JavaFX Tutorial - JavaFX GridPane








The GridPane is usually used to layout entry form with read-only labels on the first column and input fields on the second column.

The GridPane can specify constraints at the row, column, or cell level.

For example, we can set the second column which contains input text fields to resize as the window is being resized.

Example

The following code demonstrates a simple form application using the GridPane layout. It has the following layout. 

+------------------------+
| [label ] [   field   ] |
| [label ] [   field   ] |
|             [ button ] |
+------------------------+

The source code.

import javafx.application.Application;
import javafx.geometry.HPos;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.ColumnConstraints;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.Priority;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
//www .  ja v  a  2  s  . c  om
public class Main extends Application {
  public static void main(String[] args) {
    Application.launch(args);
  }

  @Override
  public void start(Stage primaryStage) {
    BorderPane root = new BorderPane();
    Scene scene = new Scene(root, 380, 150, Color.WHITE);

    GridPane gridpane = new GridPane();
    gridpane.setPadding(new Insets(5));
    gridpane.setHgap(5);
    gridpane.setVgap(5);
    ColumnConstraints column1 = new ColumnConstraints(100);
    ColumnConstraints column2 = new ColumnConstraints(50, 150, 300);
    column2.setHgrow(Priority.ALWAYS);
    gridpane.getColumnConstraints().addAll(column1, column2);

    Label fNameLbl = new Label("First Name");
    TextField fNameFld = new TextField();
    Label lNameLbl = new Label("Last Name");
    TextField lNameFld = new TextField();

    Button saveButt = new Button("Save");

    // First name label
    GridPane.setHalignment(fNameLbl, HPos.RIGHT);
    gridpane.add(fNameLbl, 0, 0);

    // Last name label
    GridPane.setHalignment(lNameLbl, HPos.RIGHT);
    gridpane.add(lNameLbl, 0, 1);

    // First name field
    GridPane.setHalignment(fNameFld, HPos.LEFT);
    gridpane.add(fNameFld, 1, 0);

    // Last name field
    GridPane.setHalignment(lNameFld, HPos.LEFT);
    gridpane.add(lNameFld, 1, 1);

    // Save button
    GridPane.setHalignment(saveButt, HPos.RIGHT);
    gridpane.add(saveButt, 1, 2);

    root.setCenter(gridpane);
    primaryStage.setScene(scene);
    primaryStage.show();
  }
}

The code above generates the following result.

null




Example 2

Login window 

/*//  w  w  w . j  a  v a  2  s.co  m
 * Copyright (c) 2012 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 login;

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.PasswordField;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.HBox;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class Main extends Application {

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

    @Override
    public void start(Stage primaryStage) {
        primaryStage.setTitle("JavaFX Welcome");
        GridPane grid = new GridPane();
        grid.setAlignment(Pos.CENTER);
        grid.setHgap(10);
        grid.setVgap(10);
        grid.setPadding(new Insets(25, 25, 25, 25));

        Text scenetitle = new Text("Welcome");
        scenetitle.setFont(Font.font("Tahoma", FontWeight.NORMAL, 20));
        grid.add(scenetitle, 0, 0, 2, 1);

        Label userName = new Label("User Name:");
        grid.add(userName, 0, 1);

        TextField userTextField = new TextField();
        grid.add(userTextField, 1, 1);

        Label pw = new Label("Password:");
        grid.add(pw, 0, 2);

        PasswordField pwBox = new PasswordField();
        grid.add(pwBox, 1, 2);

        Button btn = new Button("Sign in");
        HBox hbBtn = new HBox(10);
        hbBtn.setAlignment(Pos.BOTTOM_RIGHT);
        hbBtn.getChildren().add(btn);
        grid.add(hbBtn, 1, 4);

        final Text actiontarget = new Text();
        grid.add(actiontarget, 1, 6);

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

            @Override
            public void handle(ActionEvent e) {
                actiontarget.setFill(Color.FIREBRICK);
                actiontarget.setText("Sign in button pressed");
            }
        });

        Scene scene = new Scene(grid, 300, 275);
        primaryStage.setScene(scene);
        primaryStage.show();
    }
}

The code above generates the following result.

null