ZipFile (Apache Commons Compress 1.8 API)

java.lang.Object
- org.apache.commons.compress.archivers.zip.ZipFile

All Implemented Interfaces:

Closeable
```
public class ZipFile
extends Object
implements Closeable
```
Replacement for java.util.ZipFile.
This class adds support for file name encodings other than UTF-8 (which is required to work on ZIP files created by native zip tools and is able to skip a preamble like the one found in self extracting archives. Furthermore it returns instances of org.apache.commons.compress.archivers.zip.ZipArchiveEntry instead of java.util.zip.ZipEntry.

It doesn't extend java.util.zip.ZipFile as it would have to reimplement all methods anyway. Like java.util.ZipFile, it uses RandomAccessFile under the covers and supports compressed and uncompressed entries. As of Apache Commons Compress 1.3 it also transparently supports Zip64 extensions and thus individual entries and archives larger than 4 GB or with more than 65536 entries.

The method signatures mimic the ones of java.util.zip.ZipFile, with a couple of exceptions:
- There is no getName method.
- entries has been renamed to getEntries.
- getEntries and getEntry return org.apache.commons.compress.archivers.zip.ZipArchiveEntry instances.
- close is allowed to throw IOException.

Constructor Summary

Constructors
Constructor and Description
`ZipFile(File f)` Opens the given file for reading, assuming "UTF8" for file names.
`ZipFile(File f, String encoding)` Opens the given file for reading, assuming the specified encoding for file names and scanning for unicode extra fields.
`ZipFile(File f, String encoding, boolean useUnicodeExtraFields)` Opens the given file for reading, assuming the specified encoding for file names.
`ZipFile(String name)` Opens the given file for reading, assuming "UTF8".
`ZipFile(String name, String encoding)` Opens the given file for reading, assuming the specified encoding for file names, scanning unicode extra fields.

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`canReadEntryData(ZipArchiveEntry ze)` Whether this class is able to read the given entry.
`void`	`close()` Closes the archive.
`static void`	`closeQuietly(ZipFile zipfile)` close a zipfile quietly; throw no io fault, do nothing on a null parameter
`protected void`	`finalize()` Ensures that the close method of this zipfile is called when there are no more references to it.
`String`	`getEncoding()` The encoding to use for filenames and the file comment.
`Enumeration<ZipArchiveEntry>`	`getEntries()` Returns all entries.
`Iterable<ZipArchiveEntry>`	`getEntries(String name)` Returns all named entries in the same order they appear within the archive's central directory.
`Enumeration<ZipArchiveEntry>`	`getEntriesInPhysicalOrder()` Returns all entries in physical order.
`Iterable<ZipArchiveEntry>`	`getEntriesInPhysicalOrder(String name)` Returns all named entries in the same order their contents appear within the archive.
`ZipArchiveEntry`	`getEntry(String name)` Returns a named entry - or `null` if no entry by that name exists.
`InputStream`	`getInputStream(ZipArchiveEntry ze)` Returns an InputStream for reading the contents of the given entry.
`String`	`getUnixSymlink(ZipArchiveEntry entry)` Convenience method to return the entry's content as a String if isUnixSymlink() returns true for it, otherwise returns null.

Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ZipFile
```
public ZipFile(File f)
        throws IOException
```
    Opens the given file for reading, assuming "UTF8" for file names.
    
    Parameters:
    f - the archive.
    
    Throws:
    
    IOException - if an error occurs while reading the file.
  - ZipFile
```
public ZipFile(String name)
        throws IOException
```
    Opens the given file for reading, assuming "UTF8".
    
    Parameters:
    name - name of the archive.
    
    Throws:
    
    IOException - if an error occurs while reading the file.
  - ZipFile
```
public ZipFile(String name,
       String encoding)
        throws IOException
```
    Opens the given file for reading, assuming the specified encoding for file names, scanning unicode extra fields.
    
    Parameters:
    name - name of the archive.
    encoding - the encoding to use for file names, use null for the platform's default encoding
    
    Throws:
    
    IOException - if an error occurs while reading the file.
  - ZipFile
```
public ZipFile(File f,
       String encoding)
        throws IOException
```
    Opens the given file for reading, assuming the specified encoding for file names and scanning for unicode extra fields.
    
    Parameters:
    f - the archive.
    encoding - the encoding to use for file names, use null for the platform's default encoding
    
    Throws:
    
    IOException - if an error occurs while reading the file.
  - ZipFile
```
public ZipFile(File f,
       String encoding,
       boolean useUnicodeExtraFields)
        throws IOException
```
    Opens the given file for reading, assuming the specified encoding for file names.
    
    Parameters:
    f - the archive.
    encoding - the encoding to use for file names, use null for the platform's default encoding
    useUnicodeExtraFields - whether to use InfoZIP Unicode Extra Fields (if present) to set the file names.
    
    Throws:
    
    IOException - if an error occurs while reading the file.
- Method Detail
  - getEncoding
```
public String getEncoding()
```
    The encoding to use for filenames and the file comment.
    
    Returns:
    null if using the platform's default character encoding.
  - close
```
public void close()
           throws IOException
```
    Closes the archive.
    
    Specified by:
    
    close in interface Closeable
    
    Throws:
    
    IOException - if an error occurs closing the archive.
  - closeQuietly
```
public static void closeQuietly(ZipFile zipfile)
```
    close a zipfile quietly; throw no io fault, do nothing on a null parameter
    
    Parameters:
    zipfile - file to close, can be null
  - getEntries
```
public Enumeration<ZipArchiveEntry> getEntries()
```
    Returns all entries.
    Entries will be returned in the same order they appear within the archive's central directory.
    
    Returns:
    all entries as ZipArchiveEntry instances
  - getEntriesInPhysicalOrder
```
public Enumeration<ZipArchiveEntry> getEntriesInPhysicalOrder()
```
    Returns all entries in physical order.
    Entries will be returned in the same order their contents appear within the archive.
    
    Returns:
    all entries as ZipArchiveEntry instances
    Since:
    
    1.1
  - getEntry
```
public ZipArchiveEntry getEntry(String name)
```
    Returns a named entry - or null if no entry by that name exists.
    If multiple entries with the same name exist the first entry in the archive's central directory by that name is returned.
    
    Parameters:
    name - name of the entry.
    
    Returns:
    the ZipArchiveEntry corresponding to the given name - or null if not present.
  - getEntries
```
public Iterable<ZipArchiveEntry> getEntries(String name)
```
    Returns all named entries in the same order they appear within the archive's central directory.
    
    Parameters:
    name - name of the entry.
    
    Returns:
    the Iterable<ZipArchiveEntry> corresponding to the given name
    Since:
    
    1.6
  - getEntriesInPhysicalOrder
```
public Iterable<ZipArchiveEntry> getEntriesInPhysicalOrder(String name)
```
    Returns all named entries in the same order their contents appear within the archive.
    
    Parameters:
    name - name of the entry.
    
    Returns:
    the Iterable<ZipArchiveEntry> corresponding to the given name
    Since:
    
    1.6
  - canReadEntryData
```
public boolean canReadEntryData(ZipArchiveEntry ze)
```
    Whether this class is able to read the given entry.
    May return false if it is set up to use encryption or a compression method that hasn't been implemented yet.
    
    Since:
    
    1.1
  - getInputStream
```
public InputStream getInputStream(ZipArchiveEntry ze)
                           throws IOException,
                                  ZipException
```
    Returns an InputStream for reading the contents of the given entry.
    
    Parameters:
    ze - the entry to get the stream for.
    
    Returns:
    a stream to read the entry from.
    
    Throws:
    
    IOException - if unable to create an input stream from the zipentry
    
    ZipException - if the zipentry uses an unsupported feature
  - getUnixSymlink
```
public String getUnixSymlink(ZipArchiveEntry entry)
                      throws IOException
```
    Convenience method to return the entry's content as a String if isUnixSymlink() returns true for it, otherwise returns null.
    
    This method assumes the symbolic link's file name uses the same encoding that as been specified for this ZipFile.
    
    Parameters:
    entry - ZipArchiveEntry object that represents the symbolic link
    
    Returns:
    entry's content as a String
    
    Throws:
    
    IOException - problem with content's input stream
    Since:
    
    1.5
  - finalize
```
protected void finalize()
                 throws Throwable
```
    Ensures that the close method of this zipfile is called when there are no more references to it.
    
    Overrides:
    
    finalize in class Object
    
    Throws:
    
    Throwable
    See Also:
    close()

Class ZipFile

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ZipFile

ZipFile

ZipFile

ZipFile

ZipFile

Method Detail

getEncoding

close

closeQuietly

getEntries

getEntriesInPhysicalOrder

getEntry

getEntries

getEntriesInPhysicalOrder

canReadEntryData

getInputStream

getUnixSymlink

finalize