Answer:
I. The class methods and instance methods of one class may call the public class methods of another class using dot notation and referencing the name of the other class.
Explanation:
Private methods are being accessed from only within the class or scope specified. No other means of accessibility is possible, and even through inheritance. And instance methods can never call without using dot notation, any of the class method of the same class. Hence second and third options are not correct. And the class method and the instance methods of one class may call the public class methods of another class using the dot notation and referencing the name of the other class. Hence, the correct option is the first one.
Answer:Sequence diagrams
Explanation: Sequence diagram is the diagram that displays about the connection of the objects in a sequential manner. The sequence depicted through the vertical lines in parallel form was about the object function and the horizontal line showed interaction between them for the exchange of the information.
Other options are incorrect because structural models have the infrastructure in particular format, communication diagrams depicts the exchange of information through communication and class diagram is the diagram that displays the system's class.Thus the correct option is sequence diagram.
Answer:
They are connected through networks
Explanation:
N/A
A feature which is a good conferencing tool to use with other people who are located elsewhere or even in a different location is known as video communications.
<h3>What is communication?</h3>
Communication refers to a process which involves the transfer of information from one person (sender) to another (receiver), especially through the use of semiotics, symbols, signs and network channel.
In this context, video communications is a feature which is a good conferencing tool to use with other people who are located elsewhere or even in a different location because it provides an image of the person in real-time.
Read more on communication here: brainly.com/question/26152499
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Answer:
The program in Java is as follows:
import java.util.Scanner;
public class Main{
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
float a, b, c, x, y;
a = input.nextFloat();
b = input.nextFloat();
c = input.nextFloat();
x = input.nextFloat();
y = a * x * x + b * x + c;
System.out.print(y); }}
Explanation:
This declares all variables
float a, b, c, x, y;
The next 4 lines get input for a, b, c and x
<em> a = input.nextFloat();</em>
<em> b = input.nextFloat();</em>
<em> c = input.nextFloat();</em>
<em> x = input.nextFloat();</em>
This calculates the value of y using 
This prints the calculated value of y
System.out.print(y);
