An individual finds himself infected by a previously undiscovered pathogen, Transmissio.

Mention through what conduit soluble or mobile immune factors reach and interact with the pathogen.

How shape and size of soil particles influence the properties of soil? Justify your answer with appropriate examples. (Mention minimum two properties and corresponding justifications)

 (a) What are the negative health implication of metals in a structure/building? (b) Mention and briefly explain five (5) famous structure/building that was constructed using steel.

Abstract Algebra

Let n ≥ 2. Show that S_n is generated by each of the following sets.

(a) S₁ = {(1, 2), (1, 2, 3), (1, 2, 3, 4), ..., (1, 2, 3,..., n)}

(b) S₂ = {(1, 2, 3, ..., n-1), (1, 2, 3, ..., n)}

I am a bit confused on this T/F question. Please provide an explanation. I said T.

1. The "this" keyword is meaningful only within instance methods.

The options are

Generics

Interfaces

Classes

Fields

Methods

{{{{{{{{I chose interface}}}}}}}}}}

2. Abstract data types are expressed as which of these in Java;

#1 a. When to use an Interface vs when to use an abstract class. For each “when” provide extended example(s) (with class/interface codes). b. Suppose you have an interface Moveable. Think of some interface that can extend it. Implement this two interfaces. (java oop)-> laboratory work

Chapter 9 Programming Project (Inheritance, Abstract Class/Methods, Overriding Methods)

-For all classes, you need to provide the accessor and mutator methods for all instance variables, and provide/override the toString methods.

-Create a Customer class that has the attributes of name and age. Provide a method named importanceLevel. Based on the requirements below, I would make this method abstract.

-Extend Customer to two subclasses: FlightCustomer, and RetailCustomer

-FlightCustomer attributes: ticketPrice, seatNumber (The seat number should be a randomly generated number between 1 to 200)

-RetailCustomer attributes: itemsPurchased, totalSpent.

-For both FlighCustomer and RetailCustomer, you need to provide the implementation for the importanceLevel method. There are four levels: gold, silver, bronze, regular. For FlighCustomer, the level is based on the ticketPrice; for RetailCustomer, the level is based on the average price of each item.

-Instantiate three Customers for each class (six allotter) and tests ALL methods in a meaningful/informative way.

-Programming Language is Java