Save file with JavaFX FileChooser

javafx.stage.FileChooser provides support for standard file dialogs. The showSaveDialog(Window ownerWindow) method shows a new file save dialog. The method doesn't return until the displayed file save dialog is dismissed. The return value specifies the file chosen by the user or null if no selection has been made. If the owner window for the file dialog is set, input to all windows in the dialog's

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JavaFXでファイルを保存する場合のサンプル。