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.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. ||
- 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; } }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:"); } }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…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
- If Class A inherits from Class B, we say that Class B is the subclass and Class A is the superclass. True FalseVehicle 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 }}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();…