java When we create an object of a class, the object's instance variables are automatically initialized with its default values without us writing code in any constructor. Choose one of the options: True False
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When we create an object of a class, the object's instance variables are automatically initialized with its default values without us writing code in any constructor.
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- Java A class always has a constructor that does not take any parameters even if there are other constructors in the class that take parameters. Choose one of the options:TrueFalsePython Programming Questions (OOP): Write a class named “Bicycle” that has the following instance variables: gear, speed and brakes. This class will as well have the following methods: changeGearUp, changeGearDown, speedup, speedDown, applyBrakes, and printStates. The printStates method can print all of the current attributes of the bike object and brakes can be a Boolean type. Create an object named bike and test some of your methods/code that you have written with some output delivered to the user.java If the first statement of a constructor has the form this(. . .), then the constructor calls another constructor of the same class. Select one: True False
- 1. Dummy GUI Application by Codechum Admin A GUI Application is an application that has a user interface that the user can interact with. For this program, we will be simulating this behavior. First, implement another class called Checkbox which implements the Clickable interface which has only one method: public void click(). The Checkbox will have the following properties: private boolean isChecked (defaults to false upon the creation of object) private String text Additionally, it should have the following methods: the implementation of the click() method If the isChecked is currently false, this will set the isChecked to true and will then print the message "Checkbox is checked". If it is currently true, this will set the isChecked to false and will then print the message "Checkbox is unchecked". Note that the messages to be printed should have also print a new line at the end. an override of the toString() method which returns the message: "Checkbox ({text} - Clicked…Java - Constructors Create a class named Book that has the following attributes: Publisher - String Year Published - Integer Price - Double Title - String Create a constructor for the class Book that has the parameters from the attributes of the class. After, create a method for the class that displays all attributes. Ask the user for inputs for the attributes and use the constructor to create the object. Lastly, print the values of the attributes. Inputs 1. Publisher 2. Year Published 3. Price 4. Book Title XYZ Publishing 2020 1000.00 How to Win? Sample Output Published: ABC Publishing Year Published: 2022 Price: 150.00 Book Title: Stooping too low Stooping too low is published by ABC Publishing on 2022. It sells at the price of Php150.00.java Assignment Description: Write a class named Car that has the following fields: The yearModel field is an int that holds the car’s year model. The make field references a String object that holds the make of the car. The speed field is an int that holds the car’s current speed. In addition, the class should have the following constructor and other methods. The constructor should accept the car’s year and make as arguments. These values should be assigned to the object’s yearModel and make fields. The constructor should also assign 0 to the speed field. Constructor: The constructor should accept no arguments. Constructor: The constructor should accept the car’s year as argument.Assign the value to the object’s yearModel. No need to assign anything to the make and assign 0 to speed. Appropriate mutator methods should set the values in an object’s yearModel, make, and speed fields. Appropriate accessor methods should get the values stored in an object’s yearModel, make, and…
- Internally your program should have two Java classes: ValidatorNumeric (superclass) ValidatorString (subclass) The subclass ValidatorString extends ValidatorNumeric class, forming a hierarchy of two classes. Add a separate main class with the main() method to test all public methods in both ValidatorNumeric and ValidatorString classes. The main() method should create the necessary objects and run the user interaction as shown above. The ValidatorNumeric class is responsible for capturing user prompt and a range of valid numeric inputs. Its methods display the prompt and accept input from the user. It should provide the following public interface: // Default constructor ValidatorNumeric() // Specific constructor taking params as follows: ValidatorNumeric( String prompt, int min, int max ) // Another specific constructor taking params as follows: ValidatorNumeric( String prompt, double min, double max ) // Method that shows user prompt and gets an int from the user: public…Product -code: String -description: String --price: double +Product() +Product(code: String, description: String, price: double) +setCode(code: String): void +getCode(): String +setDesciption(description: String): void +getDescription(): String +setPrice(price: double): void +getPrice(): double +print(): void Book Software -author: String +Book() +Book(code: String, description: String, price: double, author: String) +setAuthor(author: String): void +getAuthor(): String +print(): void -version: String +Software() +Software(code: String, description: String, price: double, version: String) +setVersion(version: String): void +getVersion(): String +print(): void (1) Implement the three classes described in the UML diagram above. The Book and Software are two subclasses of the Product class. - The no-arg constructors should assign empty string "" to String type data fields and 0 (zero) to double type data fields. The constructors with arguments should assign specified values to perspective…In Java create the following: Design a Ship class that the following members: A field for the name of the ship (a string) A field for the year that the ship was built (a string) A constructor and appropriate accessors and mutators A toString method that displays the ship’s name and the year it was built Design a CruiseShip class that extends the Ship class. The CruiseShip class should have the following members: A field for the maximum number of passengers (an int) A constructor and appropriate accessors and mutators A toString method that overrides the toString method in the base class The CruiseShip class’s toString method should display only the ship’s name and the maximum number of passengers Design a CargoShip class that extends the Ship class. The CargoShip class should have the following members: A field for the cargo capacity in tonnage (an int) A constructor and appropriate accessors and mutators A toString method that overrides the toString method in the base class…
- java languageCreate a class with following attributes: The car's make The car's model The car's year Now let's identify the class's methods. Specifically, the actions are: Constructor of Car class Set and get the car's make Set and get the car's model Set and get the car's year Now create few instance of the Car in a Test class. Use getter and setter to set the instance variables. Create a class with following attributes: The car's make The car's model The car's year Now let's identify the class's methods. Specifically, the actions are: Constructor of Car class Set and get the car's make Set and get the car's model Set and get the car's year Now create few instance of the Car in a Test class. Use getter and setter to set the instance variables.1- Write a Java class that models a Vehicle. There are three types of vehicles (Sedan, SUV, Truck). Every vehicle object should also contain an instance variable that can be used to store the time at which the vehicle has entered the car parking building (Hint: use the java.util.Date class to represent the time). In addition to the constructors, you should provide the following methods: public double getDuration(Date exitTime) this method will return the duration (in minutes) from the time the vehicle entered the parking until the given exitTime. public String getType() this method will return either Sedan or SUV or Truck based on the vehicle type. public void setType(String type) this method will set the type of the vehicle to either Sedan or SUV or Truck. public void setEntryTime(Date entryTime) this method will set the time at which the vehicle has entered the parking.java A constructor is a special method that has the same name as the class and the return type void. Choose one of the options:TrueFalse