public class CheckedInputStream extends FilterInputStream
An input stream that also maintains a checksum of the data being read. The checksum can then be used to verify the integrity of the input data.
Checksum
in
public CheckedInputStream(InputStream in, Checksum cksum)
Creates an input stream using the specified Checksum.
in
- the input streamcksum
- the Checksumpublic int read() throws IOException
Reads a byte. Will block if no input is available.
read
in class FilterInputStream
IOException
- if an I/O error has occurredFilterInputStream.in
public int read(byte[] buf, int off, int len) throws IOException
Reads into an array of bytes. If len
is not zero, the method blocks until some input is available; otherwise, no bytes are read and 0
is returned.
read
in class FilterInputStream
buf
- the buffer into which the data is readoff
- the start offset in the destination array b
len
- the maximum number of bytes readNullPointerException
- If buf
is null
.IndexOutOfBoundsException
- If off
is negative, len
is negative, or len
is greater than buf.length - off
IOException
- if an I/O error has occurredFilterInputStream.in
public long skip(long n) throws IOException
Skips specified number of bytes of input.
skip
in class FilterInputStream
n
- the number of bytes to skipIOException
- if an I/O error has occurredpublic Checksum getChecksum()
Returns the Checksum for this input stream.
© 1993–2017, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.