream
out

Constructor Summary
CheckedOutputStream(OutputStream out, Checksum cksum) Creates an output stream with the specified Checksum.

Method Summary
Checksum	getChecksum() Returns the Checksum for this output stream.
void	write(byte[] b, int off, int len) Writes an array of bytes.
void	write(int b) Writes a byte.

Methods inherited from class java.io.FilterOutputStream
close, flush, write

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CheckedOutputStream

public CheckedOutputStream(OutputStream out,
 Checksum cksum)

Creates an output stream with the specified Checksum.

Parameters:

out - the output stream

cksum - the checksum

Method Detail

write

public void write(int b)
 throws IOException

Writes a byte. Will block until the byte is actually written.

Overrides:

write in class FilterOutputStream

Parameters:

b - the byte to be written

Throws:

IOException - if an I/O error has occurred

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write

public void write(byte[] b,
 int off,
 int len)
 throws IOException

Writes an array of bytes. Will block until the bytes are actually written.

Overrides:

write in class FilterOutputStream

Parameters:

b - the data to be written

off - the start offset of the data

len - the number of bytes to be written

Throws:

IOException - if an I/O error has occurred

See Also:

FilterOutputStream.write(int)

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getChecksum

public Checksum getChecksum()

Returns the Checksum for this output stream.

Returns:

the Checksum

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