1. Declare a (local) variable of type Person, create a new Object and assign the variable to this object. 2. Declare an ArrayList variable which can hold objects of type Person 3. Create a new ArrayList with objects of type Person and assign it to the existing variable persons.
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1. Declare a (local) variable of type Person, create a new Object and assign the variable to this object. 2. Declare an ArrayList variable which can hold objects of type Person 3. Create a new ArrayList with objects of type Person and assign it to the existing variable persons. |
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- 17. Phone Book ArrayList Write a class named PhoneBookEntry that has fields for a person's name and phone number. The class should have a constructor and appropriate accessor and mutator methods. Then write a program that creates at least five PhoneBookEntry objects and stores them in an ArrayList. Use a loop to display the contents of each object in the ArrayList.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"));…Task 4. Utility classes Implement a Menu-Driven program of ArrayList class using the above scenario and perform the following operations. Create an object of ArrayList class based on the scenario with explanations of the method Create a method that will allow inserting an element to ArrayList Class based on the scenario. The input field must be validated as Create a method to delete specific elements in the ArrayList with explanations of the method
- True/ False 1- Class objects can be defined prior to the class declaration. 2- You must use the private access specification for all data members of a class. 3- If an array is partially initialized, the uninitialized elements will be set to zero. 4- A vector object automatically expands in size to accommodate the items stored in it. 5- With pointer variables, you can access but not modify data in other variables. 6- Assuming myValues is an array of int values and index is an int variable, both of the following statements do the same thing. 1. cout header file. 15- To solve a problem recursively, you must identify at least one case in which the problem can be solved without recursion.Create a player class and a Key class. A Player hasa name, HP, and a key. A character may only have one key at a time, a Key contains a String array that lists the names of all the placed the key can go. The key should have a use() function that takes in a string of what it is trying to be used on, the function will return true if it can be used on that door, and false if it cannot. The player can pick Up and Drop a key.PyCharm Programming! A Game object knows its name and the number of avators is currently has. It is initialized without Avatars objects. It has a method startGame, which initializes an internal empty list of Avator objects. It has a method to add one Avator object at a time to the Game. It also has a method to remove an Avatar object by the Avatar’s name. A Game object also has a method to animate all its current Avatar objects. Furthermore, it has a method to stopGame, which destroys all current Avator objects in its internal list. The Avatar class creates simple human-type Avatars, which have attributes such as name, hair color, height, superpower. An Avatar object can change its hair color and superpower. It also has a method that “animates” the avatar. The animate() method should simply be a print message such as “Hello! I am …! I have…. hair and my super power is….!”, using the Avatar’s object variables. In main program, create 3 different Avatar objects that resemble 3…
- In previous chapters, you have created programs for the Greenville Idol competition. Now create a Contestant class with the following characteristics: The Contestant class contains public static arrays that hold talent codes and descriptions. Recall that the talent categories are Singing Dancing, Musical instrument, and Other. The class contains an auto-implemented property that holds a contestants name. The class contains fields for a talent code and description. The set accessor for the code assigns a code only if it is valid. Otherwise, it assigns I for Invalid. The talent description is a read-only property that is assigned a value when the code is set. Modify the GreenvilleRevenue program so that it uses the Contestant class and performs the following tasks: The program prompts the user for the number of contestants in this years competition; the number must be between 0 and 30. The program continues to prompt the user until a valid value is entered. The expected revenue is calculated and displayed. The revenue is $25 per contestant. The program prompts the user for names and talent codes for each contestant entered. Along with the prompt for a talent code, display a list of the valid categories. After data entry is complete, the program displays the valid talent categories and then continuously prompts the user for talent codes and displays the names of all contestants in the category. Appropriate messages are displayed if the entered code is not a character or a valid code.Computer Science You are required to develop a small chatting application where two or more friends can communicate each other through messages. Create a class Message which has Date d, and message (string). Provide getters/setters, constructors, toString. Create a class Friend having String name, String contact, email and ArrayList of Messages provide getters/setters, constructors, toString addMessage(Message m) method which will add new message to the list. Provide following options to the user using JFrame. Login which will help user login to the application. View Friends (Display List of All Friends) View Messages ( This should display all message of a Friend) Send message (This should ask for friend name and message match the friend name and write that message to the array list).Create a MagicalPotionShop class, this class needs a field called potions. The potions field should be an ArrayList of the type Potion. Create a MagicalPotion class, this class needs two fields one called name, the other called effect. Both of the fields should be Strings.
- Declare and initialize 2 Animal objects with the following properties: A animal named Zirly the Zebra with the zebraZirlyBehaviors created above and a weight of 812.3 pounds A animal named Henry the Hawk with the henryTheHawkBehaviors created above and a weight of 35.5 pounds. Then, store the 2 animal objects in an array named animalList Choose one of the following from the above choices (A, B, C or D within the code). // Assume the following constructor exists within the Animal class: public Animal(String animalName, double weight, Behavior[] behaviorList) { this.animalName = animalName; this.weight = weight; this.behaviorList = behaviorList; } //A Animal zebraZirly = new Animal(812.3, "Zirly the Zebra", zebraZirlyBehaviors); Animal henryTheHawk = new Animal(35.5, "Henry the Hawk", henryTheHawkBehaviors); Animal[] animalList = new Animal[]{zebraZirly, henryTheHawk}; // B Animal zebraZirly = new Animal("Zirly the Zebra", 812.3,…Write a program that will contain an array of person class objects. The program should include two classes: 1) One class will be the person class. 2) The second class will be the team class, which contain the main method and the array or array list. The person class should include the following data fields; Name Phone number Birth Date Jersey Number Be sure to include get and set methods for each data field.The team class should contain the data fields for the team, such as: Team name Coach name Conference name The program should include the following functionality. Add person objects to the array; Find a specific person object in the array; (find a person using any data field you choose such as name or jersey number) Output the contents of the array, including all data fields of each person object. (display roster)Data structure & Algrothium java program Create the three following classes: 1. class containing two strings attributes first name and last name.2. class containing the name object and an ArrayList of string to store the list gifts. This class would extend the attached NicePersonInterface.java3. class containing one ArrayList of Names to store the naughty names. Another ArrayList of NicePerson to store the nice names and gifts. Add atleast 4 names in each list and display all information.