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- Task 3: Array of Objects Mr. Ahmed wants to create a database of employees in his company with three records for each employee: Employee ID, Name and Salary • Write a Java program to create 'Employee' class with attributes employee ID, employee name and Salary. • The program should ask the user to enter the number of employees in the company, read their details, store in an array and display the details in the following fomat: SI No: Employee ID: Name: Salary:Create a class Department with attributes DName, DID, a dynamic listDTeachers of type string.Write accessors and mutators for all data membersand show function to show all data members.Create nullaryand parameterized constructors to initialize the data members.Also write a copy constructor for Department class.In main() create a dynamic array of departments, Use loop to create four objects in the dynamic array. All the even indexed objects should be created with nullary constructors and thencall the accessors and mutators to initializethe objects while, all the odd indexed objects should be initialized using parameterized constructors. Create four copy objects from array using copy constructors.Call the show function to show the four objects.Retrieving a value using its associated key can be accomplished using anindexer, which works just like an indexer for an array. A key is passed in asthe index value, and the value associated with the key is returned, unless thekey doesn’t exist, in which a null is returned.Write short code segment demonstrates how this technique works:
- Test 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.There should not be an array for for baby names and another array for baby ages.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 same. class Baby{ //data members private String name; private int age; //default constructor Baby() { name = "xyz"; age = 3; } //parameterized constructor Baby(String n,int a){ name = n; age = a; } //sets name public void setname(String n){ if(n.isEmpty()) name…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…19. A two-dimensional array is frequently called a matrix and such a matrix is usually displayed in a row X col format. Write a method, which displays a 3 X 4 matrix to the monitor, in a format like: sample data: 10 11 12 13 14 15 16 17 18 19 20 21 Complete method displayMatrix below. // precondition: // postcondition: 11 mat is a non-empty 2D array of int values. displayMatrix displays the elements of 2D array mat in Row X Col format. public static void displayMatrix(int[][] mat)
- Task Declare and implement 5 classes: FloatArray, SortedArray, FrontArray, PositiveArray & NegativeArray. 1- The FloatArray class stores a dynamic array of floats and its size. 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 a file (ofstream) - Overloading for the extraction operator >> to read the array elements from the file (ifstream) and add them to the array. - A destructor to deallocate the array 2- 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 array such that the array remains sorted with every add. Don’t add to the 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…Using java in netbeans Create a two-dimensional array of type double to contain the three different SD Marks (JD521, PRG521, and IP521) for six different students. A single array of type String must be used to store the student names (Maxwell, Carl, Gerhard, Paul, James, and Cena). Allow a user to enter in a number, ranging from 1 to 6, which will represent the student position in the table MCSD max and present the marks for each respecting module. The program can only stop when the user enter a number greater than 6. Printout the student name including the JD521, PRG521, and IP521 max, the total of marks and the average of all marks. Use a condition statement to decide that the student has passed or not (Pass rate is 70). Student name JD521 PRG521 IPG521 Maxwell 80 65 70 Carl 95 70 65 Gerhard 87 80 73 Paul 65 45 60 James 45 87 65vWhat happens when an object such as an array is no longer referenced by a variable?
- A university is analysing students' academic performance in a course using an application. As shown below, the application generates a list of final marks and an academic performance reрort: The following information is required to generate the final mark listing and academic performance report: Course details The course details to be stored in the program include a list (array) of final marks, number of students, a list (array) of the distribution of frequencies of grades. The final marks are stored in a text file named marks.txt. Download the data file, marks.txt from WBLE for building the list of final marks in the program. The final marks: 75B+ 79B+ 88A 96A+ 90A+ 80A 76B+ 76B+ 79B+ 76B+ 75B+ 91A+ 92A+ 82A 84A 76B+ 97A+ 93A+ 95A+ 82A 78B+ 81A 81A 82A 77B+ 75B+ 85A 63B 67B 71B+ 73B+ 73B+ 72B+ 68B 74B+ 69B 73B+ 68B 62B 61B 68B 70B+ 66B 61B 62B 64B 62B 71B+ • Listing the final marks with associated grades After building the list of final marks in the program, all the final marks and…Using the provided MinHeap implementation & helper functions, build two sorted arrays as follows: Option 1:Given an unsorted array, build a sorted array in ascending order utilizing a minheap. Hint: this one is quite easy.. Load a minheap with your unsorted array. From there you can get the min element from the minheap & build your sorted array. Option 2:Given your unsorted array loaded into a maxheap.. Using this max-heap, in which the root node contains the largest element, build a sorted array in ascending order. To achieve this you’ll ‘Float’ the max to the front and build the sorted list from the back. The basic idea is to sort in place. - Every time the algorithm polls from the heap, the heaps size shrinks by one. - Hence, the next place at the end of the array is not part of the heap anymore. - At this index the n-th smallest number is placed. Final Solution should look like: Array to be sorted by MinHeap: [5, 3, 17, 10, 84, 19, 6, 22,…8. Which of the following statement is correct? If we pass the reference using out, value should be initialized in the called method If we pass the reference using ref, value should be initialized in the called method Using ref we also can call a method by passing value O If we pass the reference using out, value should be initialized in the called method 9. While using params, the parameter can be a single variable, one dimensional array as well as a two-dimensional array. True False