Java建立Zip压缩文件

import java.io.*;

import java.util.zip.*;

class Zip {

public static void main(String args[]) throws IOException {

byte b[] = new byte[512];

ZipOutputStream zout = new ZipOutputStream(System.out);

for(int i = 0; i < args.length; i ++) {

InputStream in = new FileInputStream(args[i]);

ZipEntry e = new ZipEntry(args[i].replace(File.separatorChar,'/'));

zout.putNextEntry(e);

int len=0;

while((len=in.read(b)) != -1) {

zout.write(b,0,len);

}

zout.closeEntry();

print(e);

}

zout.close();

}



public static void print(ZipEntry e){

PrintStream err = System.err;

err.print("added " + e.getName());

if (e.getMethod() == ZipEntry.DEFLATED) {

long size = e.getSize();

if (size > 0) {

long csize = e.getCompressedSize();

long ratio = ((size-csize)*100) / size;

err.println(" (deflated " + ratio + "%)");

}

else {

err.println(" (deflated 0%)");

}

}

else {

err.println(" (stored 0%)");

}

}

}

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