getting corresponding filename of image once button pressed

Question

A Set of imagefiles are added to an arraylist(filelist2) of type File.Then an imageview and a button are affffded to a vbox,such vboxes are added to a grids of a gripane using a

Answer 1

I've created a DataButton which can hold some typed data (unlike userData which has the type Object). You can specify a Renderer to render the data on the button or to render an alternative text, eg. in your case: "Download".

Eg. you could use something like this:

List pathlist2 = new ArrayList<>();
...
// provide language specific text for "Download"
ResourceBundle myResourceBundle = ...;
...
DownloadRenderer downloadRenderer = new DownloadRenderer(myResourceBundle);
...
// the dafault renderer would set the text property to path.toString()
DataButton downloadbtn = new DataButton<>(downloadRenderer);
downloadbtn.setData(pathlist2.get(index));
downloadbtn.setOnAction((actionEvent) -> {
            Path path = downloadbtn.getData();
            ...   
     }); 

...

private static class DownloadRenderer extends AbstractDataRenderer