ZIP file unzip file demo

 

Some demo here (http://www.example-code.com/java/zip.asp) Make ZIP file ImportJava. Io .*;
ImportJava.util.zip .*;

ClassMakezipfile {
Public staticVoidMain (string [] ARGs ){
If(ARGs. length! = 2 ){
System. Out. println (
"Usage: Java makezipfile [files to be zipped] [filename After Zip]");
Return;
}
Try{
String filename = ARGs [0];
String zipfilename = ARGs [1];
Makezipfile list =NewMakezipfile ();
List. dozip (filename, zipfilename );
}Catch(Exception e ){
E. printstacktrace ();
}
}

PublicVoidDozip (string filename, string zipfilename ){
Try{
Byte[] Buf =NewByte[1024];
Fileinputstream FCM =NewFileinputstream (filename );
FS. Read (BUF, 0, Buf. Length );

CRC32 CRC =NewCRC32 ();
Zipoutputstream S =NewZipoutputstream (
(Outputstream)NewFileoutputstream (zipfilename ));

S. setlevel (6 );

Zipentry entry =NewZipentry (filename );
Entry. setsize ((Long) BUF. Length );
CRC. Reset ();
CRC. Update (BUF );
Entry. setcrc (CRC. getvalue ());
S. putnextentry (entry );
S. Write (BUF, 0, Buf. Length );
S. Finish ();
S. Close ();
}Catch(Exception e ){
E. printstacktrace ();
}
}
}package org.kodejava.example.util.zip;02. 03.import java.util.zip.ZipFile;04.import java.util.zip.ZipEntry;05.import java.util.Enumeration;06.import java.io.*;07. 08.public class ZipFileUnzipDemo {09.public static void main(String[] args) {10.String zipname = "data.zip";11. 12.try {13.ZipFile zipFile = new ZipFile(zipname);14.Enumeration enumeration = zipFile.entries();15. 16.while (enumeration.hasMoreElements()) {17.ZipEntry zipEntry = (ZipEntry) enumeration.nextElement();18.System.out.println("Unzipping: "+ zipEntry.getName());19. 20.BufferedInputStream bis = newBufferedInputStream(zipFile.getInputStream(zipEntry));21. 22.int size;23.byte[] buffer = new byte[2048];24. 25.FileOutputStream fos = newFileOutputStream(zipEntry.getName());26.BufferedOutputStream bos = newBufferedOutputStream(fos, buffer.length);27. 28.while((size = bis.read(buffer, 0, buffer.length)) != -1) {29.bos.write(buffer, 0, size);30.}31. 32.bos.flush();33.bos.close();34.fos.close();35. 36.bis.close();37.}38.} catch (IOException e) {39.e.printStackTrace();40.}41.}42.}