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POScala - factoring out constructors
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copied!<p>i seem to have a relatively simple problem: I do have some code that downloads a file from http and performs an unzip operation. these 2 codes seem pretty similar:</p> <pre><code> def downloadFile(url: URL, filename: String) { var out: OutputStream = null var in: InputStream = null try { val outPutFile = new File(filename) if (outPutFile.exists()) { outPutFile.delete() } val uc = url.openConnection() val connection = uc.asInstanceOf[HttpURLConnection] connection.setRequestMethod("GET") in = connection.getInputStream() out = new BufferedOutputStream(new FileOutputStream(filename)) copy(in, out) } catch { case e: Exception => println(e.printStackTrace()) } out.close() in.close() } def unzipFile(file: File): String = { var out: OutputStream = null val outputFileName = "uncompressed" + file.getName() println("trying to acess " + file.getName() + file.getAbsoluteFile()) val in = new BZip2CompressorInputStream(new FileInputStream(file)) val outfile = new File(outputFileName) if (outfile.exists()) { outfile.delete() } out = new FileOutputStream(outputFileName) copy(in, out) in.close() out.close() return outputFileName } def copy(in: InputStream, out: OutputStream) { val buffer: Array[Byte] = new Array[Byte](1024) var sum: Int = 0 Iterator.continually(in.read(buffer)).takeWhile(_ != -1).foreach({ n => out.write(buffer, 0, n); (sum += buffer.length); println(sum + " written to output "); }) } </code></pre> <p>is there a way to rewrite the download / unzip method into one method and to factor out the constrcutors to achieve a dependency - injection like behavior?</p>

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