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3 years ago

2 What Java keyword is used to create a subclass? interface. extends. implements. inherits.

Computers and Technology

1 answer:

n200080 [17]3 years ago

5 0

Answer:

extends

Explanation:

When you create a subclass, you basically say "I'm creating a new class, but for now it will look and behave the same as that other class", then you add its own personality.

The syntax is:

class SubClass extends SuperClass

Where SubClass is your new subclass what inherits methods and variables from the SuperClass.

So, if you add nothing to the SubClass, it will be a carbon copy of the SuperClass. But you can add methods and variables exclusive to this SubClass that the SuperClass won't have.

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URGENT!!! Which statement is true with regard to bitmap images?

liberstina [14]

Answer:

D. You can modify colors easily and quickly.

Explanation:

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3 years ago

Read 2 more answers

What piece of hardware directs traffic between the connected devices when two LAN's are communicating across the Internet?

luda_lava [24]

Answer:

The correct answer is "Router".

Explanation:

In networking, routers is one of the main hardware which is used to direct the data traffic on a LAN system.

The router also works as an interconnection system for two or more than two networks. Routers mostly work between the internet and computer which directs the data to its right path.

It works between the computer system in a premise to make the networking possible through a LAN by using switches for communication between two or more than two devices in a LAN across the internet.

Hence, the most appropriate answer is the router.

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3 years ago

The development of various technologies led to many historic events. Use information from the Internet to describe one major his

kati45 [8]

Answer:

The Compass

Explanation:

The compass was one of the foremost technological inventions that forever changed sea navigation.

Before its invention, sailors used landmarks to navigate and when it got dark, they had to stop and wait for daybreak before resuming their journey. Some other people used the inaccurate means of the sun and stars to navigate at sea.

But with the invention of the compass, all these problems were a thing of the past because the compass could provide direction despite the weather or time of the day and as a result, it opened more trade routes and assisted in the Age of Discovery.

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3 years ago

Image files contain metadata. Give three examples of this. 1. 2. 3.

Elina [12.6K]

Answer:

Explanation:

We can add some metadata to an image or with some cameras when we take a photograph the camera gives some metadata to the image, for example, the camera brand, ISO, aperture, and shutter speed.

An image regularly has some metadata by default like dimensions, weight, and height.

We can sell photos on the internet, and we can add some keywords, description, and titles.

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4 years ago

In Java an abstract class cannot be sub-classed ?? True ?? False

mojhsa [17]

Answer:

False

Explanation:

An abstract class is a class declared abstract — it may or may not include abstract techniques. It is not possible to instantiate abstract classes, but they can be sub-classed.

Abstract method declaration

abstract void moveTo(double X, double Y);

Usually the subclass offers solutions for all of the abstract techniques in its parent class when an abstract class is sub-classed. If not, however, the subclass must be declared abstract as well.

Example

public abstract class GraphicObject {

// declaring fields

// declaring non-abstract methods

abstract void draw();

}

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4 years ago