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Readme [11.4K]
3 years ago
8

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

Computers and Technology
1 answer:
mojhsa [17]3 years ago
8 0

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.

<u></u>

<u>Abstract method declaration</u>

             

         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.

<u>Example</u>

public abstract class GraphicObject {

  // declaring fields

  // declaring non-abstract methods

  abstract void draw();

}

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2 negative impact of excessive use of computer even in solving mathematical problem.
zlopas [31]

Answer:

Computers are now a days the very important part of each department as well as homes. All people are somehow using computers for their respective needs. As technology always has the negative impacts along with the positive ones so, computer do have some crucial points when taking about students specially.

Following are listed some acts that add to the negativity of computer's usage.

  • Excess use of computers by students while solving mathematical problems lead them to rely totally on the computer. Students don't tend to calculate by their own instead they use computerized calculators for their ease and hence they start lacking even in basic calculations in normal routine also.
  • Computers may impact students routine in such a way that they don't concentrate on their studies while having extreme interest in video games and their favorite seasons and other activities.
  • Using computers more than a certain limit effects eyesight badly. This is the reason today most of the teenagers use spectacles in normal routine.

<h3>I hope it will help you! </h3>
4 0
3 years ago
Give a pseudo-code description of the O(n)-time algorithm for computing the power function p(x,n).Also draw the trace of computi
laila [671]

Answer:

p(x,n)

1. if(n==0)    [if power is 0]

2.    then result =1.

3.else

4. {    result=1.

5.      for i=1 to n.

6.          {  result = result * x. }  [each time we multiply x once]

7.       return result.

8.  }

Let's count p(3,3)

3\neq0, so come to else part.

i=1: result = result *3 = 3

i=2: result = result *3 = 9

i=2: result = result *3 = 27

Explanation:

here the for loop at step 4 takes O(n) time and other steps take constant time. So overall time complexity = O(n)

6 0
3 years ago
Nadia's productivity at work is being hurt due to the large quantity of unwanted e-mail she receives. What steps can she take to
anastassius [24]

Answer:

Hi,

The best option in the list is <u>stop posting her e-mail address on newsgroups.</u>

Explanation:

Unwanted e-mail is categorized as a spam email.These emails can not be entirely avoided because we use the Internet thus it is recommended that you filter them.A program called my email client can help to filter spam though in some cases, it might not be effective.

The techniques Nadia can employ in this case is to hidden her email address when visiting newsgroups.News groups are forums online where people discuss certain topic.Avoid publishing the email in these web sites can hide her tackle this problem. Additionally, Nadia could train the filter serach feature in her email box through repoting such emails using the report button present, avoid responding/openning spam  or use a third party program to track spam emails and block them.

Wish you Luck!

8 0
3 years ago
What is a limitation of 5G mmWave, despite its high speed?
Allushta [10]

The limitation of 5G mmWave, despite its high speed, is the fact that they have a short range.

  • 5G simply means the fifth generation of wireless technology that has great speed and provides connectivity to cellphones.

  • mmWave is the higher frequency radio band that is very fast. It should be noted that the 5G mmWave is super fast and is being used by large organizations to improve their work.

  • The main limitation of 5G mmWave is that for one to use it, one has to be close to the 5G tower. This is why it's hard for people living in rural areas to benefit from it unless it's situated close to them.

  • It should be noted that despite the fact 5G offers greater bandwidth, which is vital in relieving network congestion, there are still more improvements to be made in order for everyone to benefit.

In conclusion, the limitation of 5G mmWave, is that they have a short range.

Read related link on:

brainly.com/question/24664177

6 0
1 year ago
Imagine that a crime has been committed and being a police officer you have to investigate the case. Solving a crime can be a ve
Igoryamba

Explanation:

On October 31, around twelve o'clock at night, the lights were dull. It was Siberian cold and I was walking painfully under the whitish lighting of a lamppost and the retro neon lights of a convenience store in a neighborhood that was buzzing when I went to buy meat. buildings, grayish in this half-light, crumbled under the weight of sleep, while the neighborhood was still open. Its decoration was particularly macabre in tone: synthetic but very sticky spider webs adorned the porches of the terraces, pumpkin ornaments are exhibited like works of art, ... Some pushed the macabre by hanging mannequins made up in corpses. At the entrance to the neighborhood, I found the body of its owner stabbed. Frozen in place, I wondered what else awaits me. My heart was pounding, feeling a shiver of anguish. When I was removing the phone from my pocket to call my police friends, my hands were clenched in fear. An investigation was carried out to find out the causes of death. Also, I went with them so they take my words. Hopefully the murderer will be arrested to put an end to this sybilinous crime.

4 0
2 years ago
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