Module java.base

Package java.util.zip

Class CheckedOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

java.util.zip.CheckedOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

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.

Since:

1.1

See Also:

• Checksum

Field Summary

Fields declared in class java.io.FilterOutputStream

out

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
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 declared in class java.io.FilterOutputStream

close, flush, write

Methods declared in class java.io.OutputStream

nullOutputStream

Methods declared in class java.lang.Object

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

Constructor Details

CheckedOutputStream

public CheckedOutputStream(OutputStream out,
 Checksum cksum)

Creates an output stream with the specified Checksum.

Parameters:

out - the output stream

cksum - the checksum

Method Details

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

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)

getChecksum

public Checksum getChecksum()

Returns the Checksum for this output stream.

Returns:

the Checksum