Implement a class that checks whether a given number is a prime number or not using both the Thread class and Runnable interface.
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Implement a class that checks whether a given number is a prime number
or not using both the Thread class and Runnable interface.
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- Write a Java program that implements parallel programming using the Fork/Join framework. Step1- The program should initially generate 15 million random numbers. This should be read into an array of doubles. Step 2- Then it should make use of a method that uses this array to calculate the sum of these doubles. Step 3-This program should make use of the subclasses in the Fork/Join Framework. it must also output the number of processors available. Lastly, Have a clear screenshoot of code in the IDE and a screenshot of the code running.Consider the BadReaderWriter.java program attached with this. The program has three threads, namely, one reader thread and two writer threads, and they all access the same list of numbers. The reader thread reads the list and prints it to the terminal. The writer threads append numbers to the list. At any point in time, if either of the writer threads finds that the list contains n elements, then it appends the number n + 1 to the list. Run this program, examine the output, and identify the problems.Fix these problems by implementing the acquireLock() and releaseLock() methods in the code.for some reason I keep getting an error Exception in thread "main" java.lang.Error: Unresolved compilation problem: The method append(char) is undefined for the type StringBuilder at StringBuilder.main(StringBuilder.java:19)
- Explain why synchronization is necessary in the following situation:You have modeled a bank as an array of BankAccountobjects. Each BankAccount object has an associated thread, which transfers money from this bank account to another, randomly selected bank account in the same bank. The amount to transfer is the same for all transactions. The threads work in parallel.Arrays in Java are objects that use reference semantics. Explain what this means and How it affects modification of arrays. You must start a thread before you can read and reply to other threadsWrite 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.
- 2) Suppose you have a linked list class that provides the following methods: // constructor. // returns size of the list. LinkList () int size (); void insertHead (Object data) // insert new data at the head of // the list. // remove and return the Object at // the head of the list. Object removeHead () void insertTail (Object data) // insert new data at the tail of // the list. The class below is an implementation of a stack using the linked list class. Fill in the method implementations: class Stack { private Stack s; public Stack () { public void push (Object x) { } public Object pop () // assume stack is not empty { } public boolean isEmpty() { }Use stacks from the STL to implement a video game library functionality. In this implementation, consider a VideoGame class with title, release year, genre and publisher as variables. Provide setters and getters to these variables. In main, create a stack of video games. Add 5 different game objects into the stack. Then in a loop, for each item that you retrieve from the stack display the game information as follows: TITLEYEARGENREPUBLISHERConsider the below Java code. import public class Semaphore Demo java.util.concurrent.Semaphore; Semaphore binarySema= new Semaphore (1); public static void main (String args[]) { final SemaphoreDemo sema DemoObj= new Semaphore Demo (); Thread td1= new Thread() ( public void run () { } }} } }; Thread td2= new Thread () { @Override public void run () { sema DemoObj.testMutualExclusion (); } sema DemoObj.testMutualExclusion (); tdl.start(); td2.start (); private void testMutualExclusion () { try { binarySema.acquire(); System.out.println (Thread.currentThread().getName()+ "inside the region of mutual exclusive."); Thread.sleep (1000); } catch (InterruptedException e) { ie.printStackTrace(); } finally ( System.out.println (Thread.currentThread().getName() + "outside the region of mutual exclusive."); What would be the output of the program?
- Exercise 1: Write a thread class TabPrinter that prints the elements of an array of integers (in one line) every 2 seconds 5 times. Use the way of extending the class thread. Write the main method which creates and starts three threads Printer which will print different arrays of integers. After that it prints "Main won’t wait. Main exits". Modify the above thread program so that you implement the interface Runnable. Make the main thread waiting till all other threads finish execution. ____________________________________________________________________________________________ Exercise 2: Write a thread class TextThread that prints a text every 1 second 10 times. Read the following main class. Try to guess what will be its output. class Test { public static void main(String s[]) throws Exception { TextThread x = new TextThread ("I am thread x"); TextThread y= new TextThread ("I am thread y"); System.out.println("I am Main thread"); } } Write it and execute it. Is the…Java: In this scenario, one thread is waiting for another thread to finish transfer and vice versa. They are stuck with each other, and the program cannot continue. Thus, deadlock occurs. To avoid deadlock it is necessary to lock accounts in the same order. To fix the program we’ll give each account a unique number so that we can lock accounts in the same order when transferring the money. // // DeadlockAccounts.java // public class DeadlockAccounts { public static void main(String[] args) throws InterruptedException { class Account { int balance = 100; public Account(int balance) { this.balance = balance; } public synchronized void deposit(int amount) { balance += amount; } public synchronized boolean withdraw(int amount) { if (balance >= amount) { balance -= amount; return true; } return false; } public synchronized boolean transfer(Account destination, int amount) { if (balance >= amount) { balance -= amount; synchronized(destination) {…1. Implement, using only the Queue kernel methods, the static method declared as follows and answer the questions below: Reports the smallest integer in the given {@code Queue}. @param q the queue of integer @return the smallest integer in the given queue @requires q /= empty_string @ensures min is in entries (q) and for all x: integer where (x is in entries (q)) (min ivate static int min (Queue q) {...} i. Why do you need the requires clause? ii. Why is the first line of the ensures clause important (min is in entries (q))? Explain what the implementation could do if this line was not included in the postcondition. 2. Implement the static method declared as follows: Reports an array of two {@code int}s with the smallest and the * largest integer in the given {@ code Queue}. * @param q the queue of integer @return an array of two (@code int}s with the smallest and the largest integer in the given queue * @requires q /= empty_string @ensures { minAndMax [0], minAndMax [1] } is subset…