Can someone show me how to make this javaFx code work?

The submit button should remain disabled until:
● There is text in all three fields.
● The two password fields have the same value.
When Submit is clicked, display an Alert that says “Account
Created!”
When Quit is clicked, display an Alert that asks the user if
they are sure they want to quit. If they click OK, quit the
program with System.exit(0). If they click Cancel, the
program keeps running.

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.Event;
import javafx.event.EventHandler;
import javafx.fxml.FXMLLoader;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;
import javafx.scene.layout.GridPane;
import javafx.scene.control.Alert.AlertType;

import java.util.Optional;

public class Main extends Application {

    @Override
    public void start(Stage primaryStage) throws Exception {

        Button SubmitHandler = new Button("Submit");
        Button Quit = new Button("Quit");

        Label title = new Label("Create an Account");
        Label label1 = new Label("User Name");
        Label label2 = new Label("Password");
        Label label3 = new Label("Re-enter Password");

        TextField userName = new TextField();
        PasswordField passWord = new PasswordField();
        PasswordField rePassWord = new PasswordField();

        HBox hBox1 = new HBox(title);
        HBox hBox2 = new HBox(51, label1, userName);
        HBox hBox3 = new HBox(60, label2, passWord);
        HBox hBox4 = new HBox(10, label3, rePassWord);
        HBox hBox5 = new HBox(55, SubmitHandler, Quit);

        hBox1.setAlignment(Pos.CENTER);
        hBox2.setAlignment(Pos.BASELINE_RIGHT);
        hBox3.setAlignment(Pos.BASELINE_RIGHT);
        hBox4.setAlignment(Pos.CENTER);
        hBox5.setAlignment(Pos.BASELINE_LEFT);

        hBox1.setPadding(new Insets(10, 10, 10, 10));
        hBox2.setPadding(new Insets(10, 10, 10, 10));
        hBox3.setPadding(new Insets(10, 10, 10, 10));
        hBox4.setPadding(new Insets(10, 10, 10, 10));
        hBox5.setPadding(new Insets(10, 10, 10, 10));

        GridPane gridPane = new GridPane();
        gridPane.add(hBox1, 0, 0);
        gridPane.add(hBox2, 0, 1);
        gridPane.add(hBox3, 0, 2);
        gridPane.add(hBox4, 0, 3);
        gridPane.add(hBox5, 0, 4);


        Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
        primaryStage.setTitle("In class 6");
        primaryStage.setScene(new Scene(gridPane));
        primaryStage.show();


    }

    private EventHandler<ActionEvent> QuitHandler = event -> {
        Alert quitAlert = new Alert(AlertType.CONFIRMATION);
        quitAlert.setTitle("");
        quitAlert.getButtonTypes().add(ButtonType.NO);
        quitAlert.setHeaderText("Save Before Quitting?");
        Optional<ButtonType> result = quitAlert.showAndWait();

        if (result.isPresent() && result.get() == ButtonType.OK)
            System.exit(0);
        if (result.isPresent() && result.get() == ButtonType.NO)
            System.exit(0);
    };

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

Find the largest number of divisions made by Euclid’s algorithm for computing gcd(m, n) for 1≤ n ≤ m ≤ 100.

Function named FunCount takes three arguments-

C, an integer representing the count of elements in input list

IP- input list of positive integers.

Item- an integer value.

Function FunCount returns an integer representing the count of all the elements of List that are equal to
the given integer value Key.

Example: Don’t take these values in program, take all inputs from user

C = 9, IP= [1,1,4,2,2,3,4,1,2], Item = 2
function will return 3

Question 1:  Windows’ Ping sends four echo requests (i.e., four ping requests) to a target by default. Based on what you did in Activity 1 of Lab 4 and/or some of the information available in the Appendix of the Lab 4 assignment (i.e., the last pages in the Lab 4 assignment), which of the following is the appropriate command for pinging target 172.217.4.36 by sending 4 echo requests without changing any of the default pinging options?

1. ping –l 4 172.217.4.36
2. ping –r 4 172.217.4.36
3. ping 172.217.4.36
4. None of the above

Question 2:  Based on what you did in Activity 1 of Lab 4 and/or some of the information available in the Appendix of the Lab 4 assignment (i.e., the last pages in the Lab 4 assignment), which of the following commands can you use to ping the target 172.217.4.36 repeatedly until you stop the pinging yourself?

1. ping –r 4 172.217.4.36
2. ping –repeat 4 172.217.4.36
3. ping –t 172.217.4.36
4. None of the above

Question 3: You start pinging with the option of repeatedly pinging a target. Based on what you did in Activity 1 of Lab 4 and/or some of the information available in the Appendix of the Lab 4 assignment (i.e., the last pages in the Lab 4 assignment), which of the following can you use to stop the pinging?

1. Press the Esc key on the keyboard
2. Press Shift-Esc
3. Type Quit
4. Type Stop
5. None of the above

Question 4: Using _______________________, you will ping sweep 5 targets.

1. fping -g 172.217.4.36 172.217.4.40
2. fping -g 172.217.4.36-40
3. fping -g 172.217.4.36-5
4. All of the above

Question 5: The following is not a valid Fping command.
                       Note: This question is about the Fping utility.

1. fping -g 172.217.4.3 172.217.4.10
2. fping -g 192.168.1.0/24
3. fping -g 139.67.8.128-130
4. None of the above

Add a CountGroups method to the linked list class below (OurList). It returns the number of groups of a value from the list. The value is passed into the method. A group is one or more values.

Examples using strings:
A list contains the following strings: one, one, dog, dog, one, one, one, dog, dog, dog, dog, one, one, dog, one
   CountGroup(“one”) prints 4 groups of one's
   CountGroup(“dog”) prints 3 groups of dog's

Do not turn in the code below. Turn in only your method.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace LinkListExample
{
    public class OurList<T>
    {
        private class Node
        {
            public T Data { get; set; }
            public Node Next { get; set; }
            public Node(T paramData = default(T), Node paramNext = null)
            {
                this.Data = paramData;
                this.Next = paramNext;
            }
        }

        private Node first;

        public OurList()
        {
            first = null;
        }

        public void Clear()     // shown in class notes
        {
            first = null;
        }

        public void AddFirst(T data)     // shown in class notes
        {
            this.first = new Node(data, this.first);
        }

        public void RemoveFirst()     // shown in class notes
        {
            if (first != null)
                first = first.Next;
        }

        public void AddLast(T data)     // shown in class notes
        {
            if (first == null)
                AddFirst(data);
            else
            {
                Node pTmp = first;
                while (pTmp.Next != null)
                    pTmp = pTmp.Next;

                pTmp.Next = new Node(data, null);
            }
        }

        public void RemoveLast()     // shown in class notes
        {
            if (first == null)
                return;
            else if (first.Next == null)
                RemoveFirst();
            else
            {
                Node pTmp = first;
                while (pTmp.Next != null && pTmp.Next.Next != null)
                    pTmp = pTmp.Next;

                pTmp.Next = null;
            }
        }

        public void Display()     // shown in class notes
        {
            Node pTmp = first;
            while (pTmp != null)
            {
                Console.Write("{0}, ", pTmp.Data);
                pTmp = pTmp.Next;
            }
            Console.WriteLine();
        }

        public bool IsEmpty()     // shown in class notes
        {
            if (first == null)
                return true;
            else
                return false;
        }
     }
}

Python 3.7:

1. Write a generator expression that repeats each character in a given string 4 times. i.e. given “gone”, every time you call the next method on the generator expression it will display “gggg”, then “oooo”, … etc and instantiate it to an object called G.  G = (…..) # generatorExpression object

2. Test and verify that iter(G) and G are the same things. What does this tell you about the nature of a Generator object/expression?

3. Assign Iter(G) to an iterator object called it1 and advance it to the next element by using next method.

4. Instantiate a new Iter(G) object called it2. Use the next method and advance it to the next element. Observe the result and compare it with the results of it1.

5. Does the new Iter(G) object start the iterator from the start of the string object? Write down your understanding/conclusion from this experiment.

6. How can you get back the Iter(G) to point back to the beginning of the string?

Write a java program creating an array of the numbers 1 through 10. Shuffle those numbers.

Randomly pick a number between one and ten and then sequentially search the array for that number.

Once the number is found, place that number at the top of the list.

Print the list. Perform #3 thru #5 ten times.

A. What can happen if pointer is uninitialized. Explain the concept and what should ideally be done
in such case

B. Memory was allocated initially for 5 elements, later on two more elements added to list. How can
space be managed in such case. Implement the scenario in C.

• What are some Linux Server operating system failover technologies? What about premium ones that you can pay for?
• What are some Windows Server operating system failover technologies? What about premium ones that you can pay for?
• Discuss the process for failover for both subjects you chose!

Consider the following three tables, primary and foreign keys.

Table Name        SalesPeople

Attribute Name                                Type                                      Key Type

EmployeeNumber             Number                               Primary Key

Name                                   Character

JobTitle                                  Character           

Address                                 Character

PhoneNumber                     Character

YearsInPosition                             Number

Table Name        ProductDescription

Attribute Name                                Type                                      Key Type

                ProductNumber                Number                               Primary Key

                ProductName                  Character           

                ProductPrice                   Number

Table Name        SalesOrder

Attribute Name                                Type                                      Key Type

                SalesOrderNumber        Number                               Primary Key

                ProductNumber               Number                               Foreign Key

                EmployeeNumber           Number                               Foreign Key

                SalesOrderDate                Date

Assume that you draw up a new sales order for each product sold.

Develop the following queries in SQL:

a.       All the Sales People with less than four years in position.

b.      All the Product Names sold on April 4^th.

c.       All the Products sold by Sales People less than 3 years in the position.

The program is not asking y/n :look below

Enter your grade:0.00
F
Continue (y/n)y
Enter your grade:3.33
B+
Enter your grade:
--------------------------------------------

def calci():
    grade = float(input("Enter your grade:"))
    while (grade <= 4):
        if (grade >= 0.00 and grade <= 0.67):
            print("F")
            break
        elif (grade >= 0.67 and grade <= 0.99):
            print("D-")
            break
        elif (grade >= 1.00 and grade <= 1.32):
            print("D")
            break
        elif (grade >= 1.33 and grade <= 1.66):
            print("D+")
            break
        elif (grade >= 1.67 and grade <= 1.99):
            print("C-")
            break
        elif (grade >= 2.00 and grade <= 2.32):
            print("C")
            break
        elif (grade >= 2.33 and grade <= 2.66):
            print("C+")
        elif (grade >= 2.67 and grade <= 2.99):
            print("B-")
            break
        elif (grade >= 3.00 and grade <= 3.32):
            print("B")
            break
        elif (grade >= 3.33 and grade <= 3.66):
            print("B+")
        elif (grade >= 3.67 and grade <= 3.99):
            print("A-")
            break
        elif (grade == 4.00):
            print("A")
            break
        elif (grade == 4.00):
            print("A+")
        else:
            print("Invalid input enter FLOAT only")
        calci()


def main2():
    question = input("Continue (y/n)")
    if question == "n" or question == "N":
        print("Bye")
    elif question == "y" or question == "Y":
        calci()
        main2()
    else:
        print("Invalid Input-Enter either y or n")
        main2()


print("ISQA 4900 quiz")
calci()
main2()
 fix the error

(Programming Language: Python)

It's trivial that the value of a number remains the same no matter how many zeros precede it. However, adding the zeros at the end of the number increases the value * 10. Jasmine is tired of seeing \001/100" on her tests (well yes, no one really writes 001, but Jasmine's teacher finds it funny to do so). So, she managed to login to her teacher's computer and now wants to design a function that can move the 0's in her grade to the end before her teacher uploads her grades. Although we don't agree with Jasmine's tactics, Krish (Jasmine's mentor) told us to help her out by finishing the `move zeros' function. This function should move all the 0's in the given list to the end while preserving the order of the other elements.

Remember that this function needs to modify the list, not return a new list!

---------------------------------------------

def move_zeros(lst: List[int]) -> None:

"""

Move all the 0's in lst to the END of the lst *in-place*, i.e. *modify* the list, DONT return a new list

>>> lst = [1, 0, 2, 3]

>>> move_zeros(lst)

>>> lst [1, 2, 3, 0]

"""

pass

Explain the bit-plain slicing ? Subject is digital image processing