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java.lang.Objectjava.io.InputStream
java.io.FilterInputStream
java.util.zip.InflaterInputStream
java.util.zip.ZipInputStream
java.util.jar.JarInputStream
public class 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 | |
---|---|
static int |
CENATT
|
static int |
CENATX
|
static int |
CENCOM
|
static int |
CENCRC
|
static int |
CENDSK
|
static int |
CENEXT
|
static int |
CENFLG
|
static int |
CENHDR
|
static int |
CENHOW
|
static int |
CENLEN
|
static int |
CENNAM
|
static int |
CENOFF
|
static long |
CENSIG
|
static int |
CENSIZ
|
static int |
CENTIM
|
static int |
CENVEM
|
static int |
CENVER
|
static int |
ENDCOM
|
static int |
ENDHDR
|
static int |
ENDOFF
|
static long |
ENDSIG
|
static int |
ENDSIZ
|
static int |
ENDSUB
|
static int |
ENDTOT
|
static int |
EXTCRC
|
static int |
EXTHDR
|
static int |
EXTLEN
|
static long |
EXTSIG
|
static int |
EXTSIZ
|
static int |
LOCCRC
|
static int |
LOCEXT
|
static int |
LOCFLG
|
static int |
LOCHDR
|
static int |
LOCHOW
|
static int |
LOCLEN
|
static int |
LOCNAM
|
static long |
LOCSIG
|
static int |
LOCSIZ
|
static int |
LOCTIM
|
static int |
LOCVER
|
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 | |
---|---|
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 |
---|
read |
Methods inherited from class java.io.FilterInputStream |
---|
mark, markSupported, read, reset |
Methods inherited from class java.lang.Object |
---|
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
public static final long LOCSIG
public static final long EXTSIG
public static final long CENSIG
public static final long ENDSIG
public static final int LOCHDR
public static final int EXTHDR
public static final int CENHDR
public static final int ENDHDR
public static final int LOCVER
public static final int LOCFLG
public static final int LOCHOW
public static final int LOCTIM
public static final int LOCCRC
public static final int LOCSIZ
public static final int LOCLEN
public static final int LOCNAM
public static final int LOCEXT
public static final int EXTCRC
public static final int EXTSIZ
public static final int EXTLEN
public static final int CENVEM
public static final int CENVER
public static final int CENFLG
public static final int CENHOW
public static final int CENTIM
public static final int CENCRC
public static final int CENSIZ
public static final int CENLEN
public static final int CENNAM
public static final int CENEXT
public static final int CENCOM
public static final int CENDSK
public static final int CENATT
public static final int CENATX
public static final int CENOFF
public static final int ENDSUB
public static final int ENDTOT
public static final int ENDSIZ
public static final int ENDOFF
public static final int ENDCOM
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 occurredpublic 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 occurredMethod 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 ZipInputStream
ZipException
- if a ZIP file error has occurred
IOException
- if an I/O error has occurredpublic JarEntry getNextJarEntry() throws IOException
ZipException
- if a ZIP file error has occurred
IOException
- if an I/O error has occurredpublic int read(byte[] b, int off, int len) throws IOException
read
in class ZipInputStream
b
- 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 occurredFilterInputStream.in
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