Java class Person for dealing with persons.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Write a Java class Person for dealing with persons. Your class must have the following features:
In Lab
Q1)
1. Write a Java class Person for dealing with persons. Your class must have the
following features:
Person
id: long
name: String
gender: String
+ Person()
+ Person (id: long, name: String, gender: String)
Create setter and getter for all data fields.
+ Override toString() method: you have to return required data Fields
values.
• Constructor:
o public Person(): A default constructor, should initialize the data fields to their
default values.
o public Person (SSN: long, name: String, gender: String): A constructor with
parameters, that creates the person object by setting specified parameters.
Instance methods:
o
public void setName(name: String): Used to set the full name of the person.
public void setGender(gender: String): Used to set the gender of the person.
o public long getId(): This method returns the id of the person.
o
o
public String getGender(): This method returns the gender of the person.
o public String getName(): This method returns the full name of the person.
o public String toString(): This method allows the person's info to be easily printed
out on the screen.
Invoice
id: int
customer: Person
amount: double
+ Invoice()
+ Invoice(id: int, customer: Person, amount: double)
+ Invoice (id: int, amount: double)
Create setter and getter for all data fields.
setDiscount(discount: int): void
+ Override toString method: you have to return required data Fields
values.
Constructor:
.
o public Invoice(): A default constructor, should initialize the data fields to their
default values.
o
public Invoice(id: long, customer: Person, amount: double): A constructor with
parameters, that creates the invoice object by setting specified parameters.
o public Invoice (id: long, amount: double): A constructor with parameters, that
creates the invoice object by setting specified parameters.
Note: id should be incremented automatically.
Instance methods:
public void setCustomer/customer: Person): Used to set the customer information
Transcribed Image Text:In Lab Q1) 1. Write a Java class Person for dealing with persons. Your class must have the following features: Person id: long name: String gender: String + Person() + Person (id: long, name: String, gender: String) Create setter and getter for all data fields. + Override toString() method: you have to return required data Fields values. • Constructor: o public Person(): A default constructor, should initialize the data fields to their default values. o public Person (SSN: long, name: String, gender: String): A constructor with parameters, that creates the person object by setting specified parameters. Instance methods: o public void setName(name: String): Used to set the full name of the person. public void setGender(gender: String): Used to set the gender of the person. o public long getId(): This method returns the id of the person. o o public String getGender(): This method returns the gender of the person. o public String getName(): This method returns the full name of the person. o public String toString(): This method allows the person's info to be easily printed out on the screen. Invoice id: int customer: Person amount: double + Invoice() + Invoice(id: int, customer: Person, amount: double) + Invoice (id: int, amount: double) Create setter and getter for all data fields. setDiscount(discount: int): void + Override toString method: you have to return required data Fields values. Constructor: . o public Invoice(): A default constructor, should initialize the data fields to their default values. o public Invoice(id: long, customer: Person, amount: double): A constructor with parameters, that creates the invoice object by setting specified parameters. o public Invoice (id: long, amount: double): A constructor with parameters, that creates the invoice object by setting specified parameters. Note: id should be incremented automatically. Instance methods: public void setCustomer/customer: Person): Used to set the customer information
• Constructor:
o public Person(): A default constructor, should initialize the data fields to their
default values.
o public Person (SSN: long, name: String, gender: String): A constructor with
parameters, that creates the person object by setting specified parameters.
• Instance methods:
o public void setName(name: String): Used to set the full name of the person.
o public void setGender(gender: String): Used to set the gender of the person.
o public long getId(): This method returns the id of the person.
o public String getGender(): This method returns the gender of the person.
o public String getName(): This method returns the full name of the person.
o public String toString(): This method allows the person's info to be easily printed
out on the screen.
Invoice
id: int
customer: Person
amount: double
+ Invoice()
+ Invoice(id: int, customer: Person, amount: double)
+ Invoice(id: int, amount: double)
+ Create setter and getter for all data fields.
+ set Discount(discount: int): void
+ Override toString method: you have to return required data Fields
values.
Constructor:
o public Invoice(): A default constructor, should initialize the data fields to their
default values.
o
public Invoice(id: long, customer: Person, amount: double): A constructor with
parameters, that creates the invoice object by setting specified parameters.
o public Invoice(id: long, amount: double): A constructor with parameters, that
creates the invoice object by setting specified parameters.
Note: id should be incremented automatically.
• Instance methods:
o public void setCustomer(customer: Person): Used to set the customer information
of the invoice.
o public void setAmount(amount: double): Used to set the amount of the invoice.
o public int getId(): This method returns the id of the invoice.
o public Person getCustomer(): This method returns the customer information.
0 public double getAmount(): This method returns the amount of the invoice.
o public void setDiscount(discount: int): This method calculates the amount after
the discount
o public String toString(): This method allows the invoice info to be easily printed
out to the screen.
2. Create a java Main Class file then do the following:
* Declare an array allInvoices of Invoice class with size 3
* Declare an array all Persons of Person class with size 3.
Transcribed Image Text:• Constructor: o public Person(): A default constructor, should initialize the data fields to their default values. o public Person (SSN: long, name: String, gender: String): A constructor with parameters, that creates the person object by setting specified parameters. • Instance methods: o public void setName(name: String): Used to set the full name of the person. o public void setGender(gender: String): Used to set the gender of the person. o public long getId(): This method returns the id of the person. o public String getGender(): This method returns the gender of the person. o public String getName(): This method returns the full name of the person. o public String toString(): This method allows the person's info to be easily printed out on the screen. Invoice id: int customer: Person amount: double + Invoice() + Invoice(id: int, customer: Person, amount: double) + Invoice(id: int, amount: double) + Create setter and getter for all data fields. + set Discount(discount: int): void + Override toString method: you have to return required data Fields values. Constructor: o public Invoice(): A default constructor, should initialize the data fields to their default values. o public Invoice(id: long, customer: Person, amount: double): A constructor with parameters, that creates the invoice object by setting specified parameters. o public Invoice(id: long, amount: double): A constructor with parameters, that creates the invoice object by setting specified parameters. Note: id should be incremented automatically. • Instance methods: o public void setCustomer(customer: Person): Used to set the customer information of the invoice. o public void setAmount(amount: double): Used to set the amount of the invoice. o public int getId(): This method returns the id of the invoice. o public Person getCustomer(): This method returns the customer information. 0 public double getAmount(): This method returns the amount of the invoice. o public void setDiscount(discount: int): This method calculates the amount after the discount o public String toString(): This method allows the invoice info to be easily printed out to the screen. 2. Create a java Main Class file then do the following: * Declare an array allInvoices of Invoice class with size 3 * Declare an array all Persons of Person class with size 3.
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