JavaFX – from list to map using java 8

Is it possible to generate hashmaps using streams and collectors?

myList.stream()
.map(Label::new)
.collect(Collectors.toMap(Function.identity(),PasswordField::new))

But it obviously didn't work. I tried other solutions, but failed Do you have any suggestions?

Solution

The passwordfield class has only one default constructor, which means that passwordfield:: new will not work because it is equivalent to (label L) – > New passwordfield (L) Instead, the value mapper should be (label L) – > New passwordfield() or a simple L – > New passwordfield();