SwingのEDT上でMouseInfoに触れば大丈夫かどうかを確認するための簡単なサンプル

MouseInfoSample.java

package mouseinfosample;

import java.awt.MouseInfo;
import java.awt.Point;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.LabelBuilder;
import javafx.stage.Stage;
import javax.swing.SwingUtilities;

public class MouseInfoSample extends Application {

    private Label lblXPos;

    private Label lblYPos;

    public static void main(String[] args) {
        Application.launch(args);
    }

    @Override
    public void start(Stage primaryStage) {
        primaryStage.setTitle("Hello World!");
        Group root = new Group();
        Scene scene = new Scene(root, 300, 250);
        final Button btn = new Button();
        btn.setLayoutX(100);
        btn.setLayoutY(30);
        btn.setText("マウス位置を取得");

        btn.setOnAction(new EventHandler<ActionEvent>() {

            @Override
            public void handle(ActionEvent event) {
                SwingUtilities.invokeLater(new Runnable() {

                    @Override
                    public void run() {
                        final Point info = MouseInfo.getPointerInfo().getLocation();
                        Platform.runLater(new Runnable() {

                            @Override
                            public void run() {
                                lblXPos.setText(Integer.toString(info.x));
                                lblYPos.setText(Integer.toString(info.y));
                            }
                        });
                    }
                });
            }
        });

        final Label lblXTitle = LabelBuilder.create().text("x座標:").layoutX(20).layoutY(60).build();
        final Label lblYTitle = LabelBuilder.create().text("y座標:").layoutX(20).layoutY(90).build();

        lblXPos = LabelBuilder.create().layoutX(100).layoutY(60).build();
        lblYPos = LabelBuilder.create().layoutX(100).layoutY(90).build();

        root.getChildren().addAll(btn, lblXTitle, lblYTitle, lblXPos, lblYPos);
        primaryStage.setScene(scene);
        primaryStage.show();
    }
}