For the following class, write the code to create two different objects: public class Course{ private String courseCode; private int creditHours public Course(){ this.creditHours= 3; } public Course(String code, int h){ this.courseCode=code; this.creditHours =h; } } java
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OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
For the following class, write the code to create two different objects:
public class Course{
private String courseCode;
private int creditHours
public Course(){
this.creditHours= 3;
}
public Course(String code, int h){
this.courseCode=code;
this.creditHours =h;
}
}
java
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Solved in 2 steps
- Given the following class: public class Student { private long ID; private String name; } Write two constructor methods for the Student class, one without parameters and the other with.*using java* Create a class AnimalCreate a class Cat, and a class Dog, and a class Bearded Dragon which extend Animal. Add to your Animal class: Member: name Methods: Public Animal(String name) //constructor public void makesSound()with the implementation printing out a generic animal sound. Next, override (add) the makesSound()method to your Cat and Dog class, with the implementation specific to each animal (i.e, cat says purr..). Do not override the makesSound() for your Dragon (bearded dragons don’t make sounds!)Note, you’ll also need a constructor in each of your subclasses which calls super(name) to initialize the common ‘name’ member of Animal. --- Next (in your test harness) create a List of different Animals ( a couple cats, a dog, a dragon... ) and add these Animals to your list. Iterate through your list & call makeSound on each. ( you should observe the implementation of the makeSound() method called will be: cat -> from Cat class, dog-> from Dog class,…In this exercise, you have to calculate the student's total marks using the concept of Classes Problem Statement# Write a Java class called Student with ● private fields: ○ name(String type) ○ mark1 and mark2 (double type) And methods: ● getMarks(int markNumber), a method which should return mark1 if markNumber equals 1 and mark2 otherwise. ● calcTotal() method should take the two marks entered and return their sum. Also define two constructors: ● A default constructor that takes no parameters and initializes the values to zeros and null. ● A constructor that takes the three variables and sets them as the values of the appropriate fields. Input# Name of the student and the marks obtained in the first and second tests Output# Sum of both marks Sample Input# Student student = new Student("Jack", 60, 70); Sample Output# getMarks(1) => 60 getMarks(2) => 70 calcTotal() => 130.0 Part of solution class Student { // Define private fields here public Student() { // Write…
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- The BankAccount class described below is used to represent a personal savings account with a yearly interest rate, (represented as a percentage, e.g., a 7% rate is represented by .07). The interest is applied monthly, (i.e., at the end of each month 1/12 of the interest is deposited into the account). public class BankAccount { public BankAccount(double rate) public BankAccount(double initBal, double rate) public double getBalance() public double getIntRate() public void setIntRate(double rate) public void deposit(double amount) public void withdraw(double amount) public void addMonthsInterest() private double balance; private double intRate; } Suppose a bank offers to its special customers a new type of savings account, called a “Credit Account”, that allows the customer to withdraw extra money if needed, so that the account balance is allowed to be negative at some times. These accounts award interest at the end of every month, as long as the balance is positive. If the…There is a class hierarchy that includes three classes: class Animal { protected int age; public int getAge() { return age; } public void setAge(int age) { this.age = age; }}class Pet extends Animal { protected String name; public String getName() { return name; } public void setName(String name) { this.name = name; }}class Cat extends Pet { protected String color; public String getColor() { return color; } public void setColor(String color) { this.color = color; }} Given the following object: Pet cat = new Cat(); Select all invalid method invocations.COMPLETE THE JAVA CODE BELOWSEE ATTACHED PHOTO FOR THE PROBLEM AND THE OUTPUT class Employee extends Person { private String companyName; public Employee(String name,String address,int age,String companyName) { super(name,address,age); this.companyName = companyName; } public Employee() { } public void setCompanyName(String cname){ companyName = cname; } public String getCompanyName(){ return companyName; } // Override the display method in the Person class // define earnings as an abstract method with a return type of double // override the toString() and equals() methods } class HourlyEmployee extends Employee{ private int hoursWorked; //total number of hours worked private double rate; // rate per hour public HourlyEmployee(String name,String address,int age,String cName,int hoursWorked,double rate) { } public HourlyEmployee(String name,String address,int age,String cName)…
