custom java scala buffer

gistfile1.txt

// this section rewrites the each file byte by byte back to new zip file
while (e.hasMoreElements()) {
  val entryIn = e.nextElement().asInstanceOf[ZipEntry]
  if (!entryIn.getName.equalsIgnoreCase("abc.txt")) {
    zos.putNextEntry(entryIn)
    val is = zipFile.getInputStream(entryIn)
    val buf = Array.ofDim[Byte](10)
    var len: Int = 0
    while ((len = (is.read(buf))) > 0) {
      zos.write(buf, 0, len)
    }
  }