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JavaTM 2 Platform Std. Ed. v1.4.2 |
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java.lang.Objectjava.io.InputStream
java.io.FilterInputStream
java.util.zip.InflaterInputStream
java.util.zip.ZipInputStream
java.util.jar.JarInputStream
The JarInputStream class is used to read the contents of
a JAR file from any input stream. It extends the class
java.util.zip.ZipInputStream with support for reading
an optional Manifest entry. The Manifest
can be used to store meta-information about the JAR file and its entries.
Manifest,
ZipInputStream| Field Summary |
| Fields inherited from class java.util.zip.ZipInputStream |
CENATT, CENATX, CENCOM, CENCRC, CENDSK, CENEXT, CENFLG, CENHDR, CENHOW, CENLEN, CENNAM, CENOFF, CENSIG, CENSIZ, CENTIM, CENVEM, CENVER, ENDCOM, ENDHDR, ENDOFF, ENDSIG, ENDSIZ, ENDSUB, ENDTOT, EXTCRC, EXTHDR, EXTLEN, EXTSIG, EXTSIZ, LOCCRC, LOCEXT, LOCFLG, LOCHDR, LOCHOW, LOCLEN, LOCNAM, LOCSIG, LOCSIZ, LOCTIM, LOCVER |
| Fields inherited from class java.util.zip.InflaterInputStream |
buf, inf, len |
| Fields inherited from class java.io.FilterInputStream |
in |
| Constructor Summary | |
JarInputStream(InputStream in)
Creates a new JarInputStream and reads the optional
manifest. |
|
JarInputStream(InputStream in,
boolean verify)
Creates a new JarInputStream and reads the optional
manifest. |
|
| Method Summary | |
protected ZipEntry |
createZipEntry(String name)
Creates a new JarEntry (ZipEntry) for the
specified JAR file entry name. |
Manifest |
getManifest()
Returns the Manifest for this JAR file, or
null if none. |
ZipEntry |
getNextEntry()
Reads the next ZIP file entry and positions stream at the beginning of the entry data. |
JarEntry |
getNextJarEntry()
Reads the next JAR file entry and positions the stream at the beginning of the entry data. |
int |
read(byte[] b,
int off,
int len)
Reads from the current JAR file entry into an array of bytes. |
| Methods inherited from class java.util.zip.ZipInputStream |
available, close, closeEntry, skip |
| Methods inherited from class java.util.zip.InflaterInputStream |
fill, read |
| Methods inherited from class java.io.FilterInputStream |
mark, markSupported, read, reset |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
public JarInputStream(InputStream in)
throws IOException
JarInputStream and reads the optional
manifest. If a manifest is present, also attempts to verify
the signatures if the JarInputStream is signed.
in - the actual input stream
IOException - if an I/O error has occurred
public JarInputStream(InputStream in,
boolean verify)
throws IOException
JarInputStream and reads the optional
manifest. If a manifest is present and verify is true, also attempts
to verify the signatures if the JarInputStream is signed.
in - the actual input streamverify - whether or not to verify the JarInputStream if
it is signed.
IOException - if an I/O error has occurred| Method Detail |
public Manifest getManifest()
Manifest for this JAR file, or
null if none.
Manifest for this JAR file, or
null if none.
public ZipEntry getNextEntry()
throws IOException
getNextEntry in class ZipInputStreamZipException - if a ZIP file error has occurred
IOException - if an I/O error has occurred
public JarEntry getNextJarEntry()
throws IOException
ZipException - if a ZIP file error has occurred
IOException - if an I/O error has occurred
public int read(byte[] b,
int off,
int len)
throws IOException
read in class ZipInputStreamb - the buffer into which the data is readoff - the start offset of the datalen - the maximum number of bytes to read
ZipException - if a ZIP file error has occurred
IOException - if an I/O error has occurredprotected ZipEntry createZipEntry(String name)
JarEntry (ZipEntry) for the
specified JAR file entry name.
createZipEntry in class ZipInputStreamname - the name of the JAR/ZIP file entry
JarEntry object just created
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JavaTM 2 Platform Std. Ed. v1.4.2 |
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Copyright 2003 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.