Write an application that executes two threads. One thread displays “Thread 1” every 1000 milliseconds and other displays “Thread 2” every 3000 milliseconds. Create the threads by extending the Thread class
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Write an application that executes two threads. One thread displays “Thread 1” every 1000 milliseconds and
other displays “Thread 2” every 3000 milliseconds. Create the threads by extending the Thread class
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- Develop a data type for a buffer in a text editor that implements the following API:public class BufferBuffer() create an empty buffervoid insert(char c) insert c at the cursor positionchar delete() delete and return the character at the cursorvoid left(int k) move the cursor k positions to the leftvoid right(int k) move the cursor k positions to the rightint size() number of characters in the bufferAPI for a text bufferHint : Use two stacksExercise 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…The Programming Language is; JAVA Please write comments in each part write a program about a e-shopping order menu. While doing this use OOP concepts. Implement a stocking program using threads. You have an e-store and customer side. In the frame: Number of Items (TextField): Number of items in the stock.() Create (Button): Creates items and adds them to frame. (Pen, paper, bag,etc.) Good (Button): Agents/Customer’s basket start to number of goods/items.(Customer wants to buy 3 pens) Number of Agents (TextField): How many customers at one time? (You can create an arbitrary maximum number if you explain.I.e maximum 4 customers because,...) Maximum Waiting Time (Text Field): Agents or customer’s basket will wait for some time after booking an item. The waiting time will be a random number between 0 and the number entered in this text field. Waiting times must be different for each agent. When waiting time is up, threads (baskets) will release their hold on items. So If your…
- Lab Activities: Exercise 1: 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". 2) Modify the above thread program so that you implement the interface Runnable. Make the main thread waiting till all other threads finish execution.Which of the following statements are true? a. A condition is associated with a lock. b. To invoke methods on a condition, the lock must be obtained first. c. The signal method on a condition causes the lock for the condition to be released. d. Once you invoke the await method on a condition, the lock is automatically released. Once the condition is right, the thread re-acquires the lock and continues executing.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) {…
- Steps to be followed: Create a class called MyThread that extends the Thread class. Declare an instance variable int limitToStop in the MyThread class. Create a parameterized constructor in the MyThread class that takes an int as a parameter to initialize a limitToStop instance variable. Override the run() method in the MyThread class. In the run() method, put a for-loop that goes from 0 to limitToStop. The block associated with the for-loop should print out only the odd numbers. Call Thread.sleep(1000) after every number you print out in the for-loop you created in the previous step. The Thread.sleep(1000) method throws an InterruptedException , which is a checked exception. Therefore, we need to enclose the Thread.sleep(1000) call in a try block. Also, add a catch block associated with the try that catches the InterruptedException and prints out the exception information using the printStackTrace() method. Create a MyThread variable using the new keyword in the main()…#SumCalculator Class: Create a class named SumCalculator that extends the Thread class. This class calculates the sum of numbers within a provided range. Declare three instance variables: start, end, and sum in the SumCalculator class . start and end are the lower and upper bounds of the range, respectively, while sum stores the sum of the numbers within the range. Create a constructor that takes in two parameters: start and end, and initializes the corresponding instance variables. The sum variable should be initialized to 0. Define the run method to calculate the sum of the numbers within the range. Inside of the run method use a for-loop to iterate over the numbers within the range and add each number to the sum variable. Define the accessor method getSum that returns the value of the sum variable. #Main Class: Create a class named Main that contains the main method, the entry point of the program. Create two objects of the SumCalculator class , with the first…// Program describes two files // tells you which one is newer and which one is larger import java.nio.file.*; import java.nio.file.attribute.*; import java.io.IOException; public class DebugThirteen1 { public static void main(String[] args) { Path file1 = Paths.get("/root/sandbox/DebugDataOne1"); Path file2 = Paths.get("/root/sandbox/DebugDataOne2.txt"); try { BasicFileAttributes attr1 = Files.readAttributes(file1, BasicFileAttributes.class); System.out.println("File: " + file1getFileName()); System.out.println("Creation time " + attr1.creationTime()); System.out.println("Last modified time " + attr1lastModifiedTime()); System.out.println("Size " + attr1.size()); BasicFileAttributes attr2 = Files.readAttributes(file2, BasicFileAttributes.class); System.out.println("\nFile: " + file2.getFileName); System.out.println("Creation time " +…
- in java fx Write a program that launches 1,000 threads. Each thread adds 1 to a variable sum that initially is 0. You need to pass sum by reference to each thread. In order to pass it by reference, define an Integer wrapper object to hold sum. Run the program with and without synchronization to see its effect.Parallel version 1 (Name this file as Q1_PLV1.java): o Repeat the sequential version using two threads along with the main thread. o Each thread creates a list of 25,000 students with randomly generated GPAs, randomly generated Ages, and sequential IDs. o Each of the two threads then calculates the average GPA and AGE (after creating the lists). o The two threads work in parallel. o The main thread waits for the two threads to finish and then calculates and prints the final average GPA and AGE from what is reported by the individual threads. • Parallel version 2 (Name this file as Q1_PLV2.java): o Repeat the Parallel version1 task using five threads (each is working on 10000 students) along with the main thread. To measure the time your computer takes to complete a certain task: • Read and store the current time (t1) before you start the task (e.g., before creating the lists), • After the task (e.g., after calculating the average), read and store the current time (t2). • The…JAVA You are requested to implement a “message buffer and response connector” class using Javaprogramming language. The following figure depicts a message buffer and response connectorclass, followed by detailed operations specifications. The message buffer and response connectorclass has three operations, send(), receive(), and reply().Your program should create two separate threads for testing your implementation, a producerthread, and a consumer thread. The producer thread sends a message having a structure (string,integer) – e.g., (add, 3) or (multiply, 7) - to a consumer thread via a message buffer and responseconnector. The consumer thread encapsulates a SimpleCalculation class that has two operations,add() and “multiply(). You should implement the SimpleCalculation class as well. When theconsumer thread receives a message from the connector, it extracts the message and then callsone of the operations on the SimpleCalculation class, depending on the message. For example,the…