Question

Write a class encapsulating the concept of a corporate name (for example, IBM), assuming a corporate name has the following attribute: the corporate name. Include a constructor, the accessors and mutators, and methods toString() and equals(). Also include and method that returns a potential domain name by adding a www. at the beginning and .com at the end of the corporate name (for instance, if the corporate name is IBM, that method should return www.ibm.com). Write a client class to test all the methods in your class.

Answer 1

Source code of the program and its working are given below.Comments are also given along with the code for better understanding.Screen shot of the code and output are also attached.If find any difficulty, feel free to ask in comment section. Please do upvote the answer.Thank you.

Working of the code

• In Corporate class an instance variable corporateName is created
• A constructor is defined to initialize the variable
• getter and setter method are defined to get and set corporateName
• toString() of object class is overridden to print object variable values directly
• equals() method is overridden to check two object of Corporate class are equal or not
• A client class is designed, inside it two Corporate objects c1 and c2 are created
• setCorporateName() method is invoked to modify c1's name from Ibm to IBM
• objects values are directly printed
• domainNmae() method is invoked to find and print domain name of the objects
• equals() method is invoked to check c1 and c2 are equal or not

Source code

Corporate Class

public class Corporate {
    //declare instance variable corporateName
    private String corporateName;
    //constructor to initialize object
    public Corporate(String corporateName) {
        this.corporateName = corporateName;
    }

    //getter method to get the value of corporate name
    public String getCorporateName() {
        return corporateName;
    }
    //setter method to set the value of corporate name
    public void setCorporateName(String corporateName) {
        this.corporateName = corporateName;
    }

    //overriding toString() method
    @Override
    public String toString() {
        return "Corporate Name: "+corporateName;
    }

    //overriding equals() method
    @Override
    public boolean equals(Object obj) {
        //checking if an object is compared with itself or not
        if(obj==this)
            return true;
        //checking obj is not an instance of Corporate class or not
        if(!(obj instanceof Corporate))
            return false;
        //typecasting obj to Corporate type
        Corporate c=(Corporate)obj;
        //checking their corporateName equal
            return this.corporateName.equals(c.corporateName);
    }
    //method to get domain name
    public String domainNmae()
    {
        return "wwww."+corporateName.toLowerCase()+".com";
    }
}

Client class

public class Client {
    public static void main(String[] args) {
        //creating two corporate objects
        Corporate c1 = new Corporate("Ibm");
        Corporate c2 = new Corporate("Apple");
        //modifying Ibm to IBM
        c1.setCorporateName("IBM");
        //printing c1 object
        System.out.println(c1);
        //printing domain name of c1
        System.out.println("Domain name: " + c1.domainNmae());
        //printing c2 object
        System.out.println(c2);
        //printing domain name of c2
        System.out.println("Domain name: " + c2.domainNmae());
        //calling equals() method to check both c1 and c2 are equal or not
        System.out.println("Are " + c1.getCorporateName() + " and " + c2.getCorporateName() +
                " equal ? :" + c1.equals(c2));


    }
}

Screen shot of the code

Screen shot of the output