4. Give the class definition of ArrayChecker which has an integer array variable arr. This has 2 methods a. Constructor which take an integer parameter numElements and reads all the numElements from the user using Scanner class into arr. b. public boolean checkConsecutiveValues (int n), which checks whether arr has atleast n consecutive elements with the same values. (it is enough if it returns the first occurrence of n consecutive elements) (Write only the class definition of ArrayChecker) Eg. 1234555 5 10, if n = 4, this has four consecutive 5s, return true 10 12 111 11456666. If n-3, this has 3 consecutive 1s, return true. 10 12 111 11456666. Ifn-7, then return false

I need to have a main method in a Tester class that will: Fill an array of type Vehicle[] of size NUM_VEHICLES with Vehicle objects. You need to generate a random number between 0 and 2. If the number is 0, add a Vehicle to the array. 1, add a Car, 2, add a Boat. The Vehicle/Car/Boat that you add must be initialized with a random efficiency between 0 and 100.0. Do this until you have added NUM_VEHICLES objects to the array How do I write it so that the array generates random numbers 0 through 2 (inclusive) and how would I then correlate those numbers to a different class object?

Provide a different implementation of ChoiceQuestion. Instead of storing the choices in an array list, the addChoice method should add the choice to the question text. For this purpose, an addLine method has been added to the Question class. Use the following files: Question.java /** A question with a text and an answer.*/public class Question{ private String text; private String answer; /** Constructs a question with empty text and empty answer. */ public Question() { text = ""; answer = ""; } /** Sets the answer for this question. @param correctResponse the answer */ public void setAnswer(String correctResponse) { answer = correctResponse; } /** Checks a given response for correctness. @param response the response to check @return true if the response was correct, false otherwise */ public boolean checkAnswer(String response) { return response.equals(answer); } /** Add a line of text to...

Write a call to Arrays static method equals with arguments arrayl and array2.

Test your Baby class by writing a client program which uses an array to storeinformation about 4 babies. That is, each of the four elements of the arraymust store a Baby object If you have an array for baby names and another array for baby ages,then you have missed the point of the exercise and therefore not metthe requirement of this exercise. A Baby class object stores the required information about a Baby. Soeach Baby object will have its own relevant information, and thus eachobject must be stored in one element of the array.The client program should:a. Enter details for each baby (name and age) and thus populate theBaby arrayb. Output the details of each baby from the array (name and age)c. Calculate and display the average age of all babies in the arrayd. Determine whether any two babies in the array are the sameAs the required information for these tasks is stored in the Baby array, youwill need to use a loop to access each array element (and use the dot notationto access the...

Java Problem Create an object of type FitnessExperiment that stores an array ofStepsFitnessTracker, DistanceFitnessTracker, andHeartRateFitnessTracker objects. In the FitnessExperiment class Add to your FitnessExperimentclass a method called getTotalDistance() that calculates the total distance walked by all theobjects stored in your FitnessExperiment. appropriately both values (total number of steps and total distance walked in that experiment) usingthe printExperimentDetails() method. FitnessExperiemnt.java public class FitnessExperiment {FitnessTracker[] fitnessTrackers;public static void main(String[] args) {FitnessTracker[] trackers ={ new StepsFitnessTracker("steps", new Steps(230)),new StepsFitnessTracker("steps2", new Steps(150)),new StepsFitnessTracker("steps2", new Steps(150)),new HeartRateFitnessTracker("hr", new HeartRate(80)),new HeartRateFitnessTracker("hr", new HeartRate(80)),new DistanceFitnessTracker("dist1", new Distance(1000)),new DistanceFitnessTracker("dist2",...

Devise an algorithm that detects whether a given array is sorted into ascending order. Write a Java method thatimplements your algorithm. You can use your method to test whether a sort method has executed correctly. Ensure that your program has a test class

Write a program to test your implementation by reading data related to 50 Car objects and store them in an array ARR of Car. Your program should include:a. A method Search() that takes as parameters an array of Car objects ARR and a Car object C. This method should return true if C is inside ARR, false otherwise. b. A method findCylinders that takes as parameters an array of Car objects ARR and number of cylinder engine N. It should display all the cars that have N cylinder engine.

Use the ArrayList class Add and remove objects from an ArrayList Protect from index errors when removing Practice with input loop Details: This homework is for you to get practice adding and removing objects from an ArrayList. The Voter class was used to create instances of Voters which held their name and a voter identification number as instance variables, and the number of instances created as a static variable. This was the class diagram: The constructor takes a string, passed to the parameter n, which is the name of the voter and which should be assigned to the name instance variable. Every time a new voter is created, the static variable nVoters should be incremented. Also, every time a new voter is created, a new voterID should be constructed by concatenating the string "HI" with the value of nVoters and the length of the name. For example, if the second voter is named "Clark Kent", then the voterID should be "HI210" because 2 is the value of nVoters and 10 is the number...

Please complete the task by yourself only in JAVA with explanation. Don't copy. Thank you. Using quicksort to sort an array of car objects by various criteria. Define a class Car as follows: class Car { public String make; public String model; public int mpg; // Miles per gallon } b) Implement a comparator called CompareCarsByDescendingMPG that can be passed as an argument to the quicksort method from the lecture notes. CompareCarsByDescendingMPG should return a value that will cause quicksort to sort an array of cars in descending order (from largest to smallest) by mpg.