DatePicker

前置き

日付をカレンダーから指定できる。意外と便利。

実装

FXDemo.fxml
<?xml version="1.0" encoding="UTF-8"?> <?import javafx.geometry.Insets?> <?import javafx.scene.control.Button?> <?import javafx.scene.control.DatePicker?> <?import javafx.scene.control.Label?> <?import javafx.scene.control.TextArea?> <?import javafx.scene.layout.BorderPane?> <?import javafx.scene.layout.FlowPane?> <BorderPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="500.0" prefWidth="800.0" xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="jp.ne.yonem.FXDemo"> <top> <FlowPane hgap="20.0" BorderPane.alignment="CENTER"> <children> <Label text="支払日" /> <DatePicker fx:id="dpPayment" /> <Button fx:id="btnSelect" mnemonicParsing="false" onAction="#onSelect" text="選択" /> </children> <padding> <Insets bottom="20.0" left="20.0" right="20.0" top="20.0" /> </padding> </FlowPane> </top> <center> <TextArea fx:id="taOutput" editable="false" prefHeight="200.0" prefWidth="200.0" BorderPane.alignment="CENTER" /> </center> </BorderPane>

FXDemo.java
package jp.ne.yonem; import javafx.application.Application; import javafx.fxml.FXML; import javafx.fxml.FXMLLoader; import javafx.fxml.Initializable; import javafx.scene.Scene; import javafx.scene.control.DatePicker; import javafx.scene.control.TextArea; import javafx.scene.layout.BorderPane; import javafx.stage.Stage; import java.io.IOException; import java.net.URL; import java.time.LocalDate; import java.util.ResourceBundle; public class FXDemo extends Application implements Initializable { @FXML DatePicker dpPayment; @FXML TextArea taOutput; @Override public void start(Stage stage) throws IOException { BorderPane pane = FXMLLoader.load(getClass().getResource("FXDemo.fxml")); stage.setScene(new Scene(pane)); stage.setTitle("FXDemo"); stage.show(); } public static void main(String[] args) { launch(args); } @Override public void initialize(URL location, ResourceBundle resources) { dpPayment.setValue(LocalDate.now()); } @FXML private void onSelect() { LocalDate date = dpPayment.getValue(); if (date != null) { taOutput.appendText(String.format("支払日は %s です%n", date.toString())); } } }