A string object is ______ which means its contents cannot be changed. Select one: a. Absolute b. Immutable c. Undisputable d. Irreversible
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A string object is ______ which means its contents cannot be changed.
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- The __________ creates an object in memory and returns a reference to that object. a. = operator b. object allocator c. reference variable d. new operatorIf you write this method for a class, Java will automatically call it any time you concatenate an object of the class with a string.a. toStringb. plusStringc. stringConvertd. concatStringOOP1 - Objects, Classes, and Encapsulation Create a program that has the following method and corresponding usage. 1. AreaCircle - compute the area of the circle
- Staff # name: String # id: int PartTimer + Staff() + Staff(name: String, id: int) skillLevel: int + getName (): String + getId (): int + calculatePay () : double + toString (): String hoursWorked: int + Part Timer (name: String, id: int, skillLevel: int, hoursWorked: int) + getskillLevel(): int + getHours Worked () : int + tostring () : String java.lang.Comparable compareTo (o: Object): int Figure 1: The relationship between staff, PartTimer and Comparable Skill Level / Tahap Kemahiran Pay Rate Per Hour/ Kadar Bayaran Per Jam 0 ( Basic / Asas) RM50.00 1 (Moderate / Sederhana) RM100.00 RM150.00 2 (Expert / Mahir) Table 1: Skill level and the pay rate per hour Write a complete Java program to create PartTimer class and test class based on the Figure 1, Table 1 and the following requirements: Partimer class is derived from staff and implements Comparable Interface. The calculate Pay()method from the staff class will be implemented in the subclass to calculate the employee's pay. The pay…python class Student:def __init__(self, first, last, gpa):self.first = first # first nameself.last = last # last nameself.gpa = gpa # grade point average def get_gpa(self):return self.gpa def get_last(self):return self.last def to_string(self):return self.first + ' ' + self.last + ' (GPA: ' + str(self.gpa) + ')' class Course:def __init__(self):self.roster = [] # list of Student objects def drop_student(self, student):# Type your code here def add_student(self, student):self.roster.append(student) def count_students(self):return len(self.roster) if __name__ == "__main__":course = Course() course.add_student(Student('Henry', 'Nguyen', 3.5))course.add_student(Student('Brenda', 'Stern', 2.0))course.add_student(Student('Lynda', 'Robinson', 3.2))course.add_student(Student('Sonya', 'King', 3.9)) print('Course size:', course.count_students(),'students')course.drop_student('Stern')print('Course size after drop:', course.count_students(),'students')Pig Latin is a nonsense language. To create a word in pig Latin, you remove the first letter and then add the first letter and ay at the end of the word. For example, dog becomes ogday and cat becomes atcay. Write a program named PigLatin that allows the user to enter a word and displays the pig Latin version.
- Course information are created using a class "Course', the class contains: Course code java language please Course title Course number of credits Course -code: String -title: String -credits: int +Course (code:String, title:String, credits:int) +getnfo (): String +toString (): String 2/4 getinfo() returns course info as follows: Code: csci410 Title: Mobile Applications Credits: 3 toString () method returns the title of the course as a stringFarrell, Joyce. Microsoft Visual C#: An Introduction to Object-Oriented Programming 5. Create a project for a sandwich shop. The project, named SalsSandwiches, allows a user to use a ListBox to choose a type of sandwich from at least four choices (for example, Roast beef). When the user selects a sandwich type, the program should display a second ListBox that contains at least three types of bread (for example, Whole wheat). After the user selects a bread type, the program should display a third ListBox with at least three choices for additions (for example, Lettuce). Display a message on a Label that lists all the chosen options, and make the bread and additions ListBoxes invisible. If the user makes a new selection from the first ListBox with the main sandwich choices, the bread option becomes available again, and if a new bread selection is chosen, the additions option becomes available again.PYTHON ONLY PLZZZZ Create a car object with the following attributes and actions: Name Make Model Year price Actions: Compute the age of the car Compute the cost plus a 9% tax Compute a 10% depreciation for every 5 years To string Test your object: Ask the user for all the information compute using all the actions of the object print using the to string action Describe the numbers and text you print. Do not just print numbers or strings to the screen explain what each number represents.
- name: string - ownerName: String Cat numberOfTeeth int lengthofTail : int + Cat (name: String, ownerName: String, numberOfTeeth: int, lengthofTail:int) i. ii. + Pet (name:String, ownerName: String) + getName(): String + getownerName (): String + getNumberOfTeeth (): int + getLengthofTail(): int Pet iii. Budgie colourOfFeathers: String + Budgie (name: String, 1. Convert the UML class diagram above into a java code with the following conditions The methods in the Pet class are abstract. ownerName: String, colourofFeathers:String) + getColourOfFeathers (): String Create a class called test. The main() method in the test class should create three Cat objects and two Budgie objects. The main() method should also create indirectly an object of the Pet class. Demonstrate polymorphism in your test class. 2. Write a Java Code for a simple GUI program that creates a frame and changes the background to green. Examiner's Name: George Kodjo Annian object can have_____ value if it refers to no object at all javaTrue or False _(1) The expression n/3*(8+4) evaluates to 16 if n=4 ___(2) x is greater than both y and z can be written as the statement x>y&&z ; in Java. ___(3) In Java a string is automatically an object.
