Determine if the following statement are true or false Screen shot shows the text's arraycollection When comparing two objects using the == operator, what is actually compared is the contents of the objects.
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Determine if the following statement are true or false
Screen shot shows the text's arraycollection
When comparing two objects using the == operator, what is actually compared is the contents of the objects.
The equals method of the Object class returns true only if the two objects being compared have identical attributes.
A collection allows retrieval of information based on the size of the information.
With the text's array-based collection implementation, the set of stored elements is scattered about the array.
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- Java Programming Class Car Attributes (all private): vin: String (5 digits) make: String model: String year: int price: double Methods: Parameterized constructor for initializing a new Car instance Getters for all attributes toString method to display a Car's attributes Executable Class Create an array of at least ten Car objects. Be sure to use many with identical last years and different prices. Create an ArrayList from the array. Shuffle the ArrayList. Sort the ArrayList first by year and then by price. See page 790-791. Using the forEach method and a lambda expression, print all cars sorted as above. Create a LinkedList from the ArrayList. Create an iterator capable of cycling both forward and backward through the LinkedList. Iterate forward through the entire LinkedList but without generating any output. Then iterate backwards through the LinkedList to print the cars data.For the numbers class add the following methods: A copy constructor. Overloaded == operator: This will return true if arrays in two different Numbers objects have the same sum of arrays, false otherwise. Overloaded < operator: Returns true if the sum of the numbers in the array of one Numbers object is less than the sum of the numbers in the array of the second Numbers object. For example, a < b is true if the numbers in a's array have a smaller sum than the numbers in b's array. Returns false otherwise. Overloaded postfix ++ operator: Increments every element in the object's array by 1. Overloaded [ ] operator: allows updating the appropriate element of the Numbers object's array. The method does nothing should terminate the program (calling exit) (note: updated on 11/6) if the user specifies an invalid index. Overloaded << operator: allows a Numbers object to be used with cout. For example: cout << a; This will cause the contents of the object's…Doctor -signature:String -doctorID:int - medicine:Arraylist +Doctor(signature:String,doctorID:int) +PrescribeMedicine():void + salary () +checkRecords():void Medicine Pharmacist -medName:String -startTime:int -dosage :int -endTime:int -date_prescribed:int - medicine:Arraylist +Medicine(medName:String,-dosage :int,date_prescribed:int) +Pharmacist (startTime:int,endTime:int) +checkForConflict():double +confirm_prescription():String +getStartTime():int +getEndTime():int +setStartTime(time:int):void +setEndTime(time1:int).void
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- Enhanced selection sort SelectionSortDemo.java package chapter7; /** This program demonstrates the selectionSort method in the ArrayTools class. */ public class SelectionSortDemo { public static void main(String[] arg) { int[] values = {5, 7, 2, 8, 9, 1}; // Display the unsorted array. System.out.println("The unsorted values are:"); for (int i = 0; i < values.length; i++) System.out.print(values[i] + " "); System.out.println(); // Sort the array. selectionSort(values); // Display the sorted array. System.out.println("The sorted values are:"); for (int i = 0; i < values.length; i++) System.out.print(values[i] + " "); System.out.println(); } /** The selectionSort method performs a selection sort on an int array. The array is sorted in ascending order. @param array The array to sort. */ public static void selectionSort(int[] array) { int startScan, index, minIndex, minValue; for (startScan = 0; startScan < (array.length-1); startScan++) { minIndex = startScan; minValue =…Java programming language I have to create a remove method that removes the element at an index (ind) or space in an array and returns it. Thanks! I have to write the remove method in the code below. i attached the part where i need to write it. public class ourArrayList<T>{ private Node<T> Head = null; private Node<T> Tail = null; private int size = 0; //default constructor public ourArrayList() { Head = Tail = null; size = 0; } public int size() { return size; } public boolean isEmpty() { return (size == 0); } //implement the method add, that adds to the back of the list public void add(T e) { //HW TODO and TEST //create a node and assign e to the data of that node. Node<T> N = new Node<T>();//N.mData is null and N.next is null as well N.setsData(e); //chain the new node to the list //check if the list is empty, then deal with the special case if(this.isEmpty()) { //head and tail refer to N this.Head = this.Tail = N; size++; //return we are done.…classHighArrayApp { public static void main(String[] args) { intmaxSize=100;// array size HighArrayarr;// reference to array arr=newHighArray(maxSize);// create the array arr.insert(77);// insert 10 items arr.insert(99); arr.insert(44); arr.insert(55); arr.insert(22); arr.insert(88); arr.insert(11); arr.insert(00); arr.insert(66); arr.insert(33); arr.display();// display items intsearchKey=35;// search for item if(arr.find(searchKey)) System.out.println("Found " + searchKey); else System.out.println("Can’t find " + searchKey); arr.delete(00);// delete 3 items arr.delete(55); arr.delete(99); arr.display();// display items again }// end main() }// end class HighArrayApp // highArray.java // demonstrates array class with high-level interface // to run this program: C>java HighArrayApp //////////////////////////////////////////////////////////////// class HighArray { private long[] a; // ref to array a private int nElems; // number of data items…
- TaskDeclare and implement 5 classes: FloatArray, SortedArray,FrontArray, PositiveArray & NegativeArray.1- The FloatArray class stores a dynamic array of floats and itssize. It has:- A parameterized constructor that takes the array size.- An add method that adds a float at the end of the array.- Overloading for the insertion operator << to write the array to afile (ofstream)- Overloading for the extraction operator >> to read the arrayelements from the file (ifstream) and add them to the array.- A destructor to deallocate the array2- The SortedArray inherits from FloatArray. It has:- A parameterized constructor that takes the array size.- An add method that adds a float at the right place in the arraysuch that the array remains sorted with every add. Don’t add tothe array then sort but rather add in the right place.3- The FrontArray inherits from FloatArray. It has:- A parameterized constructor that takes the array size.- An add method that adds a float at the front of…Task on Key index Searching & Sorting Create a KeyIndex class with the following properties : Fields: int [ ] k; Description An array of integers. Note: You may maintain another global variable if needed (but you can’t use more than one). Constructor: KeyIndex(int [ ]a) Description: This constructor takes an array of integers a and populates array k with the element in a as indices into k. Note: make sure the build-up of your array k supports negative and non-distinct integers. Methods: search (int val) Description: This method searches for the value val within the array and returns true if found or false otherwise. sort () Description: This method will return the sorted form of the array that had been passed into the constructor. NOTE: Create a tester class or write tester statements to check whether the methods in your KeyIndex class work properly. You need to submit both the classes as a part of your assignment.…Scanner sc = new Scanner(System.in);ArrayList <Student> students = new ArrayList<Student>();ArrayList <Student> courses = new ArrayList<Student>();// Method to read the file contents and stores it in// instance arraysvoid readStudents(){// Scanner class object declaredScanner readStuF = null;// try block beginstry{// Opens the file for readingreadStuF = new Scanner(new File("student.txt"));// Loops till end of the file to read recordswhile(readStuF.hasNextLine()){ String stu = readStuF.nextLine();String []eachStu = stu.split(" ");students.add(new Student(eachStu[0], eachStu[1],eachStu[2], Long.parseLong(eachStu[3]),Integer.parseInt(eachStu[4]), Integer.parseInt(eachStu[5]),Integer.parseInt(eachStu[6])));}// End of while loop }// End of try block// Catch block to handle file not found exceptioncatch(FileNotFoundException fe){System.out.println("\n ERROR: Unable to open the file for reading.");}// End of catch block // Close the filereadStuF.close();}// End of…