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- Assume that you have created a class named MyClass. The header of the MyClass constructor can be ____________. public MyClass() public MyClass (double d) Either of these can be the constructor header. Neither of these can be the constructor header.QUESTION 10 A class in general contains two sections: field declaration and methods declaration. O True O False QUESTION 11 Protected modifier restricts access to a method within the class where Iit was declared. O True O False QUESTION 12To create a subclass, you use the implements keyword after the class name. O True False
- T/F: Instance variables are shared by all the instances of the class. T/F: The scope of instance and static variables is the entire class. They can be declared anywhere inside a class. T/F: To declare static variables, constants, and methods, use the static modifier.You cannot use the isinstance function to determine whether an object is an instance of a subclass of a class.True or FalseDesign a Ship class that has the following members: A member variable for the name of the ship (a string) A member variable for the year that the ship was built (a string) A default and parameterized constructor and appropriate getters and setters. A toString method that displays the ship’s name and the year it was built. Design a CruiseShip class that is derived from the Ship class. The CruiseShip class should have the following members: A member variable for the maximum number of passengers (an int) A default and parameterized constructor and appropriate getters and setters. A toString method that overrides the toString function in the base class. The CruiseShip class’s toString function should display only the ship’s name and the maximum number of passengers. Design a CargoShip class that is derived from the Ship class. The CargoShip class should have the following members: A member variable for the cargo capacity in tonnage (an int). A default and parameterized constructor and…
- Parent Class: Food Write a parent class called Food. A food is described by a name, the number of grams of sugar (as a whole number), and the number of grams of sodium (as a whole number). Core Class Components For the Food class, write: the complete class header the instance data variables a constructor that sets the instance data variables based on parameters getters and setters; use validity checking on the parameters where appropriate a toString method that returns a text representation of a Food object that includes all three characteristics of the food Class-Specific Method Write a method that calculates what percent of the daily recommended amount of sugar is contained in a food. The daily recommended amount might change, so the method takes in the daily allowance and then calculates the percentage. For example, let's say a food had 6 grams of sugar. If the daily allowance was 24 grams, the percent would be 0.25. For that same food, if the daily allowance was 36 grams, the…Design a Ship class that has the following members: A member variable for the name of the ship (a string) A member variable for the year that the ship was built (a string) A default and parameterized constructor and appropriate getters and setters. A toString method that displays the ship’s name and the year it was built. Design a CruiseShip class that is derived from the Ship class. The CruiseShip class should have the following members: A member variable for the maximum number of passengers (an int) A default and parameterized constructor and appropriate getters and setters. A toString method that overrides the toString function in the base class. The CruiseShip class’s toString function should display only the ship’s name and the maximum number of passengers. Design a CargoShip class that is derived from the Ship class. The CargoShip class should have the following members: A member variable for the cargo capacity in tonnage (an int). A default and parameterized constructor and…Focus on classes, objects, methods and good programming style Your task is to create a BankAccount class. Class name BankAccount Attributes _balance float _pin integer Methods init () get_pin() check pin () deposit () withdraw () get_balance () The bank account will be protected by a 4-digit pin number (i.e. between 1000 and 9999). The pin should be generated randomly when the account object is created. The initial balance should be 0. get_pin () should return the pin. check_pin (pin) should check the argument against the saved pin and return True if it matches, False if it does not. deposit (amount) should receive the amount as the argument, add the amount to the account and return the new balance. withraw (amount) should check if the amount can be withdrawn (not more than is in the account), If so, remove the argument amount from the account and return the new balance if the transaction was successful. Return False if it was not. get_balance () should return the current balance.…
- The reference this can be used to refer to an object or to invoke another constructor of the same class. True FalseDesign/code/test a Java program containing an abstract the class absWelcome. This class should contain: 1. A public abstract void method (you name it) that is empty 2. A public regular method (you name it) that prints "Welcome to " Next, create a subclass clsHello that extends absWelcome. This class should contain: • A public regular method (you name it) that prints "Java Programming" Finally, inside the Main class create an object (you name it) from the clsHello class. Use this new object reference to: 1. Output "Welcome to " from the abstract class 2. Output "Java Programming" from the subclass Your output should resemble that shown below >sh -c javac -classpath -type f-name '*.java') java -classpath :targe Welcome to Java ProgrammingD: A 21. The method finalize automatically executes when the class object goes out ofI Scope. 22. A mutator method ofa class changes the values of the data members of the class. 23. In Java, the reference this is used to refer to only the methods. not the instance variables of a class.