con.java

try
{
  this.con = new URL(getCodeBase(), str).openConnection();
  this.con.setDoInput(true);
  this.con.setDoOutput(false);
  this.con.setUseCaches(false);
  this.con.connect();
  ZipInputStream localZipInputStream = new ZipInputStream(this.con.getInputStream());
  while (...)
  {
     localZipInputStream.getNextEntry();
     localZipInputStream.read()
     ...

  }

}