Given the following class hierarchy, identify whether the method foo is overloaded, overridden, or neither by the subclass: public class Parent { public void foo(int i, String s) { /* implemented */ } } public class Child extends Parent { public void foo(int i) { /* implemented */ }
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- PROGRAMMING LANGUAGE: JAVA SUBJECT: ADVANCED OOP WITH JAVA QUESTION NO 1: Make an abstract class named A1 with 2 abstract methods, then implement those methods in child class.JAVA CLASS AND OBJECT JAVA JAVA JAVA Write a java program/code of the given problems below: abstract class Animal { // abstract methods abstract void move(); abstract void eat(); // concrete method void label() { System.out.println("Animal's data:"); } } 1.) Modify the abstraction example code above by adding another class “TestCarabao” with the necessary methods “label, move, and eat”. 2.) Write a program that creates a car object, and displays the year and name with one method “speed”. Example output: Year: 2021 Model: Toyota Speed: 200km/h 3.) Write the main class of the given class Animal below that set the number of legs to “4” and display (get) the number of legs. class Animal { private int numberOfLegs; public void setNumberOfLegs(int numberOfLegs) { this.numberOfLegs = numberOfLegs; } public int getNumberOfLegs() { return numberOfLegs; } }A subclass of an abstract class must implement all of the parent class's abstract methods. Is it true or false?
- 2. Consider the following class definitions: public class BClass private int x; public void set(int a) { x = a; } public void print() System.out.print(x); } public class DClass extends BClass { private int y; public void set(int a, int b) //Postcondition: x =a; y=b; } public void print( ) {..} a. Write the definition of the print method of DClass that overrides it. b. Write the definition of the method set of the class DClass. ||Q: Write a full java application program to implement the following classes using inheritance, then apply instanceOf operator and dynamic binding Person: Variables:( Fname,Lname)/method: constructor /printInfo()/tostring() Student: Variables: (Id) / method: constructor/Print()/tostring() ITStudent: Variables: (ml,m2,m3)/ method: constructor/avg()/tostring()language: Java Class Inheritance with an abstract class Define a class Employee with the following fields: _name, _empId, _department, _position (_title), _yearlySalary, _fullTime (a boolean: true/false) , _month , _year (time of hire) Add constructor and properties Define an abstract method GetBiMonthlySalary() (if the employee is paid twice a month) Define an abstract method GetVacationTime() that returns the number of vacation time this employee would have based on time of hire Override the ToString() method to return a string that contains the information pertaining to an employee such as name, empId, department, and where full time or not. Define a class HourlyEmployee that inherits from Employee. This class should have 2 fields of its own: _hours (hours worked in half a month) and _wage (hourly wage) Provide necessary constructor, properties and methods Override the ToString() to also return the additional fields Gets 3 days of vacation after first year if the…
- JAVA CLASS AND OBJECT Modify the java program/code given below. 1.) Modify the abstraction example code below by adding another class “TestCarabao” with the necessary methods “label, move, and eat”. abstract class Animal { // abstract methods abstract void move(); abstract void eat(); // concrete method void label() { System.out.println("Animal's data:"); } }Consider the following class: public class theClass { private double value; private string str; public static int count; public theClass () { } public theClass (double d, int, x, String s) { } public void print() { } public static void incrementCount() { } } a) How many members do class theClass have? b) Compare the purpose of the two constructors. c) Use the reference this to write the definition of a method print( )to output the value of the instance data members separated by commas. d) Write a statement to create an object myClass of the class theClass and initialise the instance variables to 5, 10.75 and the string Class. e) Write a definition (heading) for a copy constructor for the class.When a concrete class inherits from an abstract class, you have to implement all abstract methods declared in the super class before you can instantiate it (the concrete class). True False
- Exercise 1 Consider the following definition of the class MyClass: public class MyClass { private static int count = 0; private int x; public MyClass(int i) { x = i; } public void incrementCount() { count++; } public void printX() { System.out.println("Value of x : " + x); } public static void printCount() { System.out.println("Value of count : " + count); } } public class MyClassDemo { public static void main(String[] args) { MyClass myObject1 = new MyClass(5); MyClass myObject2 = new MyClass(7); } } What is the output of the following Java code? (Assume that following statements are written inside main) myObject1.printX(); myObject1.incrementCount(); MyClass.incrementCount(); myObject1.printCount(); myObject2.printCount(); myObject2.printX(); myObject1.setX(14); myObject1.incrementCount();…Vehicle is an abstract class. Create the Airplane class as a subclass of Vehicle. Extend and override Airplane as necessary to meet the criteria below. The travel method should return the distance traveled by the Airplane object. CODE: abstract class Vehicle { public abstract double travel(double time);} //add class definitions below this line //add class definitions above this line public class Exercise2 { public static void main(String[] args) { //add code below this line //add code above this line }}If Class A inherits from Class B, we say that Class B is the subclass and Class A is the superclass. True False