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<code=java>
import java.util.*;
import java.io.*;
import java.util.zip.*;

public class A
{
    public void readWriteZip() throws Throwable
    {
ZipInputStream zin=new ZipInputStream(new BufferedInputStream(new FileInputStream("test.zip")));
ZipOutputStream zout=new ZipOutputStream(new BufferedOutputStream(new FileOutputStream("receive.zip")));
ZipEntry entry;
int data;
String entryName;

while((entry=zin.getNextEntry())!=null)
{
    entryName=entry.getName();
    ZipEntry ze=new ZipEntry(entryName);
    zout.putNextEntry(ze);

    while((data=zin.read())!=-1)
    {
zout.write(data);
    }
    zout.closeEntry();
    zin.closeEntry();
}
zout.close();
zin.close();
    }
    public static void main(String[] args) throws Throwable
    {
long start=System.nanoTime();
A a=new A();
a.readWriteZip();
System.out.println(System.nanoTime()-start);
    }
}
</code>
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