| java.lang.Object
 java.io.InputStream
java.io.FilterInputStream
java.util.zip.InflaterInputStream
java.util.zip.ZipInputStream
java.util.jar.JarInputStream
| JarInputStream | | public class JarInputStream extends ZipInputStream (Code) | | 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.
author:
David Connelly
version:
1.25, 02/02/00
See Also: Manifest
See Also: java.util.zip.ZipInputStream
since:
1.2 |
| Method Summary | |
| protected ZipEntry | createZipEntry(String name)
Creates a new JarEntry (ZipEntry) for the
specified JAR file entry name. | | public Manifest | getManifest()
Returns the Manifest for this JAR file, or
null if none. | | public ZipEntry | getNextEntry()
Reads the next ZIP file entry and positions stream at the beginning
of the entry data. | | public JarEntry | getNextJarEntry()
Reads the next JAR file entry and positions the stream at the
beginning of the entry data. | | public int | read(byte[] b, int off, int len)
Reads from the current JAR file entry into an array of bytes. |
| JarInputStream | | public JarInputStream(InputStream in) throws IOException(Code) | | Creates a new JarInputStream and reads the optional
manifest. If a manifest is present, also attempts to verify
the signatures if the JarInputStream is signed.
Parameters:
in - the actual input stream
exception:
IOException - if an I/O error has occurred |
| JarInputStream | | public JarInputStream(InputStream in, boolean verify) throws IOException(Code) | | Creates a new 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.
Parameters:
in - the actual input stream
Parameters:
verify - whether or not to verify the JarInputStream ifit is signed.
exception:
IOException - if an I/O error has occurred |
| createZipEntry | | protected ZipEntry createZipEntry(String name)(Code) | | Creates a new JarEntry (ZipEntry) for the
specified JAR file entry name.
Parameters:
name - the name of the JAR/ZIP file entry the JarEntry object just created |
| getManifest | | public Manifest getManifest()(Code) | | Returns the Manifest for this JAR file, or
null if none.
the Manifest for this JAR file, ornull if none. |
| getNextEntry | | public ZipEntry getNextEntry() throws IOException(Code) | | Reads the next ZIP file entry and positions stream at the beginning
of the entry data.
exception:
ZipException - if a ZIP file error has occurred
exception:
IOException - if an I/O error has occurred |
| getNextJarEntry | | public JarEntry getNextJarEntry() throws IOException(Code) | | Reads the next JAR file entry and positions the stream at the
beginning of the entry data.
the next JAR file entry
exception:
ZipException - if a ZIP file error has occurred
exception:
IOException - if an I/O error has occurred |
| read | | public int read(byte[] b, int off, int len) throws IOException(Code) | | Reads from the current JAR file entry into an array of bytes.
Blocks until some input is available.
Parameters:
b - the buffer into which the data is read
Parameters:
off - the start offset of the data
Parameters:
len - the maximum number of bytes to read the actual number of bytes read, or -1 if the end of theentry is reached
exception:
ZipException - if a ZIP file error has occurred
exception:
IOException - if an I/O error has occurred |
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