Question

Open Visual Paradigm for UML.

File | New Project. Set the Project name to {FLname}MyCompanyDesign, where {FLname} is replaced by the first letter of your first name plus your last name. E.g. if your name is Maria Marciano, your project name must be MMarcianoMyCompanyDesign. Click the Create Blank Project button.

Save the .vpp file in the root of your Eclipse project directory.

File | Save As...

Use the ... button to navigate to the root of your Eclipse project directory.

Click OK.

Create the class diagram

File | New Diagram | UML Diagrams | Class Diagram.

Click the Class tool: . Drag out a rectangle in the diagram panel. Set the new class' name to Company.

Class Class Generalization

Add the following properties (attributes) and method (operation):Properties (right-click on the Company class in the diagram, then select Add| Attribute)

name:String
location:String

Public Method(right-click, then Add | Operation)

payEmployees

Use a gradient background style:

Right-click on the class, Styles and Formatting | Formats...

Click the background tab.

Select gradient.

Select Mint Blue.

Click OK.

Your class diagram should look something like this:

Add an Employee class that has three properties:

lastName:String

firstName:String

jobTitle:String

Set the background style to be the same as that for Company, but with the Golden gradient.

Create an association that indicates that a Company has zero or more Employees.

Click on the Association tool: .

Drag from the Company class to the Employee class.

Although the focus is probably now in a text entry for the name of the association, don't give it a name.

Instead, click elsewhere on the association line to select it.

Go to the Property view. Under Role A, scroll down to the Navigable property and set it to false. This should make the Company end of the association not-navigable, but the Employee end is still navigable (has an arrowhead).

Scroll down to Role B and set the name to employees.

Scroll further down in Role B to its Multiplicity property. Set this to *.

At this point, your diagram should look something like this:
$Company_and_Employee.png$

Create two more classes near the bottom of the diagram:

Grunt, with a public method called doWork.

Manager, with a public method called takeVacation.

Style them like Employee.

Have the Manager and Grunt inherit from Employee:

Click on the Generalization tool, $Generalization_Tool.png$ , then drag from Employee to Grunt. In English we can say that a Grunt "is an" Employee.

Use the Generalization tool again to make Manager inherit from Employee.

At this point your diagram should look something like this:

$Grunt_and_Manager_Added.png$

Generate source code:

Tools | Instant Generator | Java...

Check {FLname}MyCompanyDesign, which should check all four of your classes under it.

Clear the attribute and parameter prefixes.

Uncheck "Generate Ant build file".

Set the Association Implementation to ArrayList.

Set the Output path to the src directory of your Eclipse project.

Click Generate, then Close.

In Eclipse, have a look at the new source code files:

In the Package Explorer, expand the project, the src dir, and its default package. Double-click on Company.java, and browse the code that has been generated. Notice, in particular, that an ArrayList<Employee> called employees has been added. This is the code that corresponds to the arrow (open arrow head) from Company to Employee. Its type is List because we set the multiplicity to * (meaning many). If the multiplicity had been left at 1, then the type would have been Employee, and we would have named the variable something like employee.

Double-click on Grunt.java. Notice that it "extends Employee". This is the code that corresponds to the arrow (closed arrow head) from Grunt to Employee.

Add getters and setters for the attributes of your classes:

Open Company.java in the editor, right-click inside of the class | Source | Generate getters and setters....

Check all of the variables.

Click OK.

Notice that getters and setters have been added to Company.

Add a constructor using the attributes:

In Company.java, right-click inside of the class | Source | Generate Constructor Using Fields....

Check all of the variables.

Click OK.

Notice that a constructor has been added that allows a caller to construct a Company and initialize its attributes.

Repeat the addition of getters, setters, and a constructor for Employee.

Answer 1

Please find the answer in the screenshots:-

"import java.util.ArrayList: public class company { public string name: public string location: public company (String name , String location) { super (): this.name = name: this.location = location: } public void payEmployess (double salary) { double basesalary: if (salary > = 4000) basesalary = salary: else throw new illegalArguementException (""Weekly salary must be > = 4000"") } public String getName () { return name: } public void setName (String name) { this.name = name: } public String getLocation () { return location: } } public void setLocation (String location) { this.location = location: } public ststic void main (String [] args) { Company c = new Company (""MyCompany"" , ""Denver""): Employee e = new Employee (""Harry"" , ""Gomez"" , ""Java Developer""): Employee e_1 = e_1 = new employee (""Marcus"" , ""Dell"" , ""Manager""): Employee e_2 = new Employee (""Nargis"" , ""Gupta"", ""Grunt""): ArrayList < Employee > emp = new ArrayList < Employee > (): ArrayList < Company > comp = new ArrayList < Company > (): comp.add(c): for (Company company: comp) System.out.println (""Company Name: "" + company.name + ""Location of the company: "" + company.location): emp.add (e): emp.add (e1): emp.add (e2);: for (Employee employee: emp) System.out.println (""First Name"" + employee.firstName + ""Second Namec: "" + employee.lastName + ""Job Title: "" + employee.JobTitle): public class Employee {"