Retriving zip file stored in database into my own filesystem

Hi all, I have a table named tempdb with tempid and zipfile as two column.Currently I am using sybase db.

create table tempdb(tempid int,zipfile image)
i have several zip file stored in this table now I want to retrieve it and put it in an directory in my file system.

PreparedStatement psmt=con.prepareStatement("select * from dbo.temp_blob");

   ResultSet rs=psmt.executeQuery();
    while(rs.next())
       {
           System.out.println("PIID IS "+rs.getInt(1));
           //ByteArrayOutputStream byt = new ByteArrayOutputStream(1024);
           //BufferedInputStream bsstream=new BufferedInputStream(rs.getBinaryStream(2));                  
        Blob  b1=rs.getBlob(2);
           byte[] barray=b1.getBytes(1,(int)b1.length());
           File destinationzip=new File("d://dest.zip");
           if(!destinationzip.exists())
           {
               destinationzip.createNewFile();
           }
           FileOutputStream fout=new FileOutputStream(destinationzip);
           ZipOutputStream zpout=new ZipOutputStream(new BufferedOutputStream(fout));
           zpout.write(barray,0,barray.length);

But this not the right approach please tell the proper way to do it.