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UI Controls are the graphical elements that allow users to interact with an application or a website. They include buttons, menus, sliders, text fields, checkboxes, radio buttons, and more. In this tutorial, we will explore the different types of UI Controls of JavaFX.
let”s start the discussion by introducing three main aspects of an user interface −
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UI elements − These are the core visual elements which the user eventually sees and interacts with. JavaFX provides a huge list of widely used and common elements varying from basic to complex, which we will cover in this tutorial.
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Layouts − They define how UI elements should be organized on the screen and provide a final look and feel to the GUI (Graphical User Interface). This part will be covered in the Layout chapter.
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Behavior − These are events which occur when the user interacts with UI elements. This part will be covered in the Event Handling chapter.
To create GUI components (controls), JavaFX supports several controls such as date picker, button text field, etc. These controls are represented by different classes of the package javafx.scene.control. We can create a control by instantiating its respective class.
Following is the list of common controls used while designing the GUI in JavaFX.
S.No | Control & Description |
---|---|
1 |
A Label object is a component for placing text. |
2 |
Button This class creates a labeled button. |
3 |
ColorPicker A ColorPicker provides a pane of controls designed to allow a user to manipulate and select a color. |
4 |
A CheckBox is a graphical component that can be in either an on(true) or off (false) state. |
5 |
The RadioButton class is a graphical component, which can either be in a ON (true) or OFF (false) state in a group. |
6 |
A ListView component presents the user with a scrolling list of text items. |
7 |
A TextField object is a text component that allows for the editing of a single line of text. |
8 |
A PasswordField object is a text component specialized for password entry. |
9 |
Scrollbar A Scrollbar control represents a scroll bar component in order to enable user to select from range of values. |
10 |
A FileChooser control represents a dialog window from which the user can select a file. |
11 |
ProgressBar As the task progresses towards completion, the progress bar displays the task”s percentage of completion. |
12 |
A Slider lets the user graphically select a value by sliding a knob within a bounded interval. |
Example
The following program is an example which displays a login page in JavaFX. Here, we are using the controls label, text field, password field and button. Save this code in a file with the name LoginPage.java.
import javafx.application.Application; import javafx.geometry.Insets; import javafx.geometry.Pos; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.control.PasswordField; import javafx.scene.layout.GridPane; import javafx.scene.text.Text; import javafx.scene.control.TextField; import javafx.stage.Stage; public class LoginPage extends Application { @Override public void start(Stage stage) { //creating label email Text text1 = new Text("Email"); //creating label password Text text2 = new Text("Password"); //Creating Text Filed for email TextField textField1 = new TextField(); //Creating Text Filed for password PasswordField textField2 = new PasswordField(); //Creating Buttons Button button1 = new Button("Submit"); Button button2 = new Button("Clear"); //Creating a Grid Pane GridPane gridPane = new GridPane(); //Setting size for the pane gridPane.setMinSize(400, 200); //Setting the padding gridPane.setPadding(new Insets(10, 10, 10, 10)); //Setting the vertical and horizontal gaps between the columns gridPane.setVgap(5); gridPane.setHgap(5); //Setting the Grid alignment gridPane.setAlignment(Pos.CENTER); //Arranging all the nodes in the grid gridPane.add(text1, 0, 0); gridPane.add(textField1, 1, 0); gridPane.add(text2, 0, 1); gridPane.add(textField2, 1, 1); gridPane.add(button1, 0, 2); gridPane.add(button2, 1, 2); gridPane.setStyle("-fx-background-color: BEIGE;"); //Creating a scene object Scene scene = new Scene(gridPane); //Setting title to the Stage stage.setTitle("CSS Example"); //Adding scene to the stage stage.setScene(scene); //Displaying the contents of the stage stage.show(); } public static void main(String args[]){ launch(args); } }
Compile and execute the saved java file from the command prompt using the following commands.
javac --module-path %PATH_TO_FX% --add-modules javafx.controls LoginPage.java java --module-path %PATH_TO_FX% --add-modules javafx.controls LoginPage
Output
On executing, the above program generates a JavaFX window as shown below.
Example
The following program is an example of a registration form, which demonstrates controls in JavaFX such as Date Picker, Radio Button, Toggle Button, Check Box, List View, and Choice List. Save this code in a file with the name Registration.java.
import javafx.application.Application; import javafx.collections.FXCollections; import javafx.collections.ObservableList; import javafx.geometry.Insets; import javafx.geometry.Pos; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.control.CheckBox; import javafx.scene.control.ChoiceBox; import javafx.scene.control.DatePicker; import javafx.scene.control.ListView; import javafx.scene.control.RadioButton; import javafx.scene.layout.GridPane; import javafx.scene.text.Text; import javafx.scene.control.TextField; import javafx.scene.control.ToggleGroup; import javafx.scene.control.ToggleButton; import javafx.stage.Stage; public class Registration extends Application { @Override public void start(Stage stage) { //Label for name Text nameLabel = new Text("Name"); //Text field for name TextField nameText = new TextField(); //Label for date of birth Text dobLabel = new Text("Date of birth"); //date picker to choose date DatePicker datePicker = new DatePicker(); //Label for gender Text genderLabel = new Text("gender"); //Toggle group of radio buttons ToggleGroup groupGender = new ToggleGroup(); RadioButton maleRadio = new RadioButton("male"); maleRadio.setToggleGroup(groupGender); RadioButton femaleRadio = new RadioButton("female"); femaleRadio.setToggleGroup(groupGender); //Label for reservation Text reservationLabel = new Text("Reservation"); //Toggle button for reservation ToggleButton Reservation = new ToggleButton(); ToggleButton yes = new ToggleButton("Yes"); ToggleButton no = new ToggleButton("No"); ToggleGroup groupReservation = new ToggleGroup(); yes.setToggleGroup(groupReservation); no.setToggleGroup(groupReservation); //Label for technologies known Text technologiesLabel = new Text("Technologies Known"); //check box for education CheckBox javaCheckBox = new CheckBox("Java"); javaCheckBox.setIndeterminate(false); //check box for education CheckBox dotnetCheckBox = new CheckBox("DotNet"); javaCheckBox.setIndeterminate(false); //Label for education Text educationLabel = new Text("Educational qualification"); //list View for educational qualification ObservableList<String> names = FXCollections.observableArrayList( "Engineering", "MCA", "MBA", "Graduation", "MTECH", "Mphil", "Phd"); ListView<String> educationListView = new ListView<String>(names); //Label for location Text locationLabel = new Text("location"); //Choice box for location ChoiceBox locationchoiceBox = new ChoiceBox(); locationchoiceBox.getItems().addAll ("Hyderabad", "Chennai", "Delhi", "Mumbai", "Vishakhapatnam"); //Label for register Button buttonRegister = new Button("Register"); //Creating a Grid Pane GridPane gridPane = new GridPane(); //Setting size for the pane gridPane.setMinSize(500, 500); //Setting the padding gridPane.setPadding(new Insets(10, 10, 10, 10)); //Setting the vertical and horizontal gaps between the columns gridPane.setVgap(5); gridPane.setHgap(5); //Setting the Grid alignment gridPane.setAlignment(Pos.CENTER); //Arranging all the nodes in the grid gridPane.add(nameLabel, 0, 0); gridPane.add(nameText, 1, 0); gridPane.add(dobLabel, 0, 1); gridPane.add(datePicker, 1, 1); gridPane.add(genderLabel, 0, 2); gridPane.add(maleRadio, 1, 2); gridPane.add(femaleRadio, 2, 2); gridPane.add(reservationLabel, 0, 3); gridPane.add(yes, 1, 3); gridPane.add(no, 2, 3); gridPane.add(technologiesLabel, 0, 4); gridPane.add(javaCheckBox, 1, 4); gridPane.add(dotnetCheckBox, 2, 4); gridPane.add(educationLabel, 0, 5); gridPane.add(educationListView, 1, 5); gridPane.add(locationLabel, 0, 6); gridPane.add(locationchoiceBox, 1, 6); gridPane.add(buttonRegister, 2, 8); //Styling nodes buttonRegister.setStyle( "-fx-background-color: darkslateblue; -fx-textfill: white;"); nameLabel.setStyle("-fx-font: normal bold 15px ''serif'' "); dobLabel.setStyle("-fx-font: normal bold 15px ''serif'' "); genderLabel.setStyle("-fx-font: normal bold 15px ''serif'' "); reservationLabel.setStyle("-fx-font: normal bold 15px ''serif'' "); technologiesLabel.setStyle("-fx-font: normal bold 15px ''serif'' "); educationLabel.setStyle("-fx-font: normal bold 15px ''serif'' "); locationLabel.setStyle("-fx-font: normal bold 15px ''serif'' "); //Setting the back ground color gridPane.setStyle("-fx-background-color: BEIGE;"); //Creating a scene object Scene scene = new Scene(gridPane); //Setting title to the Stage stage.setTitle("Registration Form"); //Adding scene to the stage stage.setScene(scene); //Displaying the contents of the stage stage.show(); } public static void main(String args[]){ launch(args); } }
Compile and execute the saved java file from the command prompt using the following commands.
javac --module-path %PATH_TO_FX% --add-modules javafx.controls Registration.java java --module-path %PATH_TO_FX% --add-modules javafx.controls Registration
Output
On executing, the above program generates a JavaFX window as shown below.
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