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java.util.jar
Class JarInputStream

java.lang.Object sample code for java.lang.Object definition code for java.lang.Object 
  extended by java.io.InputStream sample code for java.io.InputStream definition code for java.io.InputStream 
      extended by java.io.FilterInputStream sample code for java.io.FilterInputStream definition code for java.io.FilterInputStream 
          extended by java.util.zip.InflaterInputStream sample code for java.util.zip.InflaterInputStream definition code for java.util.zip.InflaterInputStream 
              extended by java.util.zip.ZipInputStream sample code for java.util.zip.ZipInputStream definition code for java.util.zip.ZipInputStream 
                  extended by java.util.jar.JarInputStream
All Implemented Interfaces:
Closeable sample code for java.io.Closeable definition code for java.io.Closeable 
public class JarInputStream
extends ZipInputStream sample code for java.util.zip.ZipInputStream definition code for java.util.zip.ZipInputStream

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.

Since:
1.2
See Also:
Manifest sample code for java.util.jar.Manifest definition code for java.util.jar.Manifest , ZipInputStream sample code for java.util.zip.ZipInputStream definition code for java.util.zip.ZipInputStream

Field Summary
static int CENATT sample code for java.util.jar.JarInputStream.CENATT definition code for java.util.jar.JarInputStream.CENATT
           
static int CENATX sample code for java.util.jar.JarInputStream.CENATX definition code for java.util.jar.JarInputStream.CENATX
           
static int CENCOM sample code for java.util.jar.JarInputStream.CENCOM definition code for java.util.jar.JarInputStream.CENCOM
           
static int CENCRC sample code for java.util.jar.JarInputStream.CENCRC definition code for java.util.jar.JarInputStream.CENCRC
           
static int CENDSK sample code for java.util.jar.JarInputStream.CENDSK definition code for java.util.jar.JarInputStream.CENDSK
           
static int CENEXT sample code for java.util.jar.JarInputStream.CENEXT definition code for java.util.jar.JarInputStream.CENEXT
           
static int CENFLG sample code for java.util.jar.JarInputStream.CENFLG definition code for java.util.jar.JarInputStream.CENFLG
           
static int CENHDR sample code for java.util.jar.JarInputStream.CENHDR definition code for java.util.jar.JarInputStream.CENHDR
           
static int CENHOW sample code for java.util.jar.JarInputStream.CENHOW definition code for java.util.jar.JarInputStream.CENHOW
           
static int CENLEN sample code for java.util.jar.JarInputStream.CENLEN definition code for java.util.jar.JarInputStream.CENLEN
           
static int CENNAM sample code for java.util.jar.JarInputStream.CENNAM definition code for java.util.jar.JarInputStream.CENNAM
           
static int CENOFF sample code for java.util.jar.JarInputStream.CENOFF definition code for java.util.jar.JarInputStream.CENOFF
           
static long CENSIG sample code for java.util.jar.JarInputStream.CENSIG definition code for java.util.jar.JarInputStream.CENSIG
           
static int CENSIZ sample code for java.util.jar.JarInputStream.CENSIZ definition code for java.util.jar.JarInputStream.CENSIZ
           
static int CENTIM sample code for java.util.jar.JarInputStream.CENTIM definition code for java.util.jar.JarInputStream.CENTIM
           
static int CENVEM sample code for java.util.jar.JarInputStream.CENVEM definition code for java.util.jar.JarInputStream.CENVEM
           
static int CENVER sample code for java.util.jar.JarInputStream.CENVER definition code for java.util.jar.JarInputStream.CENVER
           
static int ENDCOM sample code for java.util.jar.JarInputStream.ENDCOM definition code for java.util.jar.JarInputStream.ENDCOM
           
static int ENDHDR sample code for java.util.jar.JarInputStream.ENDHDR definition code for java.util.jar.JarInputStream.ENDHDR
           
static int ENDOFF sample code for java.util.jar.JarInputStream.ENDOFF definition code for java.util.jar.JarInputStream.ENDOFF
           
static long ENDSIG sample code for java.util.jar.JarInputStream.ENDSIG definition code for java.util.jar.JarInputStream.ENDSIG
           
static int ENDSIZ sample code for java.util.jar.JarInputStream.ENDSIZ definition code for java.util.jar.JarInputStream.ENDSIZ
           
static int ENDSUB sample code for java.util.jar.JarInputStream.ENDSUB definition code for java.util.jar.JarInputStream.ENDSUB
           
static int ENDTOT sample code for java.util.jar.JarInputStream.ENDTOT definition code for java.util.jar.JarInputStream.ENDTOT
           
static int EXTCRC sample code for java.util.jar.JarInputStream.EXTCRC definition code for java.util.jar.JarInputStream.EXTCRC
           
static int EXTHDR sample code for java.util.jar.JarInputStream.EXTHDR definition code for java.util.jar.JarInputStream.EXTHDR
           
static int EXTLEN sample code for java.util.jar.JarInputStream.EXTLEN definition code for java.util.jar.JarInputStream.EXTLEN
           
static long EXTSIG sample code for java.util.jar.JarInputStream.EXTSIG definition code for java.util.jar.JarInputStream.EXTSIG
           
static int EXTSIZ sample code for java.util.jar.JarInputStream.EXTSIZ definition code for java.util.jar.JarInputStream.EXTSIZ
           
static int LOCCRC sample code for java.util.jar.JarInputStream.LOCCRC definition code for java.util.jar.JarInputStream.LOCCRC
           
static int LOCEXT sample code for java.util.jar.JarInputStream.LOCEXT definition code for java.util.jar.JarInputStream.LOCEXT
           
static int LOCFLG sample code for java.util.jar.JarInputStream.LOCFLG definition code for java.util.jar.JarInputStream.LOCFLG
           
static int LOCHDR sample code for java.util.jar.JarInputStream.LOCHDR definition code for java.util.jar.JarInputStream.LOCHDR
           
static int LOCHOW sample code for java.util.jar.JarInputStream.LOCHOW definition code for java.util.jar.JarInputStream.LOCHOW
           
static int LOCLEN sample code for java.util.jar.JarInputStream.LOCLEN definition code for java.util.jar.JarInputStream.LOCLEN
           
static int LOCNAM sample code for java.util.jar.JarInputStream.LOCNAM definition code for java.util.jar.JarInputStream.LOCNAM
           
static long LOCSIG sample code for java.util.jar.JarInputStream.LOCSIG definition code for java.util.jar.JarInputStream.LOCSIG
           
static int LOCSIZ sample code for java.util.jar.JarInputStream.LOCSIZ definition code for java.util.jar.JarInputStream.LOCSIZ
           
static int LOCTIM sample code for java.util.jar.JarInputStream.LOCTIM definition code for java.util.jar.JarInputStream.LOCTIM
           
static int LOCVER sample code for java.util.jar.JarInputStream.LOCVER definition code for java.util.jar.JarInputStream.LOCVER
           
 
Fields inherited from class java.util.zip.InflaterInputStream sample code for java.util.zip.InflaterInputStream definition code for java.util.zip.InflaterInputStream
buf sample code for java.util.zip.InflaterInputStream.buf definition code for java.util.zip.InflaterInputStream.buf , inf sample code for java.util.zip.InflaterInputStream.inf definition code for java.util.zip.InflaterInputStream.inf , len sample code for java.util.zip.InflaterInputStream.len definition code for java.util.zip.InflaterInputStream.len
 
Fields inherited from class java.io.FilterInputStream sample code for java.io.FilterInputStream definition code for java.io.FilterInputStream
in sample code for java.io.FilterInputStream.in definition code for java.io.FilterInputStream.in
 
Constructor Summary
JarInputStream sample code for java.util.jar.JarInputStream.JarInputStream(java.io.InputStream) definition code for java.util.jar.JarInputStream.JarInputStream(java.io.InputStream) (InputStream sample code for java.io.InputStream definition code for java.io.InputStream  in)
          Creates a new JarInputStream and reads the optional manifest.
JarInputStream sample code for java.util.jar.JarInputStream.JarInputStream(java.io.InputStream, boolean) definition code for java.util.jar.JarInputStream.JarInputStream(java.io.InputStream, boolean) (InputStream sample code for java.io.InputStream definition code for java.io.InputStream  in, boolean verify)
          Creates a new JarInputStream and reads the optional manifest.
 
Method Summary
protected  ZipEntry sample code for java.util.zip.ZipEntry definition code for java.util.zip.ZipEntry createZipEntry sample code for java.util.jar.JarInputStream.createZipEntry(java.lang.String) definition code for java.util.jar.JarInputStream.createZipEntry(java.lang.String) (String sample code for java.lang.String definition code for java.lang.String  name)
          Creates a new JarEntry (ZipEntry) for the specified JAR file entry name.
 Manifest sample code for java.util.jar.Manifest definition code for java.util.jar.Manifest getManifest sample code for java.util.jar.JarInputStream.getManifest() definition code for java.util.jar.JarInputStream.getManifest() ()
          Returns the Manifest for this JAR file, or null if none.
 ZipEntry sample code for java.util.zip.ZipEntry definition code for java.util.zip.ZipEntry getNextEntry sample code for java.util.jar.JarInputStream.getNextEntry() definition code for java.util.jar.JarInputStream.getNextEntry() ()
          Reads the next ZIP file entry and positions the stream at the beginning of the entry data.
 JarEntry sample code for java.util.jar.JarEntry definition code for java.util.jar.JarEntry getNextJarEntry sample code for java.util.jar.JarInputStream.getNextJarEntry() definition code for java.util.jar.JarInputStream.getNextJarEntry() ()
          Reads the next JAR file entry and positions the stream at the beginning of the entry data.
 int read sample code for java.util.jar.JarInputStream.read(byte[], int, int) definition code for java.util.jar.JarInputStream.read(byte[], int, int) (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 sample code for java.util.zip.ZipInputStream definition code for java.util.zip.ZipInputStream
available sample code for java.util.zip.ZipInputStream.available() definition code for java.util.zip.ZipInputStream.available() , close sample code for java.util.zip.ZipInputStream.close() definition code for java.util.zip.ZipInputStream.close() , closeEntry sample code for java.util.zip.ZipInputStream.closeEntry() definition code for java.util.zip.ZipInputStream.closeEntry() , skip sample code for java.util.zip.ZipInputStream.skip(long) definition code for java.util.zip.ZipInputStream.skip(long)
 
Methods inherited from class java.util.zip.InflaterInputStream sample code for java.util.zip.InflaterInputStream definition code for java.util.zip.InflaterInputStream
fill sample code for java.util.zip.InflaterInputStream.fill() definition code for java.util.zip.InflaterInputStream.fill() , mark sample code for java.util.zip.InflaterInputStream.mark(int) definition code for java.util.zip.InflaterInputStream.mark(int) , markSupported sample code for java.util.zip.InflaterInputStream.markSupported() definition code for java.util.zip.InflaterInputStream.markSupported() , read sample code for java.util.zip.InflaterInputStream.read() definition code for java.util.zip.InflaterInputStream.read() , reset sample code for java.util.zip.InflaterInputStream.reset() definition code for java.util.zip.InflaterInputStream.reset()
 
Methods inherited from class java.io.FilterInputStream sample code for java.io.FilterInputStream definition code for java.io.FilterInputStream
read sample code for java.io.FilterInputStream.read(byte[]) definition code for java.io.FilterInputStream.read(byte[])
 
Methods inherited from class java.lang.Object sample code for java.lang.Object definition code for java.lang.Object
clone sample code for java.lang.Object.clone() definition code for java.lang.Object.clone() , equals sample code for java.lang.Object.equals(java.lang.Object) definition code for java.lang.Object.equals(java.lang.Object) , finalize sample code for java.lang.Object.finalize() definition code for java.lang.Object.finalize() , getClass sample code for java.lang.Object.getClass() definition code for java.lang.Object.getClass() , hashCode sample code for java.lang.Object.hashCode() definition code for java.lang.Object.hashCode() , notify sample code for java.lang.Object.notify() definition code for java.lang.Object.notify() , notifyAll sample code for java.lang.Object.notifyAll() definition code for java.lang.Object.notifyAll() , toString sample code for java.lang.Object.toString() definition code for java.lang.Object.toString() , wait sample code for java.lang.Object.wait() definition code for java.lang.Object.wait() , wait sample code for java.lang.Object.wait(long) definition code for java.lang.Object.wait(long) , wait sample code for java.lang.Object.wait(long, int) definition code for java.lang.Object.wait(long, int)
 

Field Detail

LOCSIG sample code for java.util.zip.ZipConstants.LOCSIG 

public static final long LOCSIG
See Also:
Constant Field Values

EXTSIG sample code for java.util.zip.ZipConstants.EXTSIG 

public static final long EXTSIG
See Also:
Constant Field Values

CENSIG sample code for java.util.zip.ZipConstants.CENSIG 

public static final long CENSIG
See Also:
Constant Field Values

ENDSIG sample code for java.util.zip.ZipConstants.ENDSIG 

public static final long ENDSIG
See Also:
Constant Field Values

LOCHDR sample code for java.util.zip.ZipConstants.LOCHDR 

public static final int LOCHDR
See Also:
Constant Field Values

EXTHDR sample code for java.util.zip.ZipConstants.EXTHDR 

public static final int EXTHDR
See Also:
Constant Field Values

CENHDR sample code for java.util.zip.ZipConstants.CENHDR 

public static final int CENHDR
See Also:
Constant Field Values

ENDHDR sample code for java.util.zip.ZipConstants.ENDHDR 

public static final int ENDHDR
See Also:
Constant Field Values

LOCVER sample code for java.util.zip.ZipConstants.LOCVER 

public static final int LOCVER
See Also:
Constant Field Values

LOCFLG sample code for java.util.zip.ZipConstants.LOCFLG 

public static final int LOCFLG
See Also:
Constant Field Values

LOCHOW sample code for java.util.zip.ZipConstants.LOCHOW 

public static final int LOCHOW
See Also:
Constant Field Values

LOCTIM sample code for java.util.zip.ZipConstants.LOCTIM 

public static final int LOCTIM
See Also:
Constant Field Values

LOCCRC sample code for java.util.zip.ZipConstants.LOCCRC 

public static final int LOCCRC
See Also:
Constant Field Values

LOCSIZ sample code for java.util.zip.ZipConstants.LOCSIZ 

public static final int LOCSIZ
See Also:
Constant Field Values

LOCLEN sample code for java.util.zip.ZipConstants.LOCLEN 

public static final int LOCLEN
See Also:
Constant Field Values

LOCNAM sample code for java.util.zip.ZipConstants.LOCNAM 

public static final int LOCNAM
See Also:
Constant Field Values

LOCEXT sample code for java.util.zip.ZipConstants.LOCEXT 

public static final int LOCEXT
See Also:
Constant Field Values

EXTCRC sample code for java.util.zip.ZipConstants.EXTCRC 

public static final int EXTCRC
See Also:
Constant Field Values

EXTSIZ sample code for java.util.zip.ZipConstants.EXTSIZ 

public static final int EXTSIZ
See Also:
Constant Field Values

EXTLEN sample code for java.util.zip.ZipConstants.EXTLEN 

public static final int EXTLEN
See Also:
Constant Field Values

CENVEM sample code for java.util.zip.ZipConstants.CENVEM 

public static final int CENVEM
See Also:
Constant Field Values

CENVER sample code for java.util.zip.ZipConstants.CENVER 

public static final int CENVER
See Also:
Constant Field Values

CENFLG sample code for java.util.zip.ZipConstants.CENFLG 

public static final int CENFLG
See Also:
Constant Field Values

CENHOW sample code for java.util.zip.ZipConstants.CENHOW 

public static final int CENHOW
See Also:
Constant Field Values

CENTIM sample code for java.util.zip.ZipConstants.CENTIM 

public static final int CENTIM
See Also:
Constant Field Values

CENCRC sample code for java.util.zip.ZipConstants.CENCRC 

public static final int CENCRC
See Also:
Constant Field Values

CENSIZ sample code for java.util.zip.ZipConstants.CENSIZ 

public static final int CENSIZ
See Also:
Constant Field Values

CENLEN sample code for java.util.zip.ZipConstants.CENLEN 

public static final int CENLEN
See Also:
Constant Field Values

CENNAM sample code for java.util.zip.ZipConstants.CENNAM 

public static final int CENNAM
See Also:
Constant Field Values

CENEXT sample code for java.util.zip.ZipConstants.CENEXT 

public static final int CENEXT
See Also:
Constant Field Values

CENCOM sample code for java.util.zip.ZipConstants.CENCOM 

public static final int CENCOM
See Also:
Constant Field Values

CENDSK sample code for java.util.zip.ZipConstants.CENDSK 

public static final int CENDSK
See Also:
Constant Field Values

CENATT sample code for java.util.zip.ZipConstants.CENATT 

public static final int CENATT
See Also:
Constant Field Values

CENATX sample code for java.util.zip.ZipConstants.CENATX 

public static final int CENATX
See Also:
Constant Field Values

CENOFF sample code for java.util.zip.ZipConstants.CENOFF 

public static final int CENOFF
See Also:
Constant Field Values

ENDSUB sample code for java.util.zip.ZipConstants.ENDSUB 

public static final int ENDSUB
See Also:
Constant Field Values

ENDTOT sample code for java.util.zip.ZipConstants.ENDTOT 

public static final int ENDTOT
See Also:
Constant Field Values

ENDSIZ sample code for java.util.zip.ZipConstants.ENDSIZ 

public static final int ENDSIZ
See Also:
Constant Field Values

ENDOFF sample code for java.util.zip.ZipConstants.ENDOFF 

public static final int ENDOFF
See Also:
Constant Field Values

ENDCOM sample code for java.util.zip.ZipConstants.ENDCOM 

public static final int ENDCOM
See Also:
Constant Field Values
Constructor Detail

JarInputStream sample code for java.util.jar.JarInputStream(java.io.InputStream) definition code for java.util.jar.JarInputStream(java.io.InputStream) 

public JarInputStream(InputStream sample code for java.io.InputStream definition code for java.io.InputStream  in)
               throws IOException sample code for java.io.IOException definition code for java.io.IOException
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
Throws:
IOException sample code for java.io.IOException definition code for java.io.IOException - if an I/O error has occurred

JarInputStream sample code for java.util.jar.JarInputStream(java.io.InputStream, boolean) definition code for java.util.jar.JarInputStream(java.io.InputStream, boolean) 

public JarInputStream(InputStream sample code for java.io.InputStream definition code for java.io.InputStream  in,
                      boolean verify)
               throws IOException sample code for java.io.IOException definition code for java.io.IOException
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
verify - whether or not to verify the JarInputStream if it is signed.
Throws:
IOException sample code for java.io.IOException definition code for java.io.IOException - if an I/O error has occurred
Method Detail

getManifest sample code for java.util.jar.JarInputStream.getManifest() definition code for java.util.jar.JarInputStream.getManifest() 

public Manifest sample code for java.util.jar.Manifest definition code for java.util.jar.Manifest  getManifest()
Returns the Manifest for this JAR file, or null if none.

Returns:
the Manifest for this JAR file, or null if none.

getNextEntry sample code for java.util.jar.JarInputStream.getNextEntry() definition code for java.util.jar.JarInputStream.getNextEntry() 

public ZipEntry sample code for java.util.zip.ZipEntry definition code for java.util.zip.ZipEntry  getNextEntry()
                      throws IOException sample code for java.io.IOException definition code for java.io.IOException
Reads the next ZIP file entry and positions the stream at the beginning of the entry data. If verification has been enabled, any invalid signature detected while positioning the stream for the next entry will result in an exception.

Overrides:
getNextEntry sample code for java.util.zip.ZipInputStream.getNextEntry() definition code for java.util.zip.ZipInputStream.getNextEntry() in class ZipInputStream sample code for java.util.zip.ZipInputStream definition code for java.util.zip.ZipInputStream
Returns:
the next ZIP file entry, or null if there are no more entries
Throws:
ZipException sample code for java.util.zip.ZipException definition code for java.util.zip.ZipException - if a ZIP file error has occurred
IOException sample code for java.io.IOException definition code for java.io.IOException - if an I/O error has occurred
SecurityException sample code for java.lang.SecurityException definition code for java.lang.SecurityException - if any of the jar file entries are incorrectly signed.

getNextJarEntry sample code for java.util.jar.JarInputStream.getNextJarEntry() definition code for java.util.jar.JarInputStream.getNextJarEntry() 

public JarEntry sample code for java.util.jar.JarEntry definition code for java.util.jar.JarEntry  getNextJarEntry()
                         throws IOException sample code for java.io.IOException definition code for java.io.IOException
Reads the next JAR file entry and positions the stream at the beginning of the entry data. If verification has been enabled, any invalid signature detected while positioning the stream for the next entry will result in an exception.

Returns:
the next JAR file entry, or null if there are no more entries
Throws:
ZipException sample code for java.util.zip.ZipException definition code for java.util.zip.ZipException - if a ZIP file error has occurred
IOException sample code for java.io.IOException definition code for java.io.IOException - if an I/O error has occurred
SecurityException sample code for java.lang.SecurityException definition code for java.lang.SecurityException - if any of the jar file entries are incorrectly signed.

read sample code for java.util.jar.JarInputStream.read(byte[], int, int) definition code for java.util.jar.JarInputStream.read(byte[], int, int) 

public int read(byte[] b,
                int off,
                int len)
         throws IOException sample code for java.io.IOException definition code for java.io.IOException
Reads from the current JAR file entry into an array of bytes. Blocks until some input is available. If verification has been enabled, any invalid signature on the current entry will be reported at some point before the end of the entry is reached.

Overrides:
read sample code for java.util.zip.ZipInputStream.read(byte[], int, int) definition code for java.util.zip.ZipInputStream.read(byte[], int, int) in class ZipInputStream sample code for java.util.zip.ZipInputStream definition code for java.util.zip.ZipInputStream
Parameters:
b - the buffer into which the data is read
off - the start offset of the data
len - the maximum number of bytes to read
Returns:
the actual number of bytes read, or -1 if the end of the entry is reached
Throws:
ZipException sample code for java.util.zip.ZipException definition code for java.util.zip.ZipException - if a ZIP file error has occurred
IOException sample code for java.io.IOException definition code for java.io.IOException - if an I/O error has occurred
SecurityException sample code for java.lang.SecurityException definition code for java.lang.SecurityException - if any of the jar file entries are incorrectly signed.
See Also:
FilterInputStream.in sample code for java.io.FilterInputStream.in definition code for java.io.FilterInputStream.in

createZipEntry sample code for java.util.jar.JarInputStream.createZipEntry(java.lang.String) definition code for java.util.jar.JarInputStream.createZipEntry(java.lang.String) 

protected ZipEntry sample code for java.util.zip.ZipEntry definition code for java.util.zip.ZipEntry  createZipEntry(String sample code for java.lang.String definition code for java.lang.String  name)
Creates a new JarEntry (ZipEntry) for the specified JAR file entry name. The manifest attributes of the specified JAR file entry name will be copied to the new JarEntry.

Overrides:
createZipEntry sample code for java.util.zip.ZipInputStream.createZipEntry(java.lang.String) definition code for java.util.zip.ZipInputStream.createZipEntry(java.lang.String) in class ZipInputStream sample code for java.util.zip.ZipInputStream definition code for java.util.zip.ZipInputStream
Parameters:
name - the name of the JAR/ZIP file entry
Returns:
the JarEntry object just created
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