What changes that I should do to make the code output the last name instead of the first.

JAVA

The Main Class:

import javafx.application.Application;

import javafx.stage.Stage;

import javafx.scene.Scene;

public class Main extends Application{

public void start(Stage primaryStage) {

Scene scene=new Scene(new Practice19(), 300, 150);

primaryStage.setTitle("Find your first name");

primaryStage.setScene(scene);

primaryStage.show();

}

public static void main(String[]args) {

launch(args);

}

}

The Operation Class:

import javafx.event.ActionEvent;

import javafx.event.EventHandler;

import javafx.geometry.HPos;

import javafx.geometry.Pos;

import javafx.scene.control.Label;

import javafx.scene.control.TextField;

import javafx.scene.control.Button;

import javafx.scene.control.RadioButton;

import javafx.scene.image.Image;

import javafx.scene.image.ImageView;

import javafx.scene.layout.GridPane;

import javafx.scene.text.*;

public class Practice19 extends GridPane {

private Label result;

private TextField name;

private int count=0;

private Text countText;

public Practice19() {

Font font=new Font(20);

Label inputLabel=new Label("FULL NAME");

inputLabel.setFont(font);

GridPane.setHalignment(inputLabel, HPos.RIGHT);

Label outputLabel=new Label("Last NAME");

outputLabel.setFont(font);

GridPane.setHalignment(outputLabel,HPos.RIGHT);

result=new Label(" ");

result.setFont(font);

GridPane.setHalignment(result, HPos.CENTER);

count=0;

countText=new Text("Pushed: 0");

Button push=new Button("Push Me!");

push.setOnAction(new ButtonHandler());

name=new TextField();

name.setFont(font);

name.setPrefWidth(200);

name.setAlignment(Pos.CENTER);

name.setOnAction(this::processReturn1);

setAlignment(Pos.CENTER);

setHgap(20);

setVgap(20);

setStyle("-fx-background-color:skyblue");

add(inputLabel, 0, 0);

add(name, 1, 0);

add(outputLabel, 0,1);

add(result, 1,1);

add(push,2,0);

add(countText,2,1);

}

public void processReturn1(ActionEvent event) {

String fullName=name.getText();

String firstName=null;

int counter=0;

while(fullName.charAt(counter)!=' ') {

firstName=fullName.substring(0, counter+1);

counter++;

}

result.setText(firstName);

}

private class ButtonHandler implements EventHandler{

public void handle(ActionEvent event) {

count++;

countText.setText("Pushes: "+count);

}

}

}