Question 12 A JavaBeans class has the following characteristics except O Has getter and setter methods O Has constructor that can take arguments O Implementing serializable is not mandatory O Can be transported outside of Java's memory Question 13 As a programmer your objective is to synchronize a full sequence of operation. Which of the following is not true to that objective? O Synchronizing part of an operation is less safe Synchronizing part of an operation makes the program slower Synchronizing part of an operation is allowed by array list O Synchronizing part of an operation makes the program cumbersome
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- USING C language In this project you will implement a program that simulates a simple text editor with the undo/redo functionalities allowed. The program will accept statements, one at a time with a maximum of 100 characters per line.There will be some special commands as follows:1. undo: this will undo (i.e., remove) that last entered statement;2. redo: this will redo (i.e., re-add) that last removed statement;3. print: this command will print the entire stored input text;4. save: will save the text to a file called (output.txt);5. quit: will exit the program and save all results to output.txtExecution example:MyCommand > This is a test inputMyCommand > COMP2421 – Data structures & AlgorithmsMyCommand > test1MyCommand > printresult > This is a test inputCOMP2421 – Data structures & Algorithmstest1MyCommand > undoresult > This is a test inputCOMP2421 – Data structures & AlgorithmsMyCommand > redoresult > This is a test inputCOMP2421 – Data…The following code implements a Java Pasta timer that looks like the application below.• Once the start button is pressed the timer will count to two minutes.• The timer can be stopped by pressing stop.• When the timer is finished, it should pop-up an appropriate dialog box that states the timeis up.You are given a partial implementation of program. Fill out the missing code to complete theprogram import javax.swing.*;import java.awt.event.*;import javax.swing.border.*;public class PastaTimerApp extends implements { private JProgressBar progrBar; private JButton startButton, stopButton; private JLabel textLabel; private PastaTimer PastaTimer; public PastaTimerApp() { JPanel p = new JPanel(); p.setLayout(new BoxLayout(p, BoxLayout.Y_AXIS)); p.setBorder(new TitledBorder("Pasta Timer:")); progrBar = new JProgressBar(JProgressBar.HORIZONTAL, 0, 540); textLabel = new JLabel(" 0 Seconds "); p.add(progrBar); p.add(textLabel); // Initialize buttons and add action listeners JPanel controls =…Java programming This problem set will test your knowledge of System I/O, and variable assignment. Your task is to create several different java classes (.java files) that will produce a specific output based on the user input. All input will be given to you either as a command-line argument or typed in from the keyboard. Below you will find directions for each class you need to create. Please make sure that the class name and java file name match the name 1, ContainsAnyCase This program will accept two user inputted values that are strings. The first user input will be a single word the second user input will be a sentence of random words. This program should print "true" if the first word is in the sentence of words regardless of the casing. In other words case is ignored when checking if the word is within the sentence. The last string that this program should print is "true" or "false", nothing else. 2 PrintMathResult Write an application that will wait for three user inputted…
- Mutual Exclusion: Select all of the following statements that are true. The Peterson Algorithm does not rely on the mechanism of busy waiting. The Peterson Algorithm is a purely software-based solution to the mutual exclusion problem. The only way to guarantee the atomicity of operations is to disable interrupts. Mutex Locks are an API offered by operating systems to protect critical sections. In order to enter a critical section protected by Mutex Locks, the release() operation must be executed first. The test_and_set instruction is atomic.IN C++: Semaphores are used to mediate access to computer resources. Your task is to write a program that uses semaphores to simulate mediated access to three computer resources: 5 printers 6 plotters 4 scanners Your program shall: Declare and initialize the semaphores with the appropriate values. Create a routine that loops through a sequence 4 times. In each iteration the process forks a child process.The child process: uses a random number generator (1-3) to determine which resource it will request uses native semaphore function or one that you create to request the appropriate resource Print the process’ PID and the requested resource type Print the process’ PID and the success/failure of the request if the resource is available - sleep for a random time between 1-3 seconds and then release the resource using appropriate the semaphore function if the resource is not available – sleep for a random between 2-4 seconds and repeat the request (go to step ii). Terminate Sleeps…JAVA Which is true regarding how methods work? A. After a method returns, its local variables keep their values, which serve as their initial values the next time the method is called B. A method's local variables are discarded upon a method's return; each new call creates new local variables in memory C. A return address indicates the value returned by the method D. If a method returns a variable, the method stores the variable's value until the method is called again
- Java - When too many recursive calls are made creating more activation records than the allocated program memory can handle, an “out of memory” error occurs. True or False?Arithmetic Exception Arman has a shop where he provides stuff on rent. The whole payment system is computerised. A customer has to enter the item name, item type, cost, and the number of days they have taken the item for rent. The system then tells them the cost per day. But there is a problem with the machine that if the number of days entered is not an integer value then the system would crash. To handle this, Arman decided to upgrade the software and use exception handling in case the customer entered any invalid input it should display " Number of days x is invalid".Write a C++ program to find the item cost per day with the cost for n days given. The arithmetic exception has to be thrown if the n is less than or equal to zero.Strictly adhere to the Object-Oriented specifications given in the problem statement. All class names, member variable names, and function names should be the same as specified in the problem statement.The class Item has the following private data members.…Cannot compile on java the problem is chapter 5, PC #10 page 346 in starting out with java early objects version 6 by Tony Gaddis. I believe that there is a bracket missing in the text on your site as I keep getting a parsing error at the final line of the code on the "Test" program. I have tried to place it where I thought it should belong but that just caused more errors. I will attach the code to this request
- Cannot compile on java the problem is chapter 5, PC #10 page 346 in starting out with java early objects version 6 by Tony Gaddis. I believe that there is a bracket missing in the text on your site as I keep getting a parsing error at the final line of the code on the "Test" program. I have tried to place it where I thought it should belong but that just caused more errors. I will attach the code to this request. I keep getting an error of java 37: error: reached end of file while parsing. The last person said to just place another bracket at the end but that caused more than 20 errors.please use java language for coding java file - should start with your Last Name, Like SmithClubApp, PetrowskiTravelLogApp, for your class short paragraph should include- -description of the java file -what it does? -what is the input data? expected output, samples of bothIn this assignment, you will create a Java program to search recursively for files in a directory.• The program must take two command line parameters. First parameter is the folder to search for. Thesecond parameter is the filename to look for, which may only be a partial name.• If incorrect number of parameters are given, your program should print an error message and show thecorrect format.• Your program must search recursively in the given directory for the files whose name contains the givenfilename. Once a match is found, your program should print the full path of the file, followed by a newline.• You can implement everything in the main class. You need define a recursive method such as:public static search(File sourceFolder, String filename)For each subfolder in sourceFolder, you recursively call the method to search.• A sample run of the program may look like this://The following command line example searches any file with “Assignment” in its name%java FuAssign7.FuAssignment7…