True or False? Instantiating an array of objects reserves room to store references only.
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Instantiating an array of objects reserves room to store references only.
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- True or false: All elements in an array of objects must use the same constructor.Library class: Fields: books as arraylist to store all the books available in the library B3 B1 B2 В4 B5 Constructor: Library() } : No parameterized constructor to create the books object Methods: 1. addBook(Book bookobj): to add a new book to the arraylist; send the book object as a parameter to this method. 2. searchBook(String name): search a book by a given name in the arraylist. if exits print bookX found; otherwise print not found!!! 3. RemoveBook(String name): to delete a book object from arraylist by a given name: Hint: you need to use iterator class and remove method. Book class: Fileds: bookld, bookname. Constructor: two parameterized constructor that accepts name a parameter Book(int ID, String name) ..... Methods: 1. Accessor method to return the name of the book 2. Mutator method to change the id of the book. Use this Main method: in your program: public static void main(String args[]) { Library lib=new Library(); lib.addBook(new Book("b1")); lib.addBook(new Book("b2"));…JavaDriver Program Write a driver program that contains a main method and two other methods. Create an Array of Objects In the main method, create an array of Food that holds at least two foods and at least two vegetables. You can decide what data to use. Method: Print Write a method that prints the text representation of the foods in the array in reverse order (meaning from the end of the array to the beginning). Invoke this method from main. Method: Highest Sugar Food Write a method that takes an array of Food objects and finds the Food that has the most sugar. Note that the method is finding the Food, not the grams of sugar. Hint: in looping to find the food, keep track of both the current highest index and value. Invoke this method from main.
- 10. Lottery Application Write a Lottery class that simulates a lottery. The class should have an array of five integers named lotteryNumbers. The constructor should use the Random class (from the Java API) to generate a random number in the range of 0 through 9 for each element in the array. The class should also have a method that accepts an array of five integers that represent a per- son's lottery picks. The method is to compare the corresponding elements in the two arrays and return the number of digits that match. For example, the following shows the lotteryNumbers array and the user's array with sample numbers stored in each. There are two matching digits (elements 2 and 4). lotteryNumbers array: User's array: 7 4 4 2 1 3 7 3 In addition, the class should have a method that returns a copy of the lotteryNumbers array. Demonstrate the class in a program that asks the user to enter five numbers. The program should display the number of digits that match the randomly generated…1. An array is a container that holds a group of values of a 2. Each item in an array is called an 3. Each element is accessed by a numerical 4. The index to the first element of an array is 0 and the index to the last element of the array is the length of the 5. Given the following array declaration, determine which of the three statements below it are true. int [] autoMobile = new int [13]; i. autoMobile[0] is the reference to the first element in the array. ii. autoMobile[13] is the reference to the last element in the array. ii. There are 13 integers in the autoMobile array. 6. In java new is a which is used to allocate memory 7. Declare a one-dimensional array named score of type int that can hold9 values. 8. Declare and initialize a one-dimensional byte array named values of size 10 so that all entries contain 1. 9. Declare and initialize a one-dimensional array to store name of any 3 students. 10. Declare a two-dimensional array named mark of type double that can hold 5x3…В.width; } { t = B.type; w = { T.type = C.type; T.width = C.width; } T → B C В > int { B.type = integer; B.width 4; } В — foat { B.type = float; B.width = 8; } { C.type = t; C.width = w; } C - [ num] C1 = array(num. value, C1.type); { C.type C.width = num. value x C1. width; }
- Create a class named "Hotel" (3 marks) - The class must have 4 attributes. (Choose any 4 attributes you want) - This class must have two constructors, Getter Methods, and Setter Methods. - toString() method should return the name of the hotel. In the main class that has the main method: - In the main method, Create 4 objects or more from the class Hotel and store them in a normal array. (3 mark) - Create an external method that takes the array as an argument. It will add all the elements of the normal array into an ArrayList. Then, call the method to test it and print all elements data from the ArrayListAssignment: Enhancing Dice Roll Stats Calculator Program Introduction: The project involves creating a program to roll pairs of dice, gathering statistics on the outcomes. Probability differs in the roll of two dice compared to a single die due to varied combinations. Dice Roll Series: User greeted with "Welcome to the Dice Roll Stats Calculator!" and prompted to specify rolls. Java classes: DiceRoller, Indicator, Validator. DiceRoller: Arrays: rollSeries (captures results), statIndicators (stores statistical indicators). Constructor rolls dice as per user request. Methods collect stats and print the report. Indicator class: Contains dicePairTotal and dicePairCount. Displaying Results: Sort statIndicators array before display. Indicator objects sortable by dicePairCount (implements Comparable). Example output:-----------------------dicepair rolltotal count percent---- ------ --------7 5 50%10 2 20%4 2 20%2 1 10% Tasks:…Using java Hamburger ClassWrite a Hamburger class with the following six attributes:• bun - the type of bun the burger will be on• patties - the number of patties on the burger• cheese - whether or not the burger will have cheese• price - the price of the burger• toppings - an array of five toppings; it will need to start empty Write getters/setters for all attributesexcept the toppings array.Your constructor should create a single on white with no cheese and no toppings with a price of $2.99.Your class should include the following methods in this order, please: addCheese - this method has noparameters that adds cheese to the burger and increases the price by 75 centssuperSizeIt - this method has no parameters and adds a patty to the burger and increases the price by 1.50addToppings - this method would present the user with at least five toppings (your choice) stored in an array of Stringobjects. If the user indicates the wants the item, store the String in the toppings array. There…
- Recipe Program - Java ONLYI am looking to create a program that is a recipe holder. It needs to include at a minimum: At least 1 loop An Array or ArrayList At least 3 Java classes Use of methods The program would allow the user to (as part of a menu selection): Add a recipe Include ingredient list Instructions List all recipes that are in the program (array) Display a single recipe Search Recipes (option to view recipe selected) For example, searching for peanut butter cookie would bring up the recipe or multiple if the same name. The user could then select one of them to view the recipe. Search Recipes with a single ingredient (option to view recipe selected) For example: search for coconut and it would bring up coconut cream pie and German chocolate cake. The user could then select one of them to view the recipe. Close application Also need the program in a UML diagram.What happens when an object such as an array is no longer referenced by a variable?Lab9C: 2D or not 2D For this exercise you will also be writing a program that will be building upon Lab9A. So please make new class file, copy, and rename the code you have already written for Lab9A. Please also rememb to rename the file and (and in the case of Java and C# students) class name to Lab9C. For this exercise, please take the array that was filled up with values and flatten it i.e., convert the 2-0 array to a 1-D array that contains the same values. Please do not just print the 2-D array to look li a 1-D array Hint: You will have to take the 2-D array's total amount of cells and make a 1-D array of the same siz Please refer to the sample output below for visualization and match its style. As always: Remember, the class name should be Lab9C. The user input is indicated in bold. Sample Output #1: Please enter the number of rows: 4 Please enter the number of columns: 4 I have 4 rows and 4 columns. I need to fill-up 16 spaces. The 4x4 array: 1|2|3|4| 5|6|7|8| 9|10|11|12|…