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

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable
```
public class ZipFile
extends java.lang.Object
implements java.io.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 SeekableByteChannel 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.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`private class`	`ZipFile.BoundedFileChannelInputStream`	Lock-free implementation of BoundedInputStream.
`private static class`	`ZipFile.Entry`	Extends ZipArchiveEntry to store the offset within the archive.
`private static class`	`ZipFile.NameAndComment`
`private static class`	`ZipFile.StoredStatisticsStream`

Field Summary

Fields
Modifier and Type	Field	Description
`private java.nio.channels.SeekableByteChannel`	`archive`	The actual data source.
`private java.lang.String`	`archiveName`	File name of actual source.
`(package private) static int`	`BYTE_SHIFT`
`private long`	`centralDirectoryStartDiskNumber`
`private long`	`centralDirectoryStartOffset`
`private long`	`centralDirectoryStartRelativeOffset`
`private static int`	`CFD_DISK_OFFSET`	Offset of the field that holds the disk number of the first central directory entry inside the "End of central directory record" relative to the start of the "End of central directory record".
`private static int`	`CFD_LOCATOR_OFFSET`	Offset of the field that holds the location of the first central directory entry inside the "End of central directory record" relative to the start of the "End of central directory record".
`private static int`	`CFD_LOCATOR_RELATIVE_OFFSET`	Offset of the field that holds the location of the first central directory entry inside the "End of central directory record" relative to the "number of the disk with the start of the central directory".
`private static int`	`CFH_LEN`	Length of a "central directory" entry structure without file name, extra fields or comment.
`private static long`	`CFH_SIG`
`private java.nio.ByteBuffer`	`cfhBbuf`
`private byte[]`	`cfhBuf`
`private boolean`	`closed`	Whether the file is closed.
`private java.nio.ByteBuffer`	`dwordBbuf`
`private byte[]`	`dwordBuf`
`private java.lang.String`	`encoding`	The encoding to use for file names and the file comment.
`private java.util.List<ZipArchiveEntry>`	`entries`	List of entries in the order they appear inside the central directory.
`private static int`	`HASH_SIZE`
`private boolean`	`isSplitZipArchive`	Whether the zip archive is a split zip archive
`private static long`	`LFH_OFFSET_FOR_FILENAME_LENGTH`	Number of bytes in local file header up to the "length of file name" entry.
`private static int`	`MAX_EOCD_SIZE`	Maximum length of the "End of central directory record" with a file comment.
`(package private) static int`	`MIN_EOCD_SIZE`	Length of the "End of central directory record" - which is supposed to be the last structure of the archive - without file comment.
`private java.util.Map<java.lang.String,java.util.LinkedList<ZipArchiveEntry>>`	`nameMap`	Maps String to list of ZipArchiveEntrys, name -> actual entries.
`(package private) static int`	`NIBLET_MASK`
`private java.util.Comparator<ZipArchiveEntry>`	`offsetComparator`	Compares two ZipArchiveEntries based on their offset within the archive.
`private static byte[]`	`ONE_ZERO_BYTE`
`private static int`	`POS_0`
`private static int`	`POS_1`
`private static int`	`POS_2`
`private static int`	`POS_3`
`private java.nio.ByteBuffer`	`shortBbuf`
`private byte[]`	`shortBuf`
`private boolean`	`useUnicodeExtraFields`	Whether to look for and use Unicode extra fields.
`private java.nio.ByteBuffer`	`wordBbuf`
`private byte[]`	`wordBuf`
`private static int`	`ZIP64_EOCD_CFD_DISK_OFFSET`	Offset of the field that holds the disk number of the first central directory entry inside the "Zip64 end of central directory record" relative to the start of the "Zip64 end of central directory record".
`private static int`	`ZIP64_EOCD_CFD_LOCATOR_OFFSET`	Offset of the field that holds the location of the first central directory entry inside the "Zip64 end of central directory record" relative to the start of the "Zip64 end of central directory record".
`private static int`	`ZIP64_EOCD_CFD_LOCATOR_RELATIVE_OFFSET`	Offset of the field that holds the location of the first central directory entry inside the "Zip64 end of central directory record" relative to the "number of the disk with the start of the central directory".
`private static int`	`ZIP64_EOCDL_LENGTH`	Length of the "Zip64 end of central directory locator" - which should be right in front of the "end of central directory record" if one is present at all.
`private static int`	`ZIP64_EOCDL_LOCATOR_OFFSET`	Offset of the field that holds the location of the "Zip64 end of central directory record" inside the "Zip64 end of central directory locator" relative to the start of the "Zip64 end of central directory locator".
`private ZipEncoding`	`zipEncoding`	The zip encoding to use for file names and the file comment.

Constructor Summary

Constructors
Modifier	Constructor	Description
	`ZipFile(java.io.File f)`	Opens the given file for reading, assuming "UTF8" for file names.
	`ZipFile(java.io.File f, java.lang.String encoding)`	Opens the given file for reading, assuming the specified encoding for file names and scanning for unicode extra fields.
	`ZipFile(java.io.File f, java.lang.String encoding, boolean useUnicodeExtraFields)`	Opens the given file for reading, assuming the specified encoding for file names.
	`ZipFile(java.io.File f, java.lang.String encoding, boolean useUnicodeExtraFields, boolean ignoreLocalFileHeader)`	Opens the given file for reading, assuming the specified encoding for file names.
	`ZipFile(java.lang.String name)`	Opens the given file for reading, assuming "UTF8".
	`ZipFile(java.lang.String name, java.lang.String encoding)`	Opens the given file for reading, assuming the specified encoding for file names, scanning unicode extra fields.
	`ZipFile(java.nio.channels.SeekableByteChannel channel)`	Opens the given channel for reading, assuming "UTF8" for file names.
	`ZipFile(java.nio.channels.SeekableByteChannel channel, java.lang.String encoding)`	Opens the given channel for reading, assuming the specified encoding for file names.
	`ZipFile(java.nio.channels.SeekableByteChannel channel, java.lang.String archiveName, java.lang.String encoding, boolean useUnicodeExtraFields)`	Opens the given channel for reading, assuming the specified encoding for file names.
	`ZipFile(java.nio.channels.SeekableByteChannel channel, java.lang.String archiveName, java.lang.String encoding, boolean useUnicodeExtraFields, boolean ignoreLocalFileHeader)`	Opens the given channel for reading, assuming the specified encoding for file names.
`private`	`ZipFile(java.nio.channels.SeekableByteChannel channel, java.lang.String archiveName, java.lang.String encoding, boolean useUnicodeExtraFields, boolean closeOnError, boolean ignoreLocalFileHeader)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	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
`void`	`copyRawEntries(ZipArchiveOutputStream target, ZipArchiveEntryPredicate predicate)`	Transfer selected entries from this zipfile to a given #ZipArchiveOutputStream.
`private BoundedArchiveInputStream`	`createBoundedInputStream(long start, long remaining)`	Creates new BoundedInputStream, according to implementation of underlying archive channel.
`private void`	`fillNameMap()`
`protected void`	`finalize()`	Ensures that the close method of this zipfile is called when there are no more references to it.
`private long`	`getDataOffset(ZipArchiveEntry ze)`
`java.lang.String`	`getEncoding()`	The encoding to use for file names and the file comment.
`java.util.Enumeration<ZipArchiveEntry>`	`getEntries()`	Returns all entries.
`java.lang.Iterable<ZipArchiveEntry>`	`getEntries(java.lang.String name)`	Returns all named entries in the same order they appear within the archive's central directory.
`java.util.Enumeration<ZipArchiveEntry>`	`getEntriesInPhysicalOrder()`	Returns all entries in physical order.
`java.lang.Iterable<ZipArchiveEntry>`	`getEntriesInPhysicalOrder(java.lang.String name)`	Returns all named entries in the same order their contents appear within the archive.
`ZipArchiveEntry`	`getEntry(java.lang.String name)`	Returns a named entry - or `null` if no entry by that name exists.
`java.io.InputStream`	`getInputStream(ZipArchiveEntry ze)`	Returns an InputStream for reading the contents of the given entry.
`java.io.InputStream`	`getRawInputStream(ZipArchiveEntry ze)`	Expose the raw stream of the archive entry (compressed form).
`java.lang.String`	`getUnixSymlink(ZipArchiveEntry entry)`	Convenience method to return the entry's content as a String if isUnixSymlink() returns true for it, otherwise returns null.
`private java.util.Map<ZipArchiveEntry,ZipFile.NameAndComment>`	`populateFromCentralDirectory()`	Reads the central directory of the given archive and populates the internal tables with ZipArchiveEntry instances.
`private void`	`positionAtCentralDirectory()`	Searches for either the "Zip64 end of central directory locator" or the "End of central dir record", parses it and positions the stream at the first central directory record.
`private void`	`positionAtCentralDirectory32()`	Parses the "End of central dir record" and positions the stream at the first central directory record.
`private void`	`positionAtCentralDirectory64()`	Parses the "Zip64 end of central directory locator", finds the "Zip64 end of central directory record" using the parsed information, parses that and positions the stream at the first central directory record.
`private void`	`positionAtEndOfCentralDirectoryRecord()`	Searches for the and positions the stream at the start of the "End of central dir record".
`private void`	`readCentralDirectoryEntry(java.util.Map<ZipArchiveEntry,ZipFile.NameAndComment> noUTF8Flag)`	Reads an individual entry of the central directory, creats an ZipArchiveEntry from it and adds it to the global maps.
`private void`	`resolveLocalFileHeaderData(java.util.Map<ZipArchiveEntry,ZipFile.NameAndComment> entriesWithoutUTF8Flag)`	Walks through all recorded entries and adds the data available from the local file header.
`private void`	`sanityCheckLFHOffset(ZipArchiveEntry ze)`
`private int[]`	`setDataOffset(ZipArchiveEntry ze)`
`private void`	`setSizesAndOffsetFromZip64Extra(ZipArchiveEntry ze)`	If the entry holds a Zip64 extended information extra field, read sizes from there if the entry's sizes are set to 0xFFFFFFFFF, do the same for the offset of the local file header.
`private void`	`skipBytes(int count)`	Skips the given number of bytes or throws an EOFException if skipping failed.
`private boolean`	`startsWithLocalFileHeader()`	Checks whether the archive starts with a LFH.
`private boolean`	`tryToLocateSignature(long minDistanceFromEnd, long maxDistanceFromEnd, byte[] sig)`	Searches the archive backwards from minDistance to maxDistance for the given signature, positions the RandomaccessFile right at the signature if it has been found.

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

- Field Detail
  - HASH_SIZE
```
private static final int HASH_SIZE
```
    See Also:
    
    Constant Field Values
  - NIBLET_MASK
```
static final int NIBLET_MASK
```
    See Also:
    
    Constant Field Values
  - BYTE_SHIFT
```
static final int BYTE_SHIFT
```
    See Also:
    
    Constant Field Values
  - POS_0
```
private static final int POS_0
```
    See Also:
    
    Constant Field Values
  - POS_1
```
private static final int POS_1
```
    See Also:
    
    Constant Field Values
  - POS_2
```
private static final int POS_2
```
    See Also:
    
    Constant Field Values
  - POS_3
```
private static final int POS_3
```
    See Also:
    
    Constant Field Values
  - ONE_ZERO_BYTE
```
private static final byte[] ONE_ZERO_BYTE
```
  - entries
```
private final java.util.List<ZipArchiveEntry> entries
```
    List of entries in the order they appear inside the central directory.
  - nameMap
```
private final java.util.Map<java.lang.String,java.util.LinkedList<ZipArchiveEntry>> nameMap
```
    Maps String to list of ZipArchiveEntrys, name -> actual entries.
  - encoding
```
private final java.lang.String encoding
```
    The encoding to use for file names and the file comment.
    For a list of possible values see http://java.sun.com/j2se/1.5.0/docs/guide/intl/encoding.doc.html. Defaults to UTF-8.
  - zipEncoding
```
private final ZipEncoding zipEncoding
```
    The zip encoding to use for file names and the file comment.
  - archiveName
```
private final java.lang.String archiveName
```
    File name of actual source.
  - archive
```
private final java.nio.channels.SeekableByteChannel archive
```
    The actual data source.
  - useUnicodeExtraFields
```
private final boolean useUnicodeExtraFields
```
    Whether to look for and use Unicode extra fields.
  - closed
```
private volatile boolean closed
```
    Whether the file is closed.
  - isSplitZipArchive
```
private final boolean isSplitZipArchive
```
    Whether the zip archive is a split zip archive
  - dwordBuf
```
private final byte[] dwordBuf
```
  - wordBuf
```
private final byte[] wordBuf
```
  - cfhBuf
```
private final byte[] cfhBuf
```
  - shortBuf
```
private final byte[] shortBuf
```
  - dwordBbuf
```
private final java.nio.ByteBuffer dwordBbuf
```
  - wordBbuf
```
private final java.nio.ByteBuffer wordBbuf
```
  - cfhBbuf
```
private final java.nio.ByteBuffer cfhBbuf
```
  - shortBbuf
```
private final java.nio.ByteBuffer shortBbuf
```
  - centralDirectoryStartDiskNumber
```
private long centralDirectoryStartDiskNumber
```
  - centralDirectoryStartRelativeOffset
```
private long centralDirectoryStartRelativeOffset
```
  - centralDirectoryStartOffset
```
private long centralDirectoryStartOffset
```
  - CFH_LEN
```
private static final int CFH_LEN
```
    Length of a "central directory" entry structure without file name, extra fields or comment.
    
    See Also:
    
    Constant Field Values
  - CFH_SIG
```
private static final long CFH_SIG
```
  - MIN_EOCD_SIZE
```
static final int MIN_EOCD_SIZE
```
    Length of the "End of central directory record" - which is supposed to be the last structure of the archive - without file comment.
    
    See Also:
    
    Constant Field Values
  - MAX_EOCD_SIZE
```
private static final int MAX_EOCD_SIZE
```
    Maximum length of the "End of central directory record" with a file comment.
    
    See Also:
    
    Constant Field Values
  - CFD_LOCATOR_OFFSET
```
private static final int CFD_LOCATOR_OFFSET
```
    Offset of the field that holds the location of the first central directory entry inside the "End of central directory record" relative to the start of the "End of central directory record".
    
    See Also:
    
    Constant Field Values
  - CFD_DISK_OFFSET
```
private static final int CFD_DISK_OFFSET
```
    Offset of the field that holds the disk number of the first central directory entry inside the "End of central directory record" relative to the start of the "End of central directory record".
    
    See Also:
    
    Constant Field Values
  - CFD_LOCATOR_RELATIVE_OFFSET
```
private static final int CFD_LOCATOR_RELATIVE_OFFSET
```
    Offset of the field that holds the location of the first central directory entry inside the "End of central directory record" relative to the "number of the disk with the start of the central directory".
    
    See Also:
    
    Constant Field Values
  - ZIP64_EOCDL_LENGTH
```
private static final int ZIP64_EOCDL_LENGTH
```
    Length of the "Zip64 end of central directory locator" - which should be right in front of the "end of central directory record" if one is present at all.
    
    See Also:
    
    Constant Field Values
  - ZIP64_EOCDL_LOCATOR_OFFSET
```
private static final int ZIP64_EOCDL_LOCATOR_OFFSET
```
    Offset of the field that holds the location of the "Zip64 end of central directory record" inside the "Zip64 end of central directory locator" relative to the start of the "Zip64 end of central directory locator".
    
    See Also:
    
    Constant Field Values
  - ZIP64_EOCD_CFD_LOCATOR_OFFSET
```
private static final int ZIP64_EOCD_CFD_LOCATOR_OFFSET
```
    Offset of the field that holds the location of the first central directory entry inside the "Zip64 end of central directory record" relative to the start of the "Zip64 end of central directory record".
    
    See Also:
    
    Constant Field Values
  - ZIP64_EOCD_CFD_DISK_OFFSET
```
private static final int ZIP64_EOCD_CFD_DISK_OFFSET
```
    Offset of the field that holds the disk number of the first central directory entry inside the "Zip64 end of central directory record" relative to the start of the "Zip64 end of central directory record".
    
    See Also:
    
    Constant Field Values
  - ZIP64_EOCD_CFD_LOCATOR_RELATIVE_OFFSET
```
private static final int ZIP64_EOCD_CFD_LOCATOR_RELATIVE_OFFSET
```
    Offset of the field that holds the location of the first central directory entry inside the "Zip64 end of central directory record" relative to the "number of the disk with the start of the central directory".
    
    See Also:
    
    Constant Field Values
  - LFH_OFFSET_FOR_FILENAME_LENGTH
```
private static final long LFH_OFFSET_FOR_FILENAME_LENGTH
```
    Number of bytes in local file header up to the "length of file name" entry.
    
    See Also:
    
    Constant Field Values
  - offsetComparator
```
private final java.util.Comparator<ZipArchiveEntry> offsetComparator
```
    Compares two ZipArchiveEntries based on their offset within the archive.
    Won't return any meaningful results if one of the entries isn't part of the archive at all.
    
    Since:
    
    1.1
- Constructor Detail
  - ZipFile
```
public ZipFile(java.io.File f)
        throws java.io.IOException
```
    Opens the given file for reading, assuming "UTF8" for file names.
    
    Parameters:
    
    f - the archive.
    
    Throws:
    
    java.io.IOException - if an error occurs while reading the file.
  - ZipFile
```
public ZipFile(java.lang.String name)
        throws java.io.IOException
```
    Opens the given file for reading, assuming "UTF8".
    
    Parameters:
    
    name - name of the archive.
    
    Throws:
    
    java.io.IOException - if an error occurs while reading the file.
  - ZipFile
```
public ZipFile(java.lang.String name,
               java.lang.String encoding)
        throws java.io.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:
    
    java.io.IOException - if an error occurs while reading the file.
  - ZipFile
```
public ZipFile(java.io.File f,
               java.lang.String encoding)
        throws java.io.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:
    
    java.io.IOException - if an error occurs while reading the file.
  - ZipFile
```
public ZipFile(java.io.File f,
               java.lang.String encoding,
               boolean useUnicodeExtraFields)
        throws java.io.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:
    
    java.io.IOException - if an error occurs while reading the file.
  - ZipFile
```
public ZipFile(java.io.File f,
               java.lang.String encoding,
               boolean useUnicodeExtraFields,
               boolean ignoreLocalFileHeader)
        throws java.io.IOException
```
    Opens the given file for reading, assuming the specified encoding for file names.
    By default the central directory record and all local file headers of the archive will be read immediately which may take a considerable amount of time when the archive is big. The ignoreLocalFileHeader parameter can be set to true which restricts parsing to the central directory. Unfortunately the local file header may contain information not present inside of the central directory which will not be available when the argument is set to true. This includes the content of the Unicode extra field, so setting ignoreLocalFileHeader to true means useUnicodeExtraFields will be ignored effectively. Also getRawInputStream(org.apache.commons.compress.archivers.zip.ZipArchiveEntry) is always going to return null if ignoreLocalFileHeader is true.
    
    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.
    
    ignoreLocalFileHeader - whether to ignore information stored inside the local file header (see the notes in this method's javadoc)
    
    Throws:
    
    java.io.IOException - if an error occurs while reading the file.
    
    Since:
    
    1.19
  - ZipFile
```
public ZipFile(java.nio.channels.SeekableByteChannel channel)
        throws java.io.IOException
```
    Opens the given channel for reading, assuming "UTF8" for file names.
    SeekableInMemoryByteChannel allows you to read from an in-memory archive.
    
    Parameters:
    
    channel - the archive.
    
    Throws:
    
    java.io.IOException - if an error occurs while reading the file.
    
    Since:
    
    1.13
  - ZipFile
```
public ZipFile(java.nio.channels.SeekableByteChannel channel,
               java.lang.String encoding)
        throws java.io.IOException
```
    Opens the given channel for reading, assuming the specified encoding for file names.
    SeekableInMemoryByteChannel allows you to read from an in-memory archive.
    
    Parameters:
    
    channel - the archive.
    
    encoding - the encoding to use for file names, use null for the platform's default encoding
    
    Throws:
    
    java.io.IOException - if an error occurs while reading the file.
    
    Since:
    
    1.13
  - ZipFile
```
public ZipFile(java.nio.channels.SeekableByteChannel channel,
               java.lang.String archiveName,
               java.lang.String encoding,
               boolean useUnicodeExtraFields)
        throws java.io.IOException
```
    Opens the given channel for reading, assuming the specified encoding for file names.
    SeekableInMemoryByteChannel allows you to read from an in-memory archive.
    
    Parameters:
    
    channel - the archive.
    
    archiveName - name of the archive, used for error messages only.
    
    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:
    
    java.io.IOException - if an error occurs while reading the file.
    
    Since:
    
    1.13
  - ZipFile
```
public ZipFile(java.nio.channels.SeekableByteChannel channel,
               java.lang.String archiveName,
               java.lang.String encoding,
               boolean useUnicodeExtraFields,
               boolean ignoreLocalFileHeader)
        throws java.io.IOException
```
    Opens the given channel for reading, assuming the specified encoding for file names.
    SeekableInMemoryByteChannel allows you to read from an in-memory archive.
    
    By default the central directory record and all local file headers of the archive will be read immediately which may take a considerable amount of time when the archive is big. The ignoreLocalFileHeader parameter can be set to true which restricts parsing to the central directory. Unfortunately the local file header may contain information not present inside of the central directory which will not be available when the argument is set to true. This includes the content of the Unicode extra field, so setting ignoreLocalFileHeader to true means useUnicodeExtraFields will be ignored effectively. Also getRawInputStream(org.apache.commons.compress.archivers.zip.ZipArchiveEntry) is always going to return null if ignoreLocalFileHeader is true.
    
    Parameters:
    
    channel - the archive.
    
    archiveName - name of the archive, used for error messages only.
    
    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.
    
    ignoreLocalFileHeader - whether to ignore information stored inside the local file header (see the notes in this method's javadoc)
    
    Throws:
    
    java.io.IOException - if an error occurs while reading the file.
    
    Since:
    
    1.19
  - ZipFile
```
private ZipFile(java.nio.channels.SeekableByteChannel channel,
                java.lang.String archiveName,
                java.lang.String encoding,
                boolean useUnicodeExtraFields,
                boolean closeOnError,
                boolean ignoreLocalFileHeader)
         throws java.io.IOException
```
    Throws:
    
    java.io.IOException
- Method Detail
  - getEncoding
```
public java.lang.String getEncoding()
```
    The encoding to use for file names and the file comment.
    
    Returns:
    
    null if using the platform's default character encoding.
  - close
```
public void close()
           throws java.io.IOException
```
    Closes the archive.
    
    Specified by:
    
    close in interface java.lang.AutoCloseable
    
    Specified by:
    
    close in interface java.io.Closeable
    
    Throws:
    
    java.io.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 java.util.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 java.util.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(java.lang.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 java.lang.Iterable<ZipArchiveEntry> getEntries(java.lang.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 java.lang.Iterable<ZipArchiveEntry> getEntriesInPhysicalOrder(java.lang.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.
    
    Parameters:
    
    ze - the entry
    
    Returns:
    
    whether this class is able to read the given entry.
    
    Since:
    
    1.1
  - getRawInputStream
```
public java.io.InputStream getRawInputStream(ZipArchiveEntry ze)
```
    Expose the raw stream of the archive entry (compressed form).
    This method does not relate to how/if we understand the payload in the stream, since we really only intend to move it on to somewhere else.
    
    Parameters:
    
    ze - The entry to get the stream for
    
    Returns:
    
    The raw input stream containing (possibly) compressed data.
    
    Since:
    
    1.11
  - copyRawEntries
```
public void copyRawEntries(ZipArchiveOutputStream target,
                           ZipArchiveEntryPredicate predicate)
                    throws java.io.IOException
```
    Transfer selected entries from this zipfile to a given #ZipArchiveOutputStream. Compression and all other attributes will be as in this file.
    This method transfers entries based on the central directory of the zip file.
    
    Parameters:
    
    target - The zipArchiveOutputStream to write the entries to
    
    predicate - A predicate that selects which entries to write
    
    Throws:
    
    java.io.IOException - on error
  - getInputStream
```
public java.io.InputStream getInputStream(ZipArchiveEntry ze)
                                   throws java.io.IOException
```
    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. The returned stream implements InputStreamStatistics.
    
    Throws:
    
    java.io.IOException - if unable to create an input stream from the zipentry
  - getUnixSymlink
```
public java.lang.String getUnixSymlink(ZipArchiveEntry entry)
                                throws java.io.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:
    
    java.io.IOException - problem with content's input stream
    
    Since:
    
    1.5
  - finalize
```
protected void finalize()
                 throws java.lang.Throwable
```
    Ensures that the close method of this zipfile is called when there are no more references to it.
    
    Overrides:
    
    finalize in class java.lang.Object
    
    Throws:
    
    java.lang.Throwable
    
    See Also:
    
    close()
  - populateFromCentralDirectory
```
private java.util.Map<ZipArchiveEntry,ZipFile.NameAndComment> populateFromCentralDirectory()
                                                                                          throws java.io.IOException
```
    Reads the central directory of the given archive and populates the internal tables with ZipArchiveEntry instances.
    The ZipArchiveEntrys will know all data that can be obtained from the central directory alone, but not the data that requires the local file header or additional data to be read.
    
    Returns:
    
    a map of zipentries that didn't have the language encoding flag set when read.
    
    Throws:
    
    java.io.IOException
  - readCentralDirectoryEntry
```
private void readCentralDirectoryEntry(java.util.Map<ZipArchiveEntry,ZipFile.NameAndComment> noUTF8Flag)
                                throws java.io.IOException
```
    Reads an individual entry of the central directory, creats an ZipArchiveEntry from it and adds it to the global maps.
    
    Parameters:
    
    noUTF8Flag - map used to collect entries that don't have their UTF-8 flag set and whose name will be set by data read from the local file header later. The current entry may be added to this map.
    
    Throws:
    
    java.io.IOException
  - sanityCheckLFHOffset
```
private void sanityCheckLFHOffset(ZipArchiveEntry ze)
                           throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - setSizesAndOffsetFromZip64Extra
```
private void setSizesAndOffsetFromZip64Extra(ZipArchiveEntry ze)
                                      throws java.io.IOException
```
    If the entry holds a Zip64 extended information extra field, read sizes from there if the entry's sizes are set to 0xFFFFFFFFF, do the same for the offset of the local file header.
    Ensures the Zip64 extra either knows both compressed and uncompressed size or neither of both as the internal logic in ExtraFieldUtils forces the field to create local header data even if they are never used - and here a field with only one size would be invalid.
    
    Throws:
    
    java.io.IOException
  - positionAtCentralDirectory
```
private void positionAtCentralDirectory()
                                 throws java.io.IOException
```
    Searches for either the "Zip64 end of central directory locator" or the "End of central dir record", parses it and positions the stream at the first central directory record.
    
    Throws:
    
    java.io.IOException
  - positionAtCentralDirectory64
```
private void positionAtCentralDirectory64()
                                   throws java.io.IOException
```
    Parses the "Zip64 end of central directory locator", finds the "Zip64 end of central directory record" using the parsed information, parses that and positions the stream at the first central directory record. Expects stream to be positioned right behind the "Zip64 end of central directory locator"'s signature.
    
    Throws:
    
    java.io.IOException
  - positionAtCentralDirectory32
```
private void positionAtCentralDirectory32()
                                   throws java.io.IOException
```
    Parses the "End of central dir record" and positions the stream at the first central directory record. Expects stream to be positioned at the beginning of the "End of central dir record".
    
    Throws:
    
    java.io.IOException
  - positionAtEndOfCentralDirectoryRecord
```
private void positionAtEndOfCentralDirectoryRecord()
                                            throws java.io.IOException
```
    Searches for the and positions the stream at the start of the "End of central dir record".
    
    Throws:
    
    java.io.IOException
  - tryToLocateSignature
```
private boolean tryToLocateSignature(long minDistanceFromEnd,
                                     long maxDistanceFromEnd,
                                     byte[] sig)
                              throws java.io.IOException
```
    Searches the archive backwards from minDistance to maxDistance for the given signature, positions the RandomaccessFile right at the signature if it has been found.
    
    Throws:
    
    java.io.IOException
  - skipBytes
```
private void skipBytes(int count)
                throws java.io.IOException
```
    Skips the given number of bytes or throws an EOFException if skipping failed.
    
    Throws:
    
    java.io.IOException
  - resolveLocalFileHeaderData
```
private void resolveLocalFileHeaderData(java.util.Map<ZipArchiveEntry,ZipFile.NameAndComment> entriesWithoutUTF8Flag)
                                 throws java.io.IOException
```
    Walks through all recorded entries and adds the data available from the local file header.
    Also records the offsets for the data to read from the entries.
    
    Throws:
    
    java.io.IOException
  - fillNameMap
```
private void fillNameMap()
```
  - setDataOffset
```
private int[] setDataOffset(ZipArchiveEntry ze)
                     throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - getDataOffset
```
private long getDataOffset(ZipArchiveEntry ze)
                    throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - startsWithLocalFileHeader
```
private boolean startsWithLocalFileHeader()
                                   throws java.io.IOException
```
    Checks whether the archive starts with a LFH. If it doesn't, it may be an empty archive.
    
    Throws:
    
    java.io.IOException
  - createBoundedInputStream
```
private BoundedArchiveInputStream createBoundedInputStream(long start,
                                                           long remaining)
```
    Creates new BoundedInputStream, according to implementation of underlying archive channel.

Class ZipFile

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

HASH_SIZE

NIBLET_MASK

BYTE_SHIFT

POS_0

POS_1

POS_2

POS_3

ONE_ZERO_BYTE

entries

nameMap

encoding

zipEncoding

archiveName

archive

useUnicodeExtraFields

closed

isSplitZipArchive

dwordBuf

wordBuf

cfhBuf

shortBuf

dwordBbuf

wordBbuf

cfhBbuf

shortBbuf

centralDirectoryStartDiskNumber

centralDirectoryStartRelativeOffset

centralDirectoryStartOffset

CFH_LEN

CFH_SIG

MIN_EOCD_SIZE

MAX_EOCD_SIZE

CFD_LOCATOR_OFFSET

CFD_DISK_OFFSET

CFD_LOCATOR_RELATIVE_OFFSET

ZIP64_EOCDL_LENGTH

ZIP64_EOCDL_LOCATOR_OFFSET

ZIP64_EOCD_CFD_LOCATOR_OFFSET

ZIP64_EOCD_CFD_DISK_OFFSET

ZIP64_EOCD_CFD_LOCATOR_RELATIVE_OFFSET

LFH_OFFSET_FOR_FILENAME_LENGTH

offsetComparator

Constructor Detail

ZipFile

ZipFile

ZipFile

ZipFile

ZipFile

ZipFile

ZipFile

ZipFile

ZipFile

ZipFile

ZipFile

Method Detail

getEncoding

close

closeQuietly

getEntries

getEntriesInPhysicalOrder

getEntry

getEntries

getEntriesInPhysicalOrder

canReadEntryData

getRawInputStream

copyRawEntries

getInputStream

getUnixSymlink

finalize

populateFromCentralDirectory

readCentralDirectoryEntry

sanityCheckLFHOffset

setSizesAndOffsetFromZip64Extra