UI Control Sample | JavaFX Tutorials and Documentation

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/*
 * Copyright (c) 2013 Oracle and/or its affiliates.
 * All rights reserved. Use is subject to license terms.
 *
 * This file is available and licensed under the following license:
 *
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 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in
 * the documentation and/or other materials provided with the distribution.
 * - Neither the name of Oracle nor the names of its
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package filechoosersample;
import java.awt.Desktop;
import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.Pane;
import javafx.scene.layout.VBox;
import javafx.stage.FileChooser;
import javafx.stage.Stage;
public final class FileChooserSample extends Application {
 private Desktop desktop = Desktop.getDesktop();
 @Override
 public void start(final Stage stage) {
 stage.setTitle("File Chooser Sample");
 final FileChooser fileChooser = new FileChooser();
 final Button openButton = new Button("Open a Picture...");
 final Button openMultipleButton = new Button("Open Pictures..."); 
 openButton.setOnAction(new EventHandler<ActionEvent>() {
 @Override
 public void handle(ActionEvent e) {
 configureFileChooser(fileChooser);
 File file = fileChooser.showOpenDialog(stage);
 if (file != null) {
 openFile(file);
 }
 }
 });
 openMultipleButton.setOnAction(new EventHandler<ActionEvent>() {
 @Override
 public void handle(ActionEvent e) {
 configureFileChooser(fileChooser); 
 List<File> list = 
 fileChooser.showOpenMultipleDialog(stage);
 if (list != null) {
 for (File file : list) {
 openFile(file);
 }
 }
 }
 });
 final GridPane inputGridPane = new GridPane();
 GridPane.setConstraints(openButton, 0, 1);
 GridPane.setConstraints(openMultipleButton, 1, 1);
 inputGridPane.setHgap(6);
 inputGridPane.setVgap(6);
 inputGridPane.getChildren().addAll(openButton, openMultipleButton);
 
 final Pane rootGroup = new VBox(12);
 rootGroup.getChildren().addAll(inputGridPane);
 rootGroup.setPadding(new Insets(12, 12, 12, 12));
 stage.setScene(new Scene(rootGroup));
 stage.show();
 }
 public static void main(String[] args) {
 Application.launch(args);
 }
 private static void configureFileChooser(
 final FileChooser fileChooser) { 
 fileChooser.setTitle("View Pictures");
 fileChooser.setInitialDirectory(
 new File(System.getProperty("user.home"))
 ); 
 fileChooser.getExtensionFilters().addAll(
 new FileChooser.ExtensionFilter("All Images", "*.*"),
 new FileChooser.ExtensionFilter("JPG", "*.jpg"),
 new FileChooser.ExtensionFilter("PNG", "*.png")
 );
 }
 private void openFile(File file) {
 try {
 desktop.open(file);
 } catch (IOException ex) {
 Logger.getLogger(FileChooserSample.class.getName()).log(
 Level.SEVERE, null, ex
 );
 }
 }
}