Most visited

Recently visited

Results for

Added in API level 1

JarFile

public class JarFile
extends ZipFile

java.lang.Object
↳	java.util.zip.ZipFile
	↳	java.util.jar.JarFile

The JarFile class is used to read the contents of a jar file from any file that can be opened with java.io.RandomAccessFile. It extends the class java.util.zip.ZipFile with support for reading an optional Manifest entry. The Manifest can be used to specify meta-information about the jar file and its entries.

Unless otherwise noted, passing a null argument to a constructor or method in this class will cause a NullPointerException to be thrown.

See also:

Summary

Constants
`String`	`MANIFEST_NAME` The JAR manifest file name.

Inherited constants

From class


    java.util.zip.ZipFile

Public constructors
`JarFile(String name)` Creates a new `JarFile` to read from the specified file `name`.
`JarFile(String name, boolean verify)` Creates a new `JarFile` to read from the specified file `name`.
`JarFile(File file)` Creates a new `JarFile` to read from the specified `File` object.
`JarFile(File file, boolean verify)` Creates a new `JarFile` to read from the specified `File` object.
`JarFile(File file, boolean verify, int mode)` Creates a new `JarFile` to read from the specified `File` object in the specified mode.

Public methods
`Enumeration<JarEntry>`	`entries()` Returns an enumeration of the zip file entries.
`ZipEntry`	`getEntry(String name)` Returns the `ZipEntry` for the given entry name or `null` if not found.
`InputStream`	`getInputStream(ZipEntry ze)` Returns an input stream for reading the contents of the specified zip file entry.
`JarEntry`	`getJarEntry(String name)` Returns the `JarEntry` for the given entry name or `null` if not found.
`Manifest`	`getManifest()` Returns the jar file manifest, or `null` if none.

Inherited methods

From class


  
    java.util.zip.ZipFile

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(long millis, 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 millis)` 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.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

From interface


  
    java.io.Closeable

From interface


  
    java.lang.AutoCloseable

Constants

MANIFEST_NAME

Added in API level 1

String MANIFEST_NAME

The JAR manifest file name.

Constant Value: "META-INF/MANIFEST.MF"

Public constructors

JarFile

Added in API level 1

JarFile (String name)

Creates a new JarFile to read from the specified file name. The JarFile will be verified if it is signed.

Parameters
`name`	`String`: the name of the jar file to be opened for reading

Throws
`IOException`	if an I/O error has occurred
`SecurityException`	if access to the file is denied by the SecurityManager

JarFile

Added in API level 1

JarFile (String name, 
                boolean verify)

Creates a new JarFile to read from the specified file name.

Parameters
`name`	`String`: the name of the jar file to be opened for reading
`verify`	`boolean`: whether or not to verify the jar file if it is signed.

Throws
`IOException`	if an I/O error has occurred
`SecurityException`	if access to the file is denied by the SecurityManager

JarFile

Added in API level 1

JarFile (File file)

Creates a new JarFile to read from the specified File object. The JarFile will be verified if it is signed.

Parameters
`file`	`File`: the jar file to be opened for reading

Throws
`IOException`	if an I/O error has occurred
`SecurityException`	if access to the file is denied by the SecurityManager

JarFile

Added in API level 1

JarFile (File file, 
                boolean verify)

Creates a new JarFile to read from the specified File object.

Parameters
`file`	`File`: the jar file to be opened for reading
`verify`	`boolean`: whether or not to verify the jar file if it is signed.

Throws
`IOException`	if an I/O error has occurred
`SecurityException`	if access to the file is denied by the SecurityManager.

JarFile

Added in API level 1

JarFile (File file, 
                boolean verify, 
                int mode)

Creates a new JarFile to read from the specified File object in the specified mode. The mode argument must be either OPEN_READ or OPEN_READ | OPEN_DELETE.

Parameters
`file`	`File`: the jar file to be opened for reading
`verify`	`boolean`: whether or not to verify the jar file if it is signed.
`mode`	`int`: the mode in which the file is to be opened

Throws
`IOException`	if an I/O error has occurred
`IllegalArgumentException`	if the `mode` argument is invalid
`SecurityException`	if access to the file is denied by the SecurityManager

Public methods

entries

Added in API level 1

Enumeration<JarEntry> entries ()

Returns an enumeration of the zip file entries.

Returns
`Enumeration<JarEntry>`	an enumeration of the ZIP file entries

getEntry

Added in API level 1

ZipEntry getEntry (String name)

Returns the ZipEntry for the given entry name or null if not found.

Parameters
`name`	`String`: the jar file entry name

Returns
`ZipEntry`	the `ZipEntry` for the given entry name or `null` if not found

Throws
`IllegalStateException`	may be thrown if the jar file has been closed

See also:

ZipEntry

getInputStream

Added in API level 1

InputStream getInputStream (ZipEntry ze)

Returns an input stream for reading the contents of the specified zip file entry.

Parameters
`ze`	`ZipEntry`: the zip file entry

Returns
`InputStream`	an input stream for reading the contents of the specified zip file entry

Throws
`ZipException`	if a zip file format error has occurred
`IOException`	if an I/O error has occurred
`SecurityException`	if any of the jar file entries are incorrectly signed.
`IllegalStateException`	may be thrown if the jar file has been closed

getJarEntry

Added in API level 1

JarEntry getJarEntry (String name)

Returns the JarEntry for the given entry name or null if not found.

Parameters
`name`	`String`: the jar file entry name

Returns
`JarEntry`	the `JarEntry` for the given entry name or `null` if not found.

Throws
`IllegalStateException`	may be thrown if the jar file has been closed

See also:

JarEntry

getManifest

Added in API level 1

Manifest getManifest ()

Returns the jar file manifest, or null if none.

Returns
`Manifest`	the jar file manifest, or `null` if none

Throws
`IllegalStateException`	may be thrown if the jar file has been closed
`IOException`

Interfaces

Classes

Exceptions

Most visited

Recently visited

Results for

JarFile

Summary

Constants

Inherited constants

Public constructors

Public methods

Inherited methods

Constants

MANIFEST_NAME

Public constructors

JarFile

JarFile

JarFile

JarFile

JarFile

Public methods

entries

getEntry

getInputStream

getJarEntry

getManifest