Need help for java! and run completely!

use this code to complete:

import javafx.application.Application;

import javafx.event.ActionEvent;

import javafx.event.EventHandler;

import javafx.scene.Scene;

import javafx.scene.control.Button;

import javafx.scene.layout.StackPane;

import javafx.stage.Stage;

public class HelloWorld extends Application{

public static void main(String[] args)

{

// starts main event loop

launch(args);

}

@Override

public void start(Stage primaryStage)

{

primaryStage.setTitle("Hello World");

Button btn = new Button();

btn.setText("Say 'Hello World'");

btn.setOnAction(new EventHandler ()

{

@Override

public void handle(ActionEvent Event)

{

System.out.println("Hello World");

}

});

StackPane root = new StackPane();

root.getChildren().add(btn);

primaryStage.setScene(new Scene(root, 300, 250));

primaryStage.show();

}

}

thank you!

JavaFX Basics A graphical interface to an application that calculates loan payments presents a good option for a basic JavaFX project. It will present the user with Text Fields for collecting loan data-annual interest rate, tern in years and amount loanedThe application will pass this data into an object of the Loan class that you created in a previous assignment. In addition to loan data, the application will collect income data salary and wages, interest income, investment income and other income. The purpose of collecting income data is to use it for determining a potential borrower's eligibility for a loan of a given amount. The example below shows how this interface should look Clicking "Calc Payment" will do the following: Calculate the potential borrower's total income as the sum of salaries and wages, interest income, investment income and other income . Use an object of the Loan class to store loan data in its attributes and calculate the periodic payment and sum of payments over the life of a loan which has the specified interest rate, term and amount Indicate, by displaying a message in the position shown in the sample, whether the potential borrower is eligible for the loan based on whether the periodic payment divided by one-twelfth of total income (the monthly income) is less than or equal to 25%. If the loan payment is greater than 25% of the monthly income, the potential borrower is not eligible for the loan. Incorporate the actual calculated percent in the message Because the percent used for determining eligibility may change, use a named close to the beginning to represent it. Clicking "Cancel will close the application Sample interface: Salary nd was leterest inome levestment income Other income Total income Annual interest te(nnn Term in years Loan asount Monthly payment Total paments over life of loan Text indicating eligibilty will be displayed here. Use whichever style of implementing Evet Handlers you prefer: the lamba style of EventHandler shown here and demonstrated in LoginFormGrid PaneV3.java: l: or an object of a named EvenHandler class shown here and demonstrated in LoginFormGrid PaneV3: btn setonAction(signonBtnHandler); LoginFormGridPaneV3 formObj null public ClickSignonButton(LoginFormGridPanevV3 formobj this.formObj- formObj public void handle(ActionEvent el formObjset Notifications JavaFX Basics A graphical interface to an application that calculates loan payments presents a good option for a basic JavaFX project. It will present the user with Text Fields for collecting loan data-annual interest rate, tern in years and amount loanedThe application will pass this data into an object of the Loan class that you created in a previous assignment. In addition to loan data, the application will collect income data salary and wages, interest income, investment income and other income. The purpose of collecting income data is to use it for determining a potential borrower's eligibility for a loan of a given amount. The example below shows how this interface should look Clicking "Calc Payment" will do the following: Calculate the potential borrower's total income as the sum of salaries and wages, interest income, investment income and other income . Use an object of the Loan class to store loan data in its attributes and calculate the periodic payment and sum of payments over the life of a loan which has the specified interest rate, term and amount Indicate, by displaying a message in the position shown in the sample, whether the potential borrower is eligible for the loan based on whether the periodic payment divided by one-twelfth of total income (the monthly income) is less than or equal to 25%. If the loan payment is greater than 25% of the monthly income, the potential borrower is not eligible for the loan. Incorporate the actual calculated percent in the message Because the percent used for determining eligibility may change, use a named close to the beginning to represent it. Clicking "Cancel will close the application Sample interface: Salary nd was leterest inome levestment income Other income Total income Annual interest te(nnn Term in years Loan asount Monthly payment Total paments over life of loan Text indicating eligibilty will be displayed here. Use whichever style of implementing Evet Handlers you prefer: the lamba style of EventHandler shown here and demonstrated in LoginFormGrid PaneV3.java: l: or an object of a named EvenHandler class shown here and demonstrated in LoginFormGrid PaneV3: btn setonAction(signonBtnHandler); LoginFormGridPaneV3 formObj null public ClickSignonButton(LoginFormGridPanevV3 formobj this.formObj- formObj public void handle(ActionEvent el formObjset Notifications