Question

1. Write this code using Python and create a UML diagram to represent the relationship visually. Run the code to answer the following questions:

a. What is the output of this code?
b. Can a HumanResourceManager access the_str_function from the employee class in one of its functions?
c. Can a Project Manager access the _str_function from the employee class in one of its functions?
d. What is the difference between HRM and PM objects in terms of their relationship with the Employee? (Aggregation or Composition)
e. What happened to the Employee class object when we used del PM in this code?
f. Uncomment del HRM. Explain what happened and why?

Answer 1

In this Python code, we have a parent Employee class with a private method. The subclasses, HumanResourceManager and ProjectManager, inherit from the Employee class and cannot access the private method. The relationships between the HRM and PM objects with the Employee class are inheritance. When we use the 'del' keyword, the objects are deleted from memory and their allocated resources are released.

Step-by-step explanation:

In the provided code, we have a Employee class with a _str_function method, which is a private method denoted by the single underscore.

The HumanResourceManager and ProjectManager classes are derived from the Employee class, so they inherit all of its attributes and methods.

a. The output of the code will be 'Employee Name: John Doe'.

b. No, a HumanResourceManager cannot access the _str_function from the Employee class, as it is a private method.

c. No, a ProjectManager also cannot access the _str_function from the Employee class due to its private nature.

d. The relationship between HRM and PM objects with the Employee class is inheritance - they inherit the properties and methods of the Employee class.

e. When we used del PM, the Project Manager object was deleted from memory, releasing the allocated resources.

f. Uncommenting del HRM would delete the Human Resource Manager object and release its allocated resources.