Question

In: Computer Science

JAVA, this is practice to better understand java. //Please note throughout if possible looking to better...

JAVA, this is practice to better understand java.
//Please note throughout if possible looking to better understand the process.

Write the following class: Person.
Define Class Person
Write the class header

Class Variables
Class Person is to have the following data members: firstName of type String, lastName of type String representing a person’s first and last names and ssn of type int representing a social security number. Each data member has an access specifier of type private.

Constructors
Class Person is to have two constructors with the following specifications:
1. a no-arg constructor that initializes each String to an empty String and the integer data member to zero;
2. a constructor that takes three arguments, each representing one of the class data members. The arguments are to be listed in the order of (firstName, lastName, ssn);

Get and Set Methods
Class Person is to have standard get/set methods for each data member.

Method Overrides
Class Person is to override the Object equals( ) method to do the following:

1. test to see if the parameter represents an object;
2. test to see if the parameter object is of the same class type as the calling object;
3. determine if the calling object and the parameter object store identical data values for the corresponding data members.

Class Person is to override the Object toString( ) method to display the following information in the format presented:
1. First Name: display firstName data
2. Last Name: display lastName data
3. SSN: display ssn data

Solutions

Expert Solution

Please find the class definition below:

class Person {
        private String firstName;
        private String lastName;
        private int ssn;

        public Person() {
                this.firstName = "";
                this.lastName = "";
                this.ssn = 0;
        }

        public Person(String firstName, String lastName, int ssn) {
                super();
                this.firstName = firstName;
                this.lastName = lastName;
                this.ssn = ssn;
        }

        public String getFirstName() {
                return firstName;
        }

        public void setFirstName(String firstName) {
                this.firstName = firstName;
        }

        public String getLastName() {
                return lastName;
        }

        public void setLastName(String lastName) {
                this.lastName = lastName;
        }

        public int getSsn() {
                return ssn;
        }

        public void setSsn(int ssn) {
                this.ssn = ssn;
        }

        @Override
        public String toString() {
                return "Person [firstName=" + firstName + ", lastName=" + lastName + ", ssn=" + ssn + "]";
        }

        @Override
        public boolean equals(Object o) {
                if (o == this) {
                        return true;
                }


                if (!(o instanceof Person)) {
                        return false;
                }

                Person p = (Person) o;

                // Compare the data members and return accordingly
                if (p.getFirstName().equals(this.getFirstName()) && p.getLastName().equals(this.getLastName())
                                && p.getSsn() == this.getSsn()) {
                        return true;
                } else {
                        return false;
                }
        }

}

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