Consider the following static method.
1 answer:
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Answer:
See explaination
Explanation:
Clearly the entities are as follows:-
Course
Section
Room
Test
The relationship among entities are as follows:-
Course has Section
Test is conducted for Course
Test is conducted in Section
Test is conducted in Room
Attributes of each entities are as follows:-
Course (CourseID, Name, Department)
Section (SectionID, Enrollment)
Room (RoomNumber, Capacity, Building)
Test (Time)
Section is a week entity as, there may be same sections for different courses, therefore section uses the primary key of course entity as foreign key.
Also entity Test is dependent upon the entities Room,Section and Course, therefore primary keys of these entities will be used as foreign key in the Test entity.
Check attachment for the ER diagram
Answer:
Explanation:
The following code is written in Java. It creates the three classes as requested with the correct constructors, and getter/setter methods. Then the test class asks the user for all the information and creates the customer object, finally printing out that information from the object getter methods.
import java.util.Scanner;
class Person {
String name, address, telephone;
private void Person (String name, String address, String telephone) {
this.name = name;
this.address = address;
this.telephone = telephone;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getTelephone() {
return telephone;
}
public void setTelephone(String telephone) {
this.telephone = telephone;
}
}
class Customer extends Person {
String customerNumber;
Boolean mailingList;
public Customer(String s, Boolean mail) {
super();
this.customerNumber = customerNumber;
this.mailingList = mailingList;
}
public String getCustomerNumber() {
return customerNumber;
}
public void setCustomerNumber(String customerNumber) {
this.customerNumber = customerNumber;
}
public Boolean getMailingList() {
return mailingList;
}
public void setMailingList(Boolean mailingList) {
this.mailingList = mailingList;
}
}
class Test {
public static void main(final String[] args) {
Scanner in = new Scanner(System.in);
System.out.println("Enter Customer Name: ");
String name = in.nextLine();
System.out.println("Enter Customer Address: ");
String address = in.nextLine();
System.out.println("Enter Customer Telephone: ");
String telephone = in.nextLine();
System.out.println("Would you like to receive mail? y/n ");
Boolean mail;
if(in.nextLine() == "y") {
mail = true;
} else {
mail = false;
}
Customer customer = new Customer("1", mail);
customer.setName(name);
customer.setAddress(address);
customer.setTelephone(telephone);
System.out.println("Name: " + customer.getName());
System.out.println("Address: " + customer.getAddress());
System.out.println("Telephone: " + customer.getTelephone());
System.out.println("Wants to receive mail: " + String.valueOf(customer.getMailingList()));
}
}
