JarFile Class
Definition
Important
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The JarFile class is used to read the contents of a jar file
from any file that can be opened with java.io.RandomAccessFile.
[Android.Runtime.Register("java/util/jar/JarFile", DoNotGenerateAcw=true)]
public class JarFile : Java.Util.Zip.ZipFile[<Android.Runtime.Register("java/util/jar/JarFile", DoNotGenerateAcw=true)>]
type JarFile = class
inherit ZipFile- Inheritance
- Attributes
Remarks
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.
If the verify flag is on when opening a signed jar file, the content of the file is verified against its signature embedded inside the file. Please note that the verification process does not include validating the signer's certificate. A caller should inspect the return value of JarEntry#getCodeSigners() to further determine if the signature can be trusted.
Added in 1.2.
Java documentation for java.util.jar.JarFile.
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.
Constructors
| Name | Description |
|---|---|
| JarFile(File, Boolean, Int32) |
Creates a new |
| JarFile(File, Boolean) |
Creates a new |
| JarFile(File) |
Creates a new |
| JarFile(IntPtr, JniHandleOwnership) |
A constructor used when creating managed representations of JNI objects; called by the runtime. |
| JarFile(String, Boolean) |
Creates a new |
| JarFile(String) |
Creates a new |
Fields
| Name | Description |
|---|---|
| Cenatt |
Central directory (CEN) header internal file attributes field offset. |
| Cenatx |
Central directory (CEN) header external file attributes field offset. |
| Cencom |
Central directory (CEN) header comment length field offset. |
| Cencrc |
Central directory (CEN) header uncompressed file crc-32 value field offset. |
| Cendsk |
Central directory (CEN) header disk number start field offset. |
| Cenext |
Central directory (CEN) header extra field length field offset. |
| Cenflg |
Central directory (CEN) header encrypt, decrypt flags field offset. |
| Cenhdr |
Central directory (CEN) header size in bytes (including signature). |
| Cenhow |
Central directory (CEN) header compression method field offset. |
| Cenlen |
Central directory (CEN) header uncompressed size field offset. |
| Cennam |
Central directory (CEN) header filename length field offset. |
| Cenoff |
Central directory (CEN) header LOC header offset field offset. |
| Censig |
Central directory (CEN) header signature. |
| Censiz |
Central directory (CEN) header compressed size field offset. |
| Centim |
Central directory (CEN) header modification time field offset. |
| Cenvem |
Central directory (CEN) header version made by field offset. |
| Cenver |
Central directory (CEN) header version needed to extract field offset. |
| Endcom |
End of central directory (END) header zip file comment length field offset. |
| Endhdr |
End of central directory (END) header size in bytes (including signature). |
| Endoff |
End of central directory (END) header offset for the first CEN header field offset. |
| Endsig |
End of central directory (END) header signature. |
| Endsiz |
End of central directory (END) header central directory size in bytes field offset. |
| Endsub |
End of central directory (END) header number of entries on this disk field offset. |
| Endtot |
End of central directory (END) header total number of entries field offset. |
| Extcrc |
Extra local (EXT) header uncompressed file crc-32 value field offset. |
| Exthdr |
Extra local (EXT) header size in bytes (including signature). |
| Extlen |
Extra local (EXT) header uncompressed size field offset. |
| Extsig |
Extra local (EXT) header signature. |
| Extsiz |
Extra local (EXT) header compressed size field offset. |
| Loccrc |
Local file (LOC) header uncompressed file crc-32 value field offset. |
| Locext |
Local file (LOC) header extra field length field offset. |
| Locflg |
Local file (LOC) header general purpose bit flag field offset. |
| Lochdr |
Local file (LOC) header size in bytes (including signature). |
| Lochow |
Local file (LOC) header compression method field offset. |
| Loclen |
Local file (LOC) header uncompressed size field offset. |
| Locnam |
Local file (LOC) header filename length field offset. |
| Locsig |
Local file (LOC) header signature. |
| Locsiz |
Local file (LOC) header compressed size field offset. |
| Loctim |
Local file (LOC) header modification time field offset. |
| Locver |
Local file (LOC) header version needed to extract field offset. |
| ManifestName |
The JAR manifest file name. |
| OpenDelete |
Mode flag to open a zip file and mark it for deletion. (Inherited from ZipFile) |
| OpenRead |
Mode flag to open a zip file for reading. (Inherited from ZipFile) |
Properties
| Name | Description |
|---|---|
| Class |
Returns the runtime class of this |
| Comment |
Returns the zip file comment, or null if none. (Inherited from ZipFile) |
| Handle |
The handle to the underlying Android instance. (Inherited from Object) |
| JniIdentityHashCode |
Gets the identity hash code assigned to this Java peer by the interop runtime. (Inherited from Object) |
| JniManagedPeerState | (Inherited from JavaObject) |
| JniPeerMembers |
Gets the JNI metadata used to access members of this Java binding. |
| Manifest |
Returns the jar file manifest, or |
| Name |
Returns the path name of the ZIP file. (Inherited from ZipFile) |
| PeerReference |
Gets the JNI object reference for this Java peer. (Inherited from Object) |
| ThresholdClass |
This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. |
| ThresholdType |
This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. |
Methods
| Name | Description |
|---|---|
| Clone() |
Creates and returns a copy of this object. (Inherited from Object) |
| Close() |
Closes the ZIP file. (Inherited from ZipFile) |
| Construct(JniObjectReference, JniObjectReferenceOptions) | (Inherited from JavaObject) |
| Dispose() |
Releases the resources held by this Java peer. (Inherited from Object) |
| Dispose(Boolean) |
Releases the resources held by this Java peer. (Inherited from Object) |
| DisposeUnlessReferenced() | (Inherited from JavaObject) |
| Entries() |
Returns an enumeration of the ZIP file entries. (Inherited from ZipFile) |
| Equals(Object) | (Inherited from JavaObject) |
| Equals(Object) |
Indicates whether some other object is "equal to" this one. (Inherited from Object) |
| GetEntry(String) |
Returns the zip file entry for the specified name, or null if not found. (Inherited from ZipFile) |
| GetHashCode() |
Returns a hash code value for the object. (Inherited from Object) |
| GetInputStream(ZipEntry) |
Returns an input stream for reading the contents of the specified zip file entry. (Inherited from ZipFile) |
| GetJarEntry(String) |
Returns the |
| JavaFinalize() |
Obsolete.
Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object) |
| Notify() |
Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object) |
| NotifyAll() |
Wakes up all threads that are waiting on this object's monitor. (Inherited from Object) |
| SetHandle(IntPtr, JniHandleOwnership) |
Sets the Handle property. (Inherited from Object) |
| SetPeerReference(JniObjectReference, JniObjectReferenceOptions) | (Inherited from JavaObject) |
| Size() |
Returns the number of entries in the ZIP file. (Inherited from ZipFile) |
| ToArray<T>() |
Creates a managed array from this Java array wrapper. (Inherited from Object) |
| ToString() |
Returns a string representation of the object. (Inherited from Object) |
| UnregisterFromRuntime() |
Unregisters this Java peer from the interop runtime. (Inherited from Object) |
| Wait() |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>. (Inherited from Object) |
| Wait(Int64, Int32) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
| Wait(Int64) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
Explicit Interface Implementations
| Name | Description |
|---|---|
| IJavaPeerable.Disposed() | (Inherited from JavaObject) |
| IJavaPeerable.Finalized() | (Inherited from JavaObject) |
| IJavaPeerable.JniObjectReferenceControlBlock | (Inherited from JavaObject) |
| IJavaPeerable.SetJniIdentityHashCode(Int32) | (Inherited from JavaObject) |
| IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates) | (Inherited from JavaObject) |
| IJavaPeerable.SetPeerReference(JniObjectReference) | (Inherited from JavaObject) |
| IJavaPeerable.UnregisterFromRuntime() |
Removes this instance from the runtime's Java object lookup. (Inherited from ZipFile) |
Extension Methods
| Name | Description |
|---|---|
| GetJniTypeName(IJavaPeerable) |
Gets the JNI name of the type of the instance |
| JavaAs<TResult>(IJavaPeerable) |
Try to coerce |
| JavaCast<TResult>(IJavaObject) |
Performs an Android runtime-checked type conversion. |
| JavaCast<TResult>(IJavaObject) | |
| TryJavaCast<TResult>(IJavaPeerable, TResult) |
Try to coerce |