TextInputDialog允许用户要求输入一个String。
TextInputDialog dialog = new TextInputDialog("42"); dialog.setHeaderText("输入您喜欢的整数。"); dialog.setTitle("Favourite number?"); dialog.setContentText("您最喜欢的int: "); Optional<String> result = dialog.showAndWait(); String s = result.map(r -> { try { Integer n = Integer.valueOf(r); return MessageFormat.format("Nice! I like {0} too!", n); } catch (NumberFormatException ex) { return MessageFormat.format("Unfortunately \"{0}\" 不是int!", r); } }).orElse("You really don't want to tell me, huh?"); System.out.println(s);