private File saveSketchInTempFolder() throws IOException { File tempFolder = FileUtils.createTempFolder("arduino_modified_sketch_"); FileUtils.copy(sketch.getFolder(), tempFolder); for (SketchFile file : Stream.of(sketch.getFiles()).filter(SketchFile::isModified).collect(Collectors.toList())) { Files.write( Paths.get(tempFolder.getAbsolutePath(), file.getFileName()), file.getProgram().getBytes()); } return Paths.get(tempFolder.getAbsolutePath(), sketch.getPrimaryFile().getFileName()).toFile(); }