Summary: Inherited Fields | Ctors | Methods | Inherited Methods | [Expand All]

public class

CheckedInputStream

extends FilterInputStream

java.lang.Object
↳	java.io.InputStream
	↳	java.io.FilterInputStream
		↳	java.util.zip.CheckedInputStream

Class Overview

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.

Summary

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Inherited Fields

From class java.io.FilterInputStream

Public Constructors
	CheckedInputStream(InputStream in, Checksum cksum) Creates an input stream using the specified Checksum.

Public Methods
Checksum	getChecksum() Returns the Checksum for this input stream.
int	read() Reads a byte.
int	read(byte[] buf, int off, int len) Reads into an array of bytes.
long	skip(long n) Skips specified number of bytes of input.

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Inherited Methods

From class java.io.FilterInputStream

int	available() Returns an estimate of the number of bytes that can be read (or skipped over) from this input stream without blocking by the next caller of a method for this input stream.
void	close() Closes this input stream and releases any system resources associated with the stream.
synchronized void	mark(int readlimit) Marks the current position in this input stream.
boolean	markSupported() Tests if this input stream supports the `mark` and `reset` methods.
int	read(byte[] b) Reads up to `byte.length` bytes of data from this input stream into an array of bytes.
int	read() Reads the next byte of data from this input stream.
int	read(byte[] b, int off, int len) Reads up to `len` bytes of data from this input stream into an array of bytes.
synchronized void	reset() Repositions this stream to the position at the time the `mark` method was last called on this input stream.
long	skip(long n) Skips over and discards `n` bytes of data from this input stream. This method simply performs `in.skip(n)`.

From class java.io.InputStream

int	available() Returns an estimate of the number of bytes that can be read (or skipped over) from this input stream without blocking by the next invocation of a method for this input stream.
void	close() Closes this input stream and releases any system resources associated with the stream.
synchronized void	mark(int readlimit) Marks the current position in this input stream.
boolean	markSupported() Tests if this input stream supports the `mark` and `reset` methods.
int	read(byte[] b) Reads some number of bytes from the input stream and stores them into the buffer array `b`.
abstract int	read() Reads the next byte of data from the input stream.
int	read(byte[] b, int off, int len) Reads up to `len` bytes of data from the input stream into an array of bytes.
synchronized void	reset() Repositions this stream to the position at the time the `mark` method was last called on this input stream.
long	skip(long n) Skips over and discards `n` bytes of data from this input stream.

From class java.lang.Object

Object	clone() Creates and returns a copy of this object.
boolean	equals(Object obj) Indicates whether some other object is "equal to" this one.
void	finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
final Class<?>	getClass() Returns the runtime class of this `Object`.
int	hashCode() Returns a hash code value for the object.
final void	notify() Wakes up a single thread that is waiting on this object's monitor.
final void	notifyAll() Wakes up all threads that are waiting on this object's monitor.
String	toString() Returns a string representation of the object.
final void	wait() Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.
final void	wait(long timeout, int nanos) Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
final void	wait(long timeout) Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.

From interface java.io.Closeable

Public Constructors

public CheckedInputStream (InputStream in, Checksum cksum)

Creates an input stream using the specified Checksum.

Parameters

in	the input stream
cksum	the Checksum

Public Methods

public Checksum getChecksum ()

Returns the Checksum for this input stream.

Returns

the Checksum value

public int read ()

Reads a byte. Will block if no input is available.

Returns

the byte read, or -1 if the end of the stream is reached.

Throws

IOException	if an I/O error has occurred

public int read (byte[] buf, int off, int len)

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.

Parameters

buf	the buffer into which the data is read
off	the start offset in the destination array `b`
len	the maximum number of bytes read

Returns

the actual number of bytes read, or -1 if the end of the stream is reached.

Throws

NullPointerException	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 occurred

public long skip (long n)

Skips specified number of bytes of input.

Parameters

n	the number of bytes to skip

Returns

the actual number of bytes skipped

Throws

IOException	if an I/O error has occurred

Interfaces

Classes

Exceptions

Errors

CheckedInputStream

Class Overview

See Also

Summary

Public Constructors

public CheckedInputStream (InputStream in, Checksum cksum)

Parameters

Public Methods

public Checksum getChecksum ()

Returns

public int read ()

Returns

Throws

public int read (byte[] buf, int off, int len)

Parameters

Returns

Throws

public long skip (long n)

Parameters

Returns

Throws