HelloApplication.java

package com.example.umang;

import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.GridPane;
import javafx.scene.text.Text;
import javafx.stage.Stage;

import java.io.IOException;
import java.util.regex.Pattern;

public class HelloApplication extends Application {
    @Override
    public void start(Stage primaryStage) throws IOException {
        GridPane pane = new GridPane();
        pane.setAlignment(Pos.CENTER);
        pane.setHgap(5);
        pane.setVgap(5);
        pane.setStyle("-fx-background-color:rgb(207, 207, 207)");

        //Creating label and text field for First Name
        Label fn = new Label("First Name");
        TextField  fnText = new TextField();
        fnText.setPromptText("Enter First Name");
        pane.add(fn,1,0);
        pane.add(fnText,2,0);

        //Creating label and text field for Middle Name
        Label mn = new Label("Middle Name");
        TextField  mnText = new TextField();
        mnText.setPromptText("Enter Middle Name");
        pane.add(mn,1,1);
        pane.add(mnText,2,1);

        //Creating label and text field for Last Name
        Label ln = new Label("Last Name");
        TextField  lnText = new TextField();
        lnText.setPromptText("Enter Last Name");
        pane.add(ln,1,2);
        pane.add(lnText,2,2);

        //Creating label and text field for Email Address
        Label email = new Label("Email Address");
        TextField  emailText = new TextField();
        emailText.setPromptText("Enter Email Address");
        pane.add(email,1,3);
        pane.add(emailText,2,3);

        //Creating label and text field for Mobile Number
        Label mon = new Label("Mobile Number");
        TextField  monText = new TextField();
        monText.setPromptText("Enter Mobile Number");
        pane.add(mon,1,4);
        pane.add(monText,2,4);

        //Create a ComboBox for DateOfBirth
        Label DOB = new Label("Date Of Birth");
        Label Day = new Label("Day");
        Label Month = new Label("Month");
        Label Year = new Label("Year");
        String [] days = {"1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31"};
        String [] months = {"January","February","March","April","May","June","July","August","September","October","November","December"};
        String [] years = {"1995","1996","1997","1998","1999","2000","2001","2002","2003","2004","2005"};
        ComboBox cBDay = new ComboBox(FXCollections.observableArrayList(days));
        ComboBox cBMonth = new ComboBox(FXCollections.observableArrayList(months));
        ComboBox cBYear = new ComboBox(FXCollections.observableArrayList(years));
        pane.add(DOB,1,5);
        pane.add(Day,1,6);
        pane.add(cBDay,2,6);
        pane.add(Month,1,7);
        pane.add(cBMonth,2,7);
        pane.add(Year,1,8);
        pane.add(cBYear,2,8);

        //Create a Radio Button for Gender
        Label gender = new Label("Gender");
        RadioButton rBMale = new RadioButton("Male");
        RadioButton rBFemale = new RadioButton(("Female"));
        ToggleGroup group = new ToggleGroup();
        rBMale.setToggleGroup(group);
        rBFemale.setToggleGroup(group);
        pane.add(gender,1,9);
        pane.add(rBMale,2,9);
        pane.add(rBFemale,2,10);

        //Create a Language known option by using Checkbox class
        Label language = new Label("Language");
        CheckBox hindi = new CheckBox("Hindi");
        CheckBox gujarati = new CheckBox("Gujarati");
        CheckBox english = new CheckBox("English");
        pane.add(language,1,11);
        pane.add(hindi,2,11);
        pane.add(gujarati,2,12);
        pane.add(english,2,13);

        //Create a submit and cancel button
        Button cancel = new Button("Cancel");
        Button submit = new Button("Submit");
        pane.add(cancel,1,18);
        pane.add(submit,2,18);

        //Create a second scene for when a user submit the data the new scene will appear
        GridPane pane2 = new GridPane();
        Scene scene2 = new Scene(pane2,1000,300);
        pane2.setStyle("-fx-background-color:rgb(207, 207, 207);-fx-font:50px CENTER");
        pane2.setAlignment(Pos.CENTER);

        Label welcomePage = new Label();

        //Creating a setOnAction event that takes place when user click submit button
        submit.setOnAction (e-> {

                    //Validation for first,middle and last names
                    String fml = "[A-Za-z\\s]+";
                    Pattern p = Pattern.compile(fml);
                    boolean a = p.matcher(fnText.getText()).matches();
                    if(!a){
                        Alert alert = new Alert(Alert.AlertType.WARNING);
                        alert.setTitle("Name Warning");
                        alert.setHeaderText(null);
                        alert.setContentText("First name must be character and not be null ");
                        alert.showAndWait();
                    }
                    boolean b = p.matcher(mnText.getText()).matches();
                    if(!b){
                        Alert alert = new Alert(Alert.AlertType.WARNING);
                        alert.setTitle("Name Warning");
                        alert.setHeaderText(null);
                        alert.setContentText("Middle name must be character and not be null");
                        alert.showAndWait();
                    }
                    boolean c = p.matcher(lnText.getText()).matches();
                    if(!c){
                        Alert alert = new Alert(Alert.AlertType.WARNING);
                        alert.setTitle("Name Warning");
                        alert.setHeaderText(null);
                        alert.setContentText("Last name must be character and not be null");
                        alert.showAndWait();
                    }

                    //Validation for email address
                    String emailRegex = "^[a-zA-Z0-9_+&*-]+(?:\\." + "[a-zA-Z0-9_+&*-]+)*@" + "(?:[a-zA-Z0-9-]+\\.)+[a-zA-Z]{2,7}$";
                    Pattern emailPattern = Pattern.compile(emailRegex);
                    boolean emailChecker = emailPattern.matcher(emailText.getText()).matches();
                    if(!emailChecker){
                        Alert alert = new Alert(Alert.AlertType.WARNING);
                        alert.setTitle("Email Warning");
                        alert.setHeaderText(null);
                        alert.setContentText("Please Enter Valid Email Address");
                        alert.showAndWait();
                    }

                    //Validation for mobile number
                    String numberRegex = "[6-9][0-9]{9}";
                    Pattern numberPattern = Pattern.compile(numberRegex);
                    boolean numberChecker = numberPattern.matcher(monText.getText()).matches();
                    if(!numberChecker){
                        Alert alert = new Alert(Alert.AlertType.WARNING);
                        alert.setTitle("Number Warning");
                        alert.setHeaderText(null);
                        alert.setContentText("Please Enter Valid Mobile Number with limit in 10 digits");
                        alert.showAndWait();
                    }

                    //validation for ComboBox
                    boolean d = cBDay.getSelectionModel().isEmpty();
                    if(d){
                        Alert alert = new Alert(Alert.AlertType.WARNING);
                        alert.setTitle("DOB Warning");
                        alert.setHeaderText(null);
                        alert.setContentText("Select the Day");
                        alert.showAndWait();
                    }
                    boolean m = cBMonth.getSelectionModel().isEmpty();
                    if(m){
                        Alert alert = new Alert(Alert.AlertType.WARNING);
                        alert.setTitle("DOB Warning");
                        alert.setHeaderText(null);
                        alert.setContentText("Select the Month");
                        alert.showAndWait();
                    }
                    boolean y = cBYear.getSelectionModel().isEmpty();
                    if(y) {
                        Alert alert = new Alert(Alert.AlertType.WARNING);
                        alert.setTitle("DOB Warning");
                        alert.setHeaderText(null);
                        alert.setContentText("Select the Year");
                        alert.showAndWait();
                    }

                    //Validation for RadioButton
                    boolean mf = ((rBMale.isSelected() | rBFemale.isSelected()));
                    if(!mf){
                        Alert alert = new Alert(Alert.AlertType.WARNING);
                        alert.setTitle("Validate Fields");
                        alert.setHeaderText(null);
                        alert.setContentText("Select one of the gender");
                        alert.showAndWait();
                    }

                    //Validation for CheckBox
                    boolean hge =  (hindi.isSelected() | gujarati.isSelected() | english.isSelected() );
                    if(!hge) {
                        Alert alert = new Alert(Alert.AlertType.WARNING);
                        alert.setTitle("Validate Fields");
                        alert.setHeaderText(null);
                        alert.setContentText("Select one of the language");
                        alert.showAndWait();
                    }

                    //If all the content of registration form are valid , we show a welcome screen
                    if(a && b && c && !d && !m && !y && mf && hge && emailChecker && numberChecker ){
                        primaryStage.setScene(scene2);
                        String name = fnText.getText() + " " + lnText.getText();
                        welcomePage.setText("Welcome " + name + " !");
                        pane2.add(welcomePage,1,1);
                    }

                });

        //Creating a setOnAction event that takes place when user click cancel button
        //It will clear the input which are in the form
        cancel.setOnAction(e-> {
            fnText.clear();
            mnText.clear();
            lnText.clear();
            emailText.clear();
            monText.clear();
            cBDay.getSelectionModel().clearSelection();
            cBMonth.getSelectionModel().clearSelection();
            cBYear.getSelectionModel().clearSelection();
            rBMale.setSelected(false);
            rBFemale.setSelected(false);
            hindi.setSelected(false);
            gujarati.setSelected(false);
            english.setSelected(false);
        });

        //Setting the first scene
        Scene scene1 = new Scene(pane, 400, 450);

        primaryStage.setTitle("RegistrationForm");
        primaryStage.setScene(scene1);
        primaryStage.show();
    }

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