if(Expression to be tested) {
code to execute
} else if(Expression to be tested) {
code to execute
}
you can have as many else ifs as you want. But that's what it looks like.
Answer:
Mouse - USB
Monitor - display port, HDMI, and thunderbolt port
External hard drive - USB and thunderbolt port
Flash drive - USB
Explanation:
A computer mouse is an input device used to interact with a computer system. It connects with the computer through the USB port.
A Monitor is an output device that is used to display information on a computer system. It can be connected to the system through the display ports, HDMI, and the thunder port.
The External hard drive is a storage device that holds data for a long period of time. It has adapters to connect to the computer through the USB ports or thunderbolt ports. The flash drive is similar in function to the hard drive but small in size and storage space. It only connects with the computer through USB ports.
Answer: Null Object pattern be useful when the absence of an object can be encapsulated by other alternatives which does not have any have any effect.
Explanation:
public interface Rectangle {
double area();
double surfaceare();
boolean isNull();
}
In the code above we have a function for null object. So in the absence of an object we have encapsulated with a method of null which does not do anything. It simplifies the use of dependencies that can be undefined.
In case of collaborator the NULL object pattern makes use of the existing collaboration instead of defining a new one.
It also enable to abstract the handling of null objects from the client so that internal details of the program are not know to outsiders.
Three main parts of a professional cover letter: Heading, body, closing and signature line. I hope this helps! :)
