public class

JarInputStream

extends ZipInputStream

java.lang.Object
↳	java.io.InputStream
	↳	java.io.FilterInputStream
		↳	java.util.zip.InflaterInputStream
			↳	java.util.zip.ZipInputStream
				↳	java.util.jar.JarInputStream

Class Overview

The input stream from which the JAR file to be read may be fetched. It is used like the ZipInputStream.

Summary

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Inherited Constants

From class java.util.zip.ZipInputStream

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Inherited Fields

From class java.util.zip.InflaterInputStream

From class java.io.FilterInputStream

Public Constructors
	JarInputStream(InputStream stream, boolean verify) Constructs a new `JarInputStream` from an input stream.
	JarInputStream(InputStream stream) Constructs a new `JarInputStream` from an input stream.

Public Methods
Manifest	getManifest() Returns the `Manifest` object associated with this `JarInputStream` or `null` if no manifest entry exists.
ZipEntry	getNextEntry() Returns the next `ZipEntry` contained in this stream or `null` if no more entries are present.
JarEntry	getNextJarEntry() Returns the next `JarEntry` contained in this stream or `null` if no more entries are present.
int	read(byte[] buffer, int offset, int length) Reads up to `length` of decompressed data and stores it in `buffer` starting at `offset`.

Protected Methods
ZipEntry	createZipEntry(String name) creates a ZipEntry with the given name.

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Inherited Methods

From class java.util.zip.ZipInputStream

From class java.util.zip.InflaterInputStream

int	available() Returns whether data can be read from this stream.
void	close() Closes the input stream.
void	fill() Fills the input buffer with data to be decompressed.
void	mark(int readlimit) This implementation overrides the super type implementation to do nothing at all.
boolean	markSupported() Returns whether the receiver implements `mark` semantics.
int	read(byte[] buffer, int off, int nbytes) Reads up to `nbytes` of decompressed data and stores it in `buffer` starting at `off`.
int	read() Reads a single byte of decompressed data.
void	reset() Reset the position of the stream to the last marked position.
long	skip(long nbytes) Skips up to n bytes of uncompressed data.

From class java.io.FilterInputStream

int	available() Returns the number of bytes that are available before this stream will block.
void	close() Closes this stream.
synchronized void	mark(int readlimit) Sets a mark position in this stream.
boolean	markSupported() Indicates whether this stream supports `mark()` and `reset()`.
int	read(byte[] buffer, int offset, int count) Reads at most `count` bytes from this stream and stores them in the byte array `buffer` starting at `offset`.
int	read(byte[] buffer) Reads bytes from this stream and stores them in the byte array `buffer`.
int	read() Reads a single byte from the filtered stream and returns it as an integer in the range from 0 to 255.
synchronized void	reset() Resets this stream to the last marked location.
long	skip(long count) Skips `count` number of bytes in this stream.

From class java.io.InputStream

int	available() Returns the number of bytes that are available before this stream will block.
void	close() Closes this stream.
void	mark(int readlimit) Sets a mark position in this InputStream.
boolean	markSupported() Indicates whether this stream supports the `mark()` and `reset()` methods.
int	read(byte[] b, int offset, int length) Reads at most `length` bytes from this stream and stores them in the byte array `b` starting at `offset`.
int	read(byte[] b) Reads bytes from this stream and stores them in the byte array `b`.
abstract int	read() Reads a single byte from this stream and returns it as an integer in the range from 0 to 255.
synchronized void	reset() Resets this stream to the last marked location.
long	skip(long n) Skips at most `n` bytes in this stream.

From class java.lang.Object

Object	clone() Creates and returns a copy of this `Object`.
boolean	equals(Object o) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Is called before the object's memory is being reclaimed by the VM.
final Class<? extends Object>	getClass() Returns the unique instance of Class which represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait(long millis, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait(long millis) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait() Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object.

From interface java.io.Closeable

Public Constructors

public JarInputStream (InputStream stream, boolean verify)

Constructs a new JarInputStream from an input stream.

Parameters

stream	the input stream containing the JAR file.
verify	if the file should be verified with a `JarVerifier`.

Throws

IOException	If an error occurs reading entries from the input stream.

public JarInputStream (InputStream stream)

Constructs a new JarInputStream from an input stream.

Parameters

stream	the input stream containing the JAR file.

Throws

IOException	If an error occurs reading entries from the input stream.

Public Methods

public Manifest getManifest ()

Returns the Manifest object associated with this JarInputStream or null if no manifest entry exists.

Returns

the MANIFEST specifying the contents of the JAR file.

public ZipEntry getNextEntry ()

Returns the next ZipEntry contained in this stream or null if no more entries are present.

Returns

the next extracted ZIP entry.

Throws

IOException	if an error occurs while reading the entry.

public JarEntry getNextJarEntry ()

Returns the next JarEntry contained in this stream or null if no more entries are present.

Returns

the next JAR entry.

Throws

IOException	if an error occurs while reading the entry.

public int read (byte[] buffer, int offset, int length)

Reads up to length of decompressed data and stores it in buffer starting at offset.

Parameters

buffer	Buffer to store into
offset	offset in buffer to store at
length	number of bytes to store

Returns

Number of uncompressed bytes read

Throws

IOException	if an IOException occurs.

Protected Methods

protected ZipEntry createZipEntry (String name)

creates a ZipEntry with the given name.

Parameters

name	the name of the entry.

Returns

the created ZipEntry.

Interfaces

Classes

Exceptions

JarInputStream

Class Overview

See Also

Summary

Public Constructors

public JarInputStream (InputStream stream, boolean verify)

Parameters

Throws

See Also

public JarInputStream (InputStream stream)

Parameters

Throws

See Also

Public Methods

public Manifest getManifest ()

Returns

public ZipEntry getNextEntry ()

Returns

Throws

public JarEntry getNextJarEntry ()

Returns

Throws

public int read (byte[] buffer, int offset, int length)

Parameters

Returns

Throws

Protected Methods

protected ZipEntry createZipEntry (String name)

Parameters

Returns