Java Zip - Quick Guide

java.util.zip - Adler32

简介

The java.util.zip.Adler32 class is a class that can be used to compute the Adler-32 checksum of a data stream. An Adler-32 checksum is almost as reliable as a CRC-32 but can be computed much faster.

类声明

Following is the declaration for java.util.zip.Adler32 class −

public class Adler32
   extends Object
      implements Checksum

构造函数

序号	构造函数 & 描述
1	Adler32() Creates a new Adler32 object.

类方法

序号	方法 & 描述
1	long getValue() Returns the checksum value.
2	void reset() Resets the checksum to initial value.
3	void update(byte[] b) Updates the checksum with the specified array of bytes.
4	void update(byte[] b, int off, int len) Updates the checksum with the specified array of bytes.
5	void update(int b) Updates the checksum with the specified byte (the low eight bits of the argument b).

继承的方法

这个类继承了以下类的方法 −

java.lang.Object

java.util.zip - CheckedInputStream Class

简介

The java.util.zip.CheckedInputStream class is an input stream that also maintains a checksum of the data being read. The checksum can then be used to verify the integrity of the input data.

类声明

Following is the declaration for java.util.zip.CheckedInputStream class −

public class CheckedInputStream
   extends FilterInputStream

构造函数

序号	构造函数 & 描述
1	CheckedInputStream(InputStream in, Checksum cksum) Creates an input stream using the specified Checksum.

类方法

序号	方法 & 描述
1	Checksum getChecksum() Returns the Checksum for this input stream.
2	int read() Reads a byte.
3	int read(byte[] buf, int off, int len) Reads into an array of bytes.
4	long skip(long n) Skips specified number of bytes of input.

继承的方法

这个类继承了以下类的方法 −

java.io.FilterInputStream
java.lang.Object

java.util.zip - CheckedOutputStream Class

简介

The java.util.zip.CheckedOutputStream class is an output stream that also maintains a checksum of the data being written. The checksum can then be used to verify the integrity of the output data.

类声明

Following is the declaration for java.util.zip.CheckedOutputStream class −

public class CheckedOutputStream
   extends FilterOutputStream

构造函数

序号	构造函数 & 描述
1	CheckedOutputStream(OutputStream out, Checksum cksum) Creates an output stream with the specified Checksum.

类方法

序号	方法 & 描述
1	Checksum getChecksum() Returns the Checksum for this output stream.
2	void write(byte[] b, int off, int len) Writes an array of bytes.
3	void write(int b) Writes a byte.

继承的方法

这个类继承了以下类的方法 −

java.io.FilterOutputStream
java.lang.Object

java.util.zip - CRC32 Class

简介

The java.util.zip.CRC32 class is a class that can be used to compute the CRC-32 of a data stream.

类声明

Following is the declaration for java.util.zip.CRC32 class −

public class CRC32
   extends Object
      implements Checksum

构造函数

序号	构造函数 & 描述
1	CRC32() Creates a new CRC32 object.

类方法

序号	方法 & 描述
1	long getValue() Returns the CRC-32 value.
2	void reset() Resets the CRC-32 to initial value.
3	void update(byte[] b) Updates the CRC-32 checksum with the specified array of bytes.
4	void update(byte[] b, int off, int len) Updates the CRC-32 checksum with the specified array of bytes.
5	void update(int b) Updates the CRC-32 checksum with the specified byte (the low eight bits of the argument b).

继承的方法

这个类继承了以下类的方法 −

java.lang.Object

java.util.zip - Deflater Class

简介

The java.util.zip.Deflater class provides support for general purpose compression using the popular ZLIB compression library. The ZLIB compression library was initially developed as part of the PNG graphics standard and is not protected by patents. It is fully described in the specifications at the java.util.zip package description.

类声明

Following is the declaration for java.util.zip.Deflater class −

public class Deflater
   extends Object

字段

Following are the fields for java.util.zip.Deflater class −

static int BEST_COMPRESSION − Compression level for best compression.
static int BEST_SPEED − Compression level for fastest compression.
static int DEFAULT_COMPRESSION − Default compression level.
static int DEFAULT_STRATEGY − Default compression strategy.
static int DEFLATED − Compression method for the deflate algorithm (the only one currently supported).
static int FILTERED − Compression strategy best used for data consisting mostly of small values with a somewhat random distribution.
static int FULL_FLUSH − Compression flush mode used to flush out all pending output and reset the deflater.
static int HUFFMAN_ONLY − Compression strategy for Huffman coding only.
static int NO_COMPRESSION − Compression level for no compression.
static int NO_FLUSH − Compression flush mode used to achieve best compression result.
static int SYNC_FLUSH − Compression flush mode used to flush out all pending output; may degrade compression for some compression algorithms.

构造函数

序号	构造函数 & 描述
1	Deflater() Creates a new compressor with the default compression level.
2	Deflater(int level) Creates a new compressor using the specified compression level.
3	Deflater(int level, boolean nowrap) Creates a new compressor using the specified compression level.

序号

构造函数 & 描述

Deflater()

Creates a new compressor with the default compression level.

Deflater(int level)

Creates a new compressor using the specified compression level.

Deflater(int level, boolean nowrap)

Creates a new compressor using the specified compression level.

类方法

序号	方法 & 描述
1	int deflate(byte[] b) Compresses the input data and fills specified buffer with compressed data.
2	int deflate(byte[] b, int off, int len) Compresses the input data and fills specified buffer with compressed data.
3	int deflate(byte[] b, int off, int len, int flush) Compresses the input data and fills the specified buffer with compressed data.
4	void end() Closes the compressor and discards any unprocessed input.
5	void finish() When called, indicates that compression should end with the current contents of the input buffer.
6	boolean finished() Returns true if the end of the compressed data output stream has been reached.
7	int getAdler() Returns the ADLER-32 value of the uncompressed data.
8	long getBytesRead() Returns the total number of uncompressed bytes input so far.
9	long getBytesWritten() Returns the total number of compressed bytes output so far.
10	int getTotalIn() Returns the total number of uncompressed bytes input so far.
11	int getTotalOut() Returns the total number of compressed bytes output so far.
12	boolean needsInput() Returns true if the input data buffer is empty and setInput() should be called in order to provide more input.
13	void reset() Resets deflater so that a new set of input data can be processed.
14	void setDictionary(byte[] b) Sets preset dictionary for compression.
15	void setDictionary(byte[] b, int off, int len) Sets preset dictionary for compression.
16	void setInput(byte[] b) Sets input data for compression.
17	void setInput(byte[] b, int off, int len) Sets input data for compression.
18	void setLevel(int level) Sets the current compression level to the specified value.
19	void setStrategy(int strategy) Sets the compression strategy to the specified value.

继承的方法

这个类继承了以下类的方法 −

java.lang.Object

java.util.zip - DeflaterInputStream Class

简介

The java.util.zip.DeflaterInputStream class implements an input stream filter for compressing data in the "deflate" compression format.

类声明

Following is the declaration for java.util.zip.DeflaterInputStream class −

public class DeflaterInputStream
   extends FilterInputStream

字段

Following are the fields for java.util.zip.DeflaterInputStream class −

protected byte[] buf − Input buffer for reading compressed data.
protected Deflater def − Compressor for this stream.

构造函数

序号	构造函数 & 描述
1	DeflaterInputStream(InputStream in) Creates a new input stream with a default compressor and buffer size.
2	DeflaterInputStream(InputStream in, Deflater defl) Creates a new input stream with the specified compressor and a default buffer size.
3	DeflaterInputStream(InputStream in, Deflater defl, int bufLen) Creates a new input stream with the specified compressor and buffer size.

序号

构造函数 & 描述

DeflaterInputStream(InputStream in)

Creates a new input stream with a default compressor and buffer size.

DeflaterInputStream(InputStream in, Deflater defl)

Creates a new input stream with the specified compressor and a default buffer size.

DeflaterInputStream(InputStream in, Deflater defl, int bufLen)

Creates a new input stream with the specified compressor and buffer size.

类方法

序号	方法 & 描述
1	int available() Returns 0 after EOF has been reached, otherwise always return 1.
2	void close() Closes this input stream and its underlying input stream, discarding any pending uncompressed data.
3	int read() Reads a single byte of compressed data from the input stream.
4	int read(byte[] b, int off, int len) Reads compressed data into a byte array.
5	long skip(long n) Skips over and discards data from the input stream.

继承的方法

这个类继承了以下类的方法 −

java.io.FilterInputStream
java.lang.Object

java.util.zip - DeflaterOutputStream Class

简介

The java.util.zip.DeflaterOutputStream class implements an output stream filter for compressing data in the "deflate" compression format. It is also used as the basis for other types of compression filters, such as GZIPOutputStream.

类声明

Following is the declaration for java.util.zip.DeflaterOutputStream class −

public class DeflaterOutputStream
   extends FilterOutputStream

字段

Following are the fields for java.util.zip.DeflaterOutputStream class −

protected byte[] buf − Output buffer for writing compressed data.
protected Deflater def − Compressor for this stream.

构造函数

序号	构造函数 & 描述
1	DeflaterOutputStream(OutputStream out) Creates a new output stream with a default compressor and buffer size.
2	DeflaterOutputStream(OutputStream out, boolean syncFlush) Creates a new output stream with a default compressor, a default buffer size and the specified flush mode.
3	DeflaterOutputStream(OutputStream out, Deflater def) Creates a new output stream with the specified compressor and a default buffer size.
4	DeflaterOutputStream(OutputStream out, Deflater def, boolean syncFlush) Creates a new output stream with the specified compressor, flush mode and a default buffer size.
5	DeflaterOutputStream(OutputStream out, Deflater def, int size) Creates a new output stream with the specified compressor and buffer size.
6	DeflaterOutputStream(OutputStream out, Deflater def, int size, boolean syncFlush) Creates a new output stream with the specified compressor, buffer size and flush mode.

类方法

序号	方法 & 描述
1	void close() Writes remaining compressed data to the output stream and closes the underlying stream.
2	void finish() Finishes writing compressed data to the output stream without closing the underlying stream.
3	void flush() Flushes the compressed output stream.
4	void write(byte[] b, int off, int len) Writes an array of bytes to the compressed output stream.
5	void write(int b) Writes a byte to the compressed output stream.

继承的方法

这个类继承了以下类的方法 −

java.io.FilterOutputStream
java.lang.Object

java.util.zip - GZIPInputStream Class

简介

The java.util.zip.GZIPInputStream class implements a stream filter for reading compressed data in the GZIP file format.

类声明

Following is the declaration for java.util.zip.GZIPInputStream class −

public class GZIPInputStream
   extends InflaterInputStream

字段

Following are the fields for java.util.zip.GZIPInputStream class −

protected CRC32 crc − CRC-32 for uncompressed data.
protected boolean eos − Indicates end of input stream.
static int GZIP_MAGIC − GZIP header magic number.

构造函数

序号	构造函数 & 描述
1	GZIPInputStream(InputStream in) Creates a new input stream with a default buffer size.
2	GZIPInputStream(InputStream in, int size) Creates a new input stream with the specified buffer size.

序号

构造函数 & 描述

GZIPInputStream(InputStream in)

Creates a new input stream with a default buffer size.

GZIPInputStream(InputStream in, int size)

Creates a new input stream with the specified buffer size.

类方法

序号	方法 & 描述
1	void close() Closes this input stream and releases any system resources associated with the stream.
2	int read(byte[] buf, int off, int len) Reads uncompressed data into an array of bytes.

继承的方法

这个类继承了以下类的方法 −

java.util.zip.InflaterInputStream
java.io.FilterInputStream
java.lang.Object

java.util.zip - GZIPOutputStream Class

简介

The java.util.zip.GZIPOutputStream class implements a stream filter for writing compressed data in the GZIP file format.

类声明

Following is the declaration for java.util.zip.GZIPOutputStream class −

public class GZIPOutputStream
   extends DeflaterOutputStream

字段

Following are the fields for java.util.zip.GZIPOutputStream class −

protected CRC32 crc − CRC-32 for uncompressed data.

构造函数

序号	构造函数 & 描述
1	GZIPOutputStream(OutputStream out) Creates a new output stream with a default buffer size.
2	GZIPOutputStream(OutputStream out, boolean syncFlush) Creates a new output stream with a default buffer size and the specified flush mode.
3	GZIPOutputStream(OutputStream out, int size) Creates a new output stream with the specified buffer size.
4	GZIPOutputStream(OutputStream out, int size, boolean syncFlush) Creates a new output stream with the specified buffer size and flush mode.

类方法

序号	方法 & 描述
1	void finish() Finishes writing compressed data to the output stream without closing the underlying stream.
2	int write(byte[] buf, int off, int len) Writes array of bytes to the compressed output stream.

继承的方法

这个类继承了以下类的方法 −

java.util.zip.DeflaterOutputStream
java.io.FilterOutputStream
java.lang.Object

java.util.zip - Inflater Class

简介

The java.util.zip.Inflater class provides support for general purpose decompression using the popular ZLIB compression library. The ZLIB compression library was initially developed as part of the PNG graphics standard and is not protected by patents. It is fully described in the specifications at the java.util.zip package description.

类声明

Following is the declaration for java.util.zip.Inflater class −

public class Inflater
   extends Object

构造函数

序号	构造函数 & 描述
1	Inflater() 创建一个新的解压缩程序。
2	Inflater(boolean nowrap) 创建一个新的解压缩程序。

序号

构造函数 & 描述

Inflater()

创建一个新的解压缩程序。

Inflater(boolean nowrap)

创建一个新的解压缩程序。

类方法

序号	方法 & 描述
1	void end() Closes the decompressor and discards any unprocessed input.
2	boolean finished() Returns true if the end of the compressed data stream has been reached.
3	int getAdler() Returns the ADLER-32 value of the uncompressed data.
4	long getBytesRead() Returns the total number of compressed bytes input so far.
5	long getBytesWritten() Returns the total number of uncompressed bytes output so far.
6	int getRemaining() Returns the total number of bytes remaining in the input buffer.
7	int getTotalIn() Returns the total number of compressed bytes input so far.
8	int getTotalOut() Returns the total number of uncompressed bytes output so far.
9	int inflate(byte[] b) Uncompresses bytes into specified buffer.
10	int inflate(byte[] b, int off, int len) Uncompresses bytes into specified buffer.
11	boolean needsDictionary() Returns true if a preset dictionary is needed for decompression.
12	boolean needsInput() Returns true if no data remains in the input buffer.
13	void reset() Resets inflater so that a new set of input data can be processed.
14	void setDictionary(byte[] b) 将预设字典设置为给定的字节数组。
15	void setDictionary(byte[] b, int off, int len) 将预设字典设置为给定的字节数组。
16	void setInput(byte[] b) Sets input data for decompression.
17	void setInput(byte[] b, int off, int len) Sets input data for decompression.

继承的方法

这个类继承了以下类的方法 −

java.lang.Object

java.util.zip - InflaterInputStream Class

简介

The java.util.zip.InflaterInputStream class implements a stream filter for uncompressing data in the "deflate" compression format. It is also used as the basis for other decompression filters, such as GZIPInputStream.

类声明

Following is the declaration for java.util.zip.InflaterInputStream class −

public class InflaterInputStream
   extends FilterInputStream

字段

Following are the fields for java.util.zip.InflaterInputStream class −

protected byte[] buf − Input buffer for decompression.
protected Inflater inf − Decompressor for this stream.
protected int len − Length of input buffer.

构造函数

序号	构造函数 & 描述
1	InflaterInputStream(InputStream in) Creates a new input stream with a default decompressor and buffer size.
2	InflaterInputStream(InputStream in, Inflater inf) Creates a new input stream with the specified decompressor and a default buffer size.
3	InflaterInputStream(InputStream in, Inflater inf, int size) Creates a new input stream with the specified decompressor and buffer size.

序号

构造函数 & 描述

InflaterInputStream(InputStream in)

Creates a new input stream with a default decompressor and buffer size.

InflaterInputStream(InputStream in, Inflater inf)

Creates a new input stream with the specified decompressor and a default buffer size.

InflaterInputStream(InputStream in, Inflater inf, int size)

Creates a new input stream with the specified decompressor and buffer size.

类方法

序号	方法 & 描述
1	int available() Returns 0 after EOF has been reached, otherwise always return 1.
2	void close() Closes this input stream and releases any system resources associated with the stream.
3	void mark(int readlimit) Marks the current position in this input stream.
4	boolean markSupported() Tests if this input stream supports the mark and reset methods.
5	int read() Reads a byte of uncompressed data.
6	int read(byte[] b, int off, int len) Reads uncompressed data into an array of bytes.
7	void reset() Repositions this stream to the position at the time the mark method was last called on this input stream.
8	long skip(long n) Skips specified number of bytes of uncompressed data.

继承的方法

这个类继承了以下类的方法 −

java.io.FilterInputStream
java.lang.Object

java.util.zip - InflaterOutputStream Class

简介

The java.util.zip.InflaterOutputStream class implements an output stream filter for uncompressing data stored in the "deflate" compression format.

类声明

Following is the declaration for java.util.zip.InflaterOutputStream class −

public class InflaterOutputStream
   extends FilterOutputStream

字段

Following are the fields for java.util.zip.InflaterOutputStream class −

protected byte[] buf − Output buffer for writing uncompressed data.
protected Inflater inf − Decompressor for this stream.

构造函数

序号	构造函数 & 描述
1	InflaterOutputStream(OutputStream out) Creates a new output stream with a default decompressor and buffer size.
2	InflaterOutputStream(OutputStream out, Inflater infl) Creates a new output stream with the specified decompressor and a default buffer size.
3	InflaterOutputStream(OutputStream out, Inflater infl, int bufLen) Creates a new output stream with the specified decompressor and buffer size.

序号

构造函数 & 描述

InflaterOutputStream(OutputStream out)

Creates a new output stream with a default decompressor and buffer size.

InflaterOutputStream(OutputStream out, Inflater infl)

Creates a new output stream with the specified decompressor and a default buffer size.

InflaterOutputStream(OutputStream out, Inflater infl, int bufLen)

Creates a new output stream with the specified decompressor and buffer size.

类方法

序号	方法 & 描述
1	void close() Writes remaining compressed data to the output stream and closes the underlying stream.
2	void finish() Finishes writing uncompressed data to the output stream without closing the underlying stream.
3	void flush() Flushes this output stream, forcing any pending buffered output bytes to be written.
4	void write(byte[] b, int off, int len) Writes an array of bytes to the compressed output stream.
5	void write(int b) Writes a byte to the compressed output stream.

继承的方法

这个类继承了以下类的方法 −

java.io.FilterOutputStream
java.lang.Object

java.util.zip - ZipEntry Class

简介

The java.util.zip.ZipEntry class is used to represent a ZIP file entry.

类声明

Following is the declaration for java.util.zip.ZipEntry class −

public class ZipEntry
   extends Object
      implements Cloneable

字段

Following are the fields for java.util.zip.ZipEntry class −

protected byte[] buf − Output buffer for writing uncompressed data.
protected Inflater inf − Decompressor for this stream.
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 DEFLATED − Compression method for compressed (deflated) entries.
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
static int STORED − Compression method for uncompressed entries.

构造函数

序号	构造函数 & 描述
1	ZipEntry(String name) Creates a new zip entry with the specified name.
2	ZipEntry(ZipEntry e) Creates a new zip entry with fields taken from the specified zip entry.

序号

构造函数 & 描述

ZipEntry(String name)

Creates a new zip entry with the specified name.

ZipEntry(ZipEntry e)

Creates a new zip entry with fields taken from the specified zip entry.

类方法

序号	方法 & 描述
1	Object clone() Returns a copy of this entry.
2	String getComment() Returns the comment string for the entry, or null if none.
3	long getCompressedSize() Returns the size of the compressed entry data, or -1 if not known.
4	long getCrc() Returns the CRC-32 checksum of the uncompressed entry data, or -1 if not known.
5	byte[] getExtra() Returns the extra field data for the entry, or null if none.
6	int getMethod() Returns the compression method of the entry, or -1 if not specified.
7	String getName() Returns the name of the entry.
8	long getSize() Returns the uncompressed size of the entry data, or -1 if not known.
9	long getTime() Returns the modification time of the entry, or -1 if not specified.
10	int hashCode() Returns the hash code value for this entry.
11	boolean isDirectory() Returns true if this is a directory entry.
12	void setComment(String comment) Sets the optional comment string for the entry.
13	void setCrc(long crc) Sets the CRC-32 checksum of the uncompressed entry data.
14	void setExtra(byte[] extra) Sets the optional extra field data for the entry.
15	void setMethod(int method) Sets the compression method for the entry.
16	void setSize(long size) Sets the uncompressed size of the entry data.
17	void setTime(long time) Sets the modification time of the entry.
18	String toString() Returns a string representation of the ZIP entry.

继承的方法

这个类继承了以下类的方法 −

java.io.FilterOutputStream
java.lang.Object

java.util.zip - ZipFile Class

简介

The java.util.zip.ZipFile class is used to read entries from a zip file.

类声明

Following is the declaration for java.util.zip.ZipFile class −

public class ZipFile
   extends Object
      implements Closeable

字段

Following are the fields for java.util.zip.ZipFile class −

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
static int OPEN_DELETE − Mode flag to open a zip file and mark it for deletion.
static int OPEN_READ − Mode flag to open a zip file for reading.

构造函数

序号	构造函数 & 描述
1	ZipFile(File file) Opens a ZIP file for reading given the specified File object.
2	ZipFile(File file, Charset charset) Opens a ZIP file for reading given the specified File object.
3	ZipFile(File file, int mode) Opens a new ZipFile to read from the specified File object in the specified mode.
4	ZipFile(File file, int mode, Charset charset) Opens a new ZipFile to read from the specified File object in the specified mode.
5	ZipFile(String name) Opens a zip file for reading.
6	ZipFile(String name, Charset charset) Opens a zip file for reading.

类方法

序号	方法 & 描述
1	void close() Closes the ZIP file.
2	Enumeration<? extends ZipEntry> entries() Returns an enumeration of the ZIP file entries.
3	String getComment() Returns the zip file comment, or null if none.
4	ZipEntry getEntry(String name) Returns the zip file entry for the specified name, or null if not found.
5	InputStream getInputStream(ZipEntry entry) Returns an input stream for reading the contents of the specified zip file entry.
6	String getName() Returns the path name of the ZIP file.
7	int size() Returns the number of entries in the ZIP file.

继承的方法

这个类继承了以下类的方法 −

Java.lang.Object

java.util.zip - ZipInputStream Class

简介

The java.util.zip.ZipInputStream class implements an input stream filter for reading files in the ZIP file format. Includes support for both compressed and uncompressed entries.

类声明

Following is the declaration for java.util.zip.ZipInputStream class −

public class ZipInputStream
   extends InflaterInputStream

字段

Following are the fields for java.util.zip.ZipInputStream class −

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

构造函数

序号	构造函数 & 描述
1	ZipInputStream(InputStream in) Creates a new ZIP input stream.
2	ZipInputStream(InputStream in, Charset charset) Creates a new ZIP input stream.

序号

构造函数 & 描述

ZipInputStream(InputStream in)

Creates a new ZIP input stream.

ZipInputStream(InputStream in, Charset charset)

Creates a new ZIP input stream.

类方法

序号	方法 & 描述
1	int available() Returns 0 after EOF has reached for the current entry data, otherwise always return 1.
2	void close() Closes this input stream and releases any system resources associated with the stream.
3	void closeEntry() Closes the current ZIP entry and positions the stream for reading the next entry.
4	ZipEntry getNextEntry() Reads the next ZIP file entry and positions the stream at the beginning of the entry data.
5	int read(byte[] b, int off, int len) Reads from the current ZIP entry into an array of bytes.
6	long skip(long n) Skips specified number of bytes in the current ZIP entry.

继承的方法

这个类继承了以下类的方法 −

java.util.zip.InflaterInputStream
java.io.FilterInputStream
java.lang.Object

java.util.zip - ZipOutputStream Class

简介

The java.util.zip.ZipOutputStream class implements an output stream filter for writing files in the ZIP file format. Includes support for both compressed and uncompressed entries.

类声明

Following is the declaration for java.util.zip.ZipOutputStream class −

public class ZipOutputStream
   extends DeflaterOutputStream

字段

Following are the fields for java.util.zip.ZipOutputStream class −

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 DEFLATED − Compression method for compressed (DEFLATED) entries.
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
static int STORED − Compression method for uncompressed (STORED) entries.

构造函数

序号	构造函数 & 描述
1	ZipOutputStream(OutputStream out) Creates a new ZIP output stream.
2	ZipOutputStream(OutputStream out, Charset charset) Creates a new ZIP output stream.

序号

构造函数 & 描述

ZipOutputStream(OutputStream out)

Creates a new ZIP output stream.

ZipOutputStream(OutputStream out, Charset charset)

Creates a new ZIP output stream.

类方法

序号	方法 & 描述
1	void close() Closes the ZIP output stream as well as the stream being filtered.
2	void closeEntry() Closes the current ZIP entry and positions the stream for writing the next entry.
3	void finish() Finishes writing the contents of the ZIP output stream without closing the underlying stream.
4	void putNextEntry(ZipEntry e) Begins writing a new ZIP file entry and positions the stream to the start of the entry data.
5	void setComment(String comment) Sets the ZIP file comment.
6	void setLevel(int level) Sets the compression level for subsequent entries which are DEFLATED.
7	void setMethod(int method) Sets the default compression method for subsequent entries.
8	void write(byte[] b, int off, int len) Writes an array of bytes to the current ZIP entry data.

继承的方法

这个类继承了以下类的方法 −

java.util.zip.DeflaterOutputStream
java.io.FilterOutputStream
java.lang.Object

Java Zip - Exceptions

简介

The java.util.zip Exceptions contains the exceptions which can occur during zip/unzip operations.

接口总结

序号	Exception & Description
1	DataFormatException Signals that a data format error has occurred.
2	ZipException Signals that a Zip exception of some sort has occurred.

序号

Exception & Description

DataFormatException

Signals that a data format error has occurred.

ZipException

Signals that a Zip exception of some sort has occurred.

Java Zip - Errors

简介

The java.util.zip Error contains the error which can occur during zip/unzip operations.

接口总结

序号	错误 & 描述
1	ZipError Signals that an unrecoverable error has occurred.

java.util.zip 包

java.util.zip 软件包附加功能

Java Zip - Quick Guide

java.util.zip - Adler32

简介

类声明

构造函数

类方法

继承的方法

java.util.zip - CheckedInputStream Class

简介

类声明

构造函数

类方法

继承的方法

java.util.zip - CheckedOutputStream Class

简介

类声明

构造函数

类方法

继承的方法

java.util.zip - CRC32 Class

简介

类声明

构造函数

类方法

继承的方法

java.util.zip - Deflater Class

简介

类声明

字段

构造函数

类方法

继承的方法

java.util.zip - DeflaterInputStream Class

简介

类声明

字段

构造函数

类方法

继承的方法

java.util.zip - DeflaterOutputStream Class

简介

类声明

字段

构造函数

类方法

继承的方法

java.util.zip - GZIPInputStream Class

简介

类声明

字段

构造函数

类方法

继承的方法

java.util.zip - GZIPOutputStream Class

简介

类声明

字段

构造函数

类方法

继承的方法

java.util.zip - Inflater Class

简介

类声明

构造函数

类方法

继承的方法

java.util.zip - InflaterInputStream Class

简介

类声明

字段

构造函数

类方法

继承的方法

java.util.zip - InflaterOutputStream Class

简介

类声明

字段

构造函数