Which of the following methods are used to only obtain the value of an object's instance variables? Mutator mothodc
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- Match the following: A class that contains no methods (other than constructors) that change any of the data in its object modifier means that there are no restrictions on where an instance variable or method can be used hiding implementation details is done by marking data and methods as When we call a method in Java using class type parameters Overloading is achieved when two or more methods in the same class have the same…Create a PhoneListing class that uses the Name class for one of its instance variables. Remember the instance data in the Name class is private to the class and must be accessed through its methods.Add additional instance variables to the PhoneListing class for the phone number. The phone number should be broken down into three parts, area code, city code, and local code.Create all appropriate methods for the new class, including the following three methods: equals(PhoneListing):boolean, an equality of state method that returns true if the objects contain the same name and phone number. compareTo(PhoneListing):int, a comparison method that returns -1 if the calling PhoneListing object should precede the argument PhoneListing object, 1 if the calling PhoneListing object should come after the argument PhoneListing object, and a 0 if they are equal. Use last, first, middle, phone number as the ordering values. example:Adams, Alex, Henry, (609)473-2101 Adams, George, Henry, (509)373-1101…(Java) Question 2 Explain the answer step-by-step and include verbal explanation. Thank you! What is the difference between overriding a method and overloading a method? Select the correct option next to each statement, or select both options if the statement is true for both. Both methods have the same name: Overriding / Overloading Both methods have the same signature: Overriding / Overloading Both methods are defined in the same class: Overriding / Overloading
- Ans8 izt--7 Write the following Book class:A Book has-a title, ISBN number, author and price.o Include the following:o All instance fields (variables)o Two Constructors: a default constructor and onerequiring all fields as parameterso Methods – an accessor and mutator for each instancefieldso Create two Book objects with title, isbn, author andpriceo Print the information about the bookso Change the price of both books.o Reprint the information about the books.PLZ help with the following: Consider the following class For each of the following methods, indicate if it can or cannot be legally inserted in place of the comment //Method Here. If a method cannot be inserted, briefly explain why not.Change the Fraction class so that its instance variables (numerator and denominator) are hidden (i.e. private). Check that the client class (after this change) will now not compile. Why does it not compile? Provide the changes to the Fraction class and the TestFraction class such that the program can work with the private instance variables by implementing appropriate accessor and mutator methods. import java.util.Scanner;//test programpublic class testfraction{public static void main(String[] args) {//create a Scanner objectScanner in = new Scanner(System.in);//create new fractionFraction frac = new Fraction();//declare numerator and denominatorint n=1,d;System.out.print("Enter Fraction's Numerator: ");//input numeratorn = in.nextInt();System.out.print("Enter Fraction's Denominator: ");//input denominatord = in.nextInt();//loop execute until the numerator is negativewhile(n>=0){//call input with n and dfrac.input(n, d);//call displayfrac.display();System.out.print("Enter…
- (Java) Identify the true statements, select all that apply: -Setters and getters are not required for public instance variables -Every private instance variable in a class definition must have a mutator method -A getter method has the same return-type as the field it retriees and takes no paramaters -A setter method is a return-type void and takes a parameter of tehe same type as its field(1) Add an __init__ method to the Widget class below. Each object of type Widget should have an instance variable called name and an instance variable called cost that represents a cost in dollars; those values are passed in when an object of type Widget is initialized. (2) Add a method to class Widget called is_cheap that returns True if the cost is less than $10, and False otherwise. (3) Add proper doctrings along with two examples for each method. You may use the Sample Usage code given below in your work.Q# Which of the following might have only method signatures? Group of answer choices 1. An interface 2. An abstract class and a concrete class 3. An abstract class 4. An interface and an abstract class 5. None of these, they all require the implementation. 6. A concrete class
- What is included in the method private void buildLetterTable() { implemented in the class AnagramsExplain........... A method defined within a class and whose header does NOT include the static modifier is known as which of the following? a class method b instance method c super method d private method e public methodIN JAVA When is is necessary to create an object to call a method? A. When the method is an instance method. B. When the method has a return value. C. When the method is void. D. When the method is a static method.