Back to Document

/*
 * Copyright (c) 2011, 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:
 *
 * Redistribution and use in source and binary forms, with or without
 * 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,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package textfieldsample;

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;

public class TextFieldSample extends Application {

    @Override
    public void start(Stage stage) {
        Group root = new Group();
        Scene scene = new Scene(root, 300, 150);
        stage.setScene(scene);
        stage.setTitle("Text Field Sample");

        GridPane grid = new GridPane();
        grid.setPadding(new Insets(10, 10, 10, 10));
        grid.setVgap(5);
        grid.setHgap(5);

        scene.setRoot(grid);

        final TextField name = new TextField();
        name.setPromptText("Enter your first name.");
        name.setPrefColumnCount(10);
        name.getText();
        GridPane.setConstraints(name, 0, 0);
        grid.getChildren().add(name);

        final TextField lastName = new TextField();
        lastName.setPromptText("Enter your last name.");
        GridPane.setConstraints(lastName, 0, 1);
        grid.getChildren().add(lastName);

        final TextField comment = new TextField();
        comment.setPrefColumnCount(15);
        comment.setPromptText("Enter your comment.");
        GridPane.setConstraints(comment, 0, 2);
        grid.getChildren().add(comment);

        Button submit = new Button("Submit");
        GridPane.setConstraints(submit, 1, 0);
        grid.getChildren().add(submit);

        Button clear = new Button("Clear");
        GridPane.setConstraints(clear, 1, 1);
        grid.getChildren().add(clear);

        final Label label = new Label();
        GridPane.setConstraints(label, 0, 3);
        GridPane.setColumnSpan(label, 2);
        grid.getChildren().add(label);

        submit.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent e) {
                if (
                    (comment.getText() != null && !comment.getText().isEmpty())
                ) {
                    label.setText(name.getText() + " " +
                        lastName.getText() + ", "
                        + "thank you for your comment!");
                } else {
                    label.setText("You have not left a comment.");
                }
            }
        });

        clear.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent e) {
                name.clear();
                lastName.clear();
                comment.clear();
                label.setText(null);
            }
        });

        stage.show();
    }

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