Turtle Hare Race - Multithreading   Use Java multithreading to implement the turtle hare race program. You are not allowed to use Timer events. Your program should have one thread for turtle, one thread for hare, and one dedicated thread for periodic painting.

Design a class called Post. This class models a StackOverflow post. It should have properties for title, description and the date/time it was created. We should be able to up-vote or down-vote a post. We should also be able to see the current vote value. In the main method, create a post, up-vote and down-vote it a few times and then display the the current vote value.

class. The StackUnderflowException class extends the Java Answer:

Java, the user selects an item from the text files ranging 1-15, repeats the loop until 'q'. the program provides a list of what they ordered including discounts, then calculates the total bill and how much they saved. The bottom is my the code I'm working on class BillProcessor {public static void prepareBill(LinkedHashMap<String, Integer> purchases, LinkedHashMap<String,Double>items,LinkedHashMap<String,String> sales, ArrayList<String> itemNames){double totalCost, totalDiscount, actualCost, discount; //note actualCost is the price of a single itemtotalCost = 0.00;totalDiscount = 0.00;actualCost = 0.00;discount = 0.00;for(Map.Entry<String,Integer>set: purchases.entrySet()) {if (sales.get(set.getKey()) != null) {if (sales.get(set.getKey()).equals("bogo") == true) {actualCost = set.getValue() * items.get(set.getKey());totalCost += actualCost;System.out.println("Item Name : " + set.getKey() + "\tItem Quantity(bogo) : " + (set.getValue() * 2 + "\tItem Cost :…

Computer Science Part C: Interactive Driver Program Write an interactive driver program that creates a Course object (you can decide the name and roster/waitlist sizes). Then, use a loop to interactively allow the user to add students, drop students, or view the course. Display the result (success/failure) of each add/drop.

import java.util.Scanner; public class Inventory {   public static void main (String[] args) {      Scanner scnr = new Scanner(System.in);             InventoryNode headNode;                                                    InventoryNode currNode;      InventoryNode lastNode;       String item;      int numberOfItems;      int i;       // Front of nodes list                                                                               headNode = new InventoryNode();      lastNode = headNode;       int input = scnr.nextInt();       for(i = 0; i < input; i++ ) {         item = scnr.next();         numberOfItems = scnr.nextInt();         currNode = new InventoryNode(item, numberOfItems);         currNode.insertAtFront(headNode, currNode);         lastNode = currNode;      }       // Print linked list                                                                         currNode = headNode.getNext();      while (currNode != null) {         currNode.printNodeData();         currNode…

Write all the code within the main method in the TestTruck class below.  Implement the following functionality.  Construct two Truck objects: one with any make and model you choose and the second object with gas tank capacity 10. If an exception occurs, print the stack trace. Print both Truck objects that were constructed.      import java.lang.IllegalArgumentException ;   public class TestTruck {         public static void main( String[] args ) {                    // write your code here

Write a java GUI program stacking Student objects of a class. Your program should have buttons for push, pop, and peek. Create a student class with these fields: name (type: String), age (type : int), major ( type: String), gpa (type: double) and gender (type:char). Use Java Stack class for implementation and use the GUI for user interaction. At run time books stored in stack should follow the last in First out (LIFO) of a stack.

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace LibraryManagment { class Program {// private static int userInput;// need varaible to capture user input = int public static string Title { get; private set; } public static bool IsChecked { get; private set; } //Implement a menu system that allows users to add books, check out books, //and check in books using the console. Use Console.ReadLine() ///to capture user input and Console.WriteLine() for output. static void Main(string[] args) {// provides a cosole interaction for a user while (IsChecked) { Console.WriteLine("\nMenu\n" + "1)Add book\n" + "2)Check Out Book\n" + "3)Check In Book\n" + "4)Exit\n"); Console.Write("Choose your…

Run the program to tell me there is an error, BSTChecker.java:3: error: duplicate class: Node class Node { ^ BSTChecker.java:63: error: class LabProgram is public, should be declared in a file named LabProgram.java public class LabProgram { ^ 2 errors This is my program, please fix it.     import java.util.*; class Node { int key; Node left, right; public Node(int key) { this.key = key; left = right = null; } } class BSTChecker { public static Node checkBSTValidity(Node root) { return checkBSTValidityHelper(root, null, null); } private static Node checkBSTValidityHelper(Node node, Integer min, Integer max) { if (node == null) { return null; } if ((min != null && node.key <= min) || (max != null && node.key >= max)) { return node; } Node leftResult = checkBSTValidityHelper(node.left, min, node.key); if (leftResult != null) { return leftResult; } Node rightResult = checkBSTValidityHelper(node.right, node.key, max); if (rightResult != null) { return rightResult; }…