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Rajeev Kumar Singh
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‎.gitignore

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.DS_Store
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.idea
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out
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*.iml

‎HelloWorld/Readme.md

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## JavaFX Hello World Example with Lifecycle Methods
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The Project contains a Simple JavaFX Hello World example with implementation of all the lifecycle methods.
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Compile and run `HelloWorldApplication.java` for running the program.

‎HelloWorld/src/HelloWorldApplication.java

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import javafx.application.Application;
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import javafx.geometry.Pos;
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import javafx.scene.Scene;
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import javafx.scene.control.Label;
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import javafx.stage.Stage;
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public class HelloWorldApplication extends Application {
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@Override
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public void init() throws Exception {
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super.init();
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System.out.println("Inside init() method! Perform necessary initializations here.");
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}
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@Override
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public void start(Stage primaryStage) throws Exception {
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Label label = new Label("Hello World");
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label.setAlignment(Pos.CENTER);
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Scene scene = new Scene(label, 500, 350);
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primaryStage.setTitle("Hello World Application");
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primaryStage.setScene(scene);
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primaryStage.show();
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}
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@Override
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public void stop() throws Exception {
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super.stop();
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System.out.println("Inside stop() method! Destroy resources. Perform Cleanup.");
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}
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public static void main(String[] args) {
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launch(args);
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}
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}

‎Readme.md

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‎RegistrationForm/Readme.md

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## JavaFX Registration Form Example
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The Project explains how to create a Registration form in JavaFX.
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Compile and run `RegistrationFormApplication.java` for running the program.

‎RegistrationForm/src/RegistrationFormApplication.java

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import javafx.application.Application;
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import javafx.event.ActionEvent;
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import javafx.event.EventHandler;
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import javafx.geometry.HPos;
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import javafx.geometry.Insets;
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import javafx.geometry.Pos;
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import javafx.scene.Scene;
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import javafx.scene.control.*;
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import javafx.scene.layout.*;
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import javafx.scene.text.Font;
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import javafx.scene.text.FontWeight;
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import javafx.stage.Stage;
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import javafx.stage.Window;
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public class RegistrationFormApplication extends Application {
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@Override
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public void start(Stage primaryStage) throws Exception {
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primaryStage.setTitle("Registration Form JavaFX Application");
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// Create the registration form grid pane
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GridPane gridPane = createRegistrationFormPane();
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// Add UI controls to the registration form grid pane
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addUIControls(gridPane);
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// Create a scene with registration form grid pane as the root node
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Scene scene = new Scene(gridPane, 800, 500);
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// Set the scene in primary stage
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primaryStage.setScene(scene);
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primaryStage.show();
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}
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private GridPane createRegistrationFormPane() {
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// Instantiate a new Grid Pane
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GridPane gridPane = new GridPane();
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// Position the pane at the center of the screen, both vertically and horizontally
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gridPane.setAlignment(Pos.CENTER);
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// Set a padding of 20px on each side
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gridPane.setPadding(new Insets(40, 40, 40, 40));
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// Set the horizontal gap between columns
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gridPane.setHgap(10);
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// Set the vertical gap between rows
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gridPane.setVgap(10);
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// Add Column Constraints
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// columnOneConstraints will be applied to all the nodes placed in column one.
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ColumnConstraints columnOneConstraints = new ColumnConstraints(100, 100, Double.MAX_VALUE);
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columnOneConstraints.setHalignment(HPos.RIGHT);
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// columnTwoConstraints will be applied to all the nodes placed in column two.
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ColumnConstraints columnTwoConstrains = new ColumnConstraints(200,200, Double.MAX_VALUE);
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columnTwoConstrains.setHgrow(Priority.ALWAYS);
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gridPane.getColumnConstraints().addAll(columnOneConstraints, columnTwoConstrains);
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return gridPane;
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}
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private void addUIControls(GridPane gridPane) {
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// Add Header
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Label headerLabel = new Label("Registration Form");
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headerLabel.setFont(Font.font("Arial", FontWeight.BOLD, 24));
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gridPane.add(headerLabel, 0,0,2,1);
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GridPane.setHalignment(headerLabel, HPos.CENTER);
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GridPane.setMargin(headerLabel, new Insets(20, 0,20,0));
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// Add Name Label
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Label nameLabel = new Label("Full Name : ");
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gridPane.add(nameLabel, 0,1);
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// Add Name Text Field
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TextField nameField = new TextField();
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nameField.setPrefHeight(40);
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gridPane.add(nameField, 1,1);
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// Add Email Label
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Label emailLabel = new Label("Email ID : ");
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gridPane.add(emailLabel, 0, 2);
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// Add Email Text Field
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TextField emailField = new TextField();
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emailField.setPrefHeight(40);
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gridPane.add(emailField, 1, 2);
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// Add Password Label
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Label passwordLabel = new Label("Password : ");
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gridPane.add(passwordLabel, 0, 3);
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// Add Password Field
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PasswordField passwordField = new PasswordField();
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passwordField.setPrefHeight(40);
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gridPane.add(passwordField, 1, 3);
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// Add Submit Button
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Button submitButton = new Button("Submit");
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submitButton.setPrefHeight(40);
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submitButton.setDefaultButton(true);
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submitButton.setPrefWidth(100);
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gridPane.add(submitButton, 0, 4, 2, 1);
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GridPane.setHalignment(submitButton, HPos.CENTER);
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GridPane.setMargin(submitButton, new Insets(20, 0,20,0));
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submitButton.setOnAction(new EventHandler<ActionEvent>() {
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@Override
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public void handle(ActionEvent event) {
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if(nameField.getText().isEmpty()) {
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showAlert(Alert.AlertType.ERROR, gridPane.getScene().getWindow(), "Form Error!", "Please enter your name");
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return;
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}
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if(emailField.getText().isEmpty()) {
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showAlert(Alert.AlertType.ERROR, gridPane.getScene().getWindow(), "Form Error!", "Please enter your email id");
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return;
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}
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if(passwordField.getText().isEmpty()) {
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showAlert(Alert.AlertType.ERROR, gridPane.getScene().getWindow(), "Form Error!", "Please enter a password");
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return;
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}
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showAlert(Alert.AlertType.CONFIRMATION, gridPane.getScene().getWindow(), "Registration Successful!", "Welcome " + nameField.getText());
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}
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});
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}
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private void showAlert(Alert.AlertType alertType, Window owner, String title, String message) {
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Alert alert = new Alert(alertType);
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alert.setTitle(title);
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alert.setHeaderText(null);
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alert.setContentText(message);
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alert.initOwner(owner);
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alert.show();
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}
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public static void main(String[] args) {
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launch(args);
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}
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}

‎RegistrationFormFXML/Readme.md

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## JavaFX Registration Form example using FXML
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The Project explains how to create a Registration form in JavaFX using FXML.
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Clone the Project, Import it into your favorite IDE and run `RegistrationFormApplication.java` for running the program.
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‎RegistrationFormFXML/src/javafx/example/AlertHelper.java

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package javafx.example;
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import javafx.scene.control.Alert;
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import javafx.stage.Window;
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/**
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* Created by rajeevkumarsingh on 02/05/17.
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*/
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public class AlertHelper {
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public static void showAlert(Alert.AlertType alertType, Window owner, String title, String message) {
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Alert alert = new Alert(alertType);
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alert.setTitle(title);
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alert.setHeaderText(null);
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alert.setContentText(message);
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alert.initOwner(owner);
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alert.show();
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}
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}

‎RegistrationFormFXML/src/javafx/example/RegistrationFormApplication.java

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package javafx.example;
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import javafx.application.Application;
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import javafx.fxml.FXMLLoader;
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import javafx.scene.Parent;
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import javafx.scene.Scene;
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import javafx.stage.Stage;
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public class RegistrationFormApplication extends Application {
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@Override
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public void start(Stage primaryStage) throws Exception{
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Parent root = FXMLLoader.load(getClass().getResource("registration_form.fxml"));
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primaryStage.setTitle("Registration Form Application");
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primaryStage.setScene(new Scene(root, 800, 500));
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primaryStage.show();
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}
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public static void main(String[] args) {
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launch(args);
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}
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}

‎RegistrationFormFXML/src/javafx/example/RegistrationFormController.java

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package javafx.example;
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import javafx.event.ActionEvent;
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import javafx.fxml.FXML;
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import javafx.scene.control.Alert;
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import javafx.scene.control.Button;
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import javafx.scene.control.PasswordField;
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import javafx.scene.control.TextField;
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import javafx.stage.Window;
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public class RegistrationFormController {
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@FXML
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private TextField nameField;
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@FXML
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private TextField emailField;
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@FXML
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private PasswordField passwordField;
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@FXML
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private Button submitButton;
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@FXML
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public void handleSubmitButtonAction(ActionEvent event) {
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Window owner = submitButton.getScene().getWindow();
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if(nameField.getText().isEmpty()) {
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AlertHelper.showAlert(Alert.AlertType.ERROR, owner, "Form Error!", "Please enter your name");
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return;
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}
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if(emailField.getText().isEmpty()) {
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AlertHelper.showAlert(Alert.AlertType.ERROR, owner, "Form Error!", "Please enter your email id");
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return;
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}
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if(passwordField.getText().isEmpty()) {
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AlertHelper.showAlert(Alert.AlertType.ERROR, owner, "Form Error!", "Please enter a password");
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return;
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}
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AlertHelper.showAlert(Alert.AlertType.CONFIRMATION, owner, "Registration Successful!", "Welcome " + nameField.getText());
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}
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}

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