ciferkey

// Note this method uses Consumer rather than Function since it only mutates the notebook and does not return anything.  
public Workbook workbook(Consumer<Workbook> block) {
      Workbook wb = new HSSFWorkbook();
      block.accept(wb);
      return wb;
  }

// We can call the method like this:
public void tryItOut() {
  workbook((Workbook wb) -> {

ciferkey

fun Sheet.merge(firstRow: Int, lastRow: Int,firstCol: Int, lastCol: Int) {
    addMergedRegion(CellRangeAddress(firstRow, lastRow, firstCol, lastCol))
}


sheet.merge(
        1, //first row (0-based)
        1, //last row  (0-based)
        1, //first column (0-based)
        2  //last column  (0-based)

ciferkey

sheet.addMergedRegion(new CellRangeAddress(
            1, //first row (0-based)
            1, //last row  (0-based)
            1, //first column (0-based)
            2  //last column  (0-based)
));

ciferkey

val wb = workbook {
  sheet("new sheet") {
    row(2) {
      cell(1.1)
      cell(date1)
      cell(calendar1)
      cell("a string")
      cell(true)
      cell(5) {
        cellType = ERROR

ciferkey

Workbook wb = new HSSFWorkbook();
Sheet sheet = wb.createSheet("new sheet");
Row row = sheet.createRow(2);
row.createCell(0).setCellValue(1.1);
row.createCell(1).setCellValue(date1);
row.createCell(2).setCellValue(calendar1);
row.createCell(3).setCellValue("a string");
row.createCell(4).setCellValue(true);
row.createCell(5).setCellType(CellType.ERROR);

ciferkey

 {
  "title": "Introduction to Spring Reactor",
  "thumbnailUrl": "/wp-content/themes/baeldung/icon/logo.svg",
  "description": "The canonical reference for building a production grade API with Spring."
}

ciferkey

class UrlHandler(private val urlDecoder: URLDecoder) {
    val charSet = StandardCharsets.UTF_8.toString()

    val client = WebClient.create("")

    fun unfurl(request: ServerRequest): Mono<ServerResponse> {
        val url = URLDecoder.decode(request.pathVariable("url"), charSet)

        val response = client.get().uri(url).retrieve().bodyToMono(String::class.java)
                .map {

ciferkey

fun routes(urlHandler: UrlHandler) = router {
    GET("/unfurl/{url}", urlHandler::unfurl)
}

ciferkey

val app = application {
	bean<UrlHandler>()
	bean<URLDecoder>()
	logging {
		level(LogLevel.INFO)
		logback {
			consoleAppender()
		}
	}
	webflux {

ciferkey

fun CharIterator.readWhile(predicate: (Char) -> Boolean): Result<String, Exception> {
    return Result.of<String, Exception> {
        val readString = StringBuilder()
        while (predicate.invoke(this.peek())) {
            readString.append(this.next())
        }
        readString.toString()
    }.mapError {
        DecodeException("Failed reading based on given predicate", it)
    }