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Pavel [41]
3 years ago
13

Define file manager

Computers and Technology
1 answer:
Mama L [17]3 years ago
3 0

Answer:

A file manager or file browser is a computer program that provides a user interface to manage files and folders.

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Which of the following class definition defines a legal abstract class Group of answer choices public class Rectangle abstract {
valkas [14]
<h2>Question</h2>

Which of the following class definition defines a legal abstract class Group of answer choices

(a)

public class Rectangle abstract {

   public abstract double findArea ( );

   

}

(b)

public abstract class Rectangle {

   public abstract double findArea ( );

   

}

(c)

public class Rectangle {

   public abstract double findArea ( );

   

}

(d)

public class abstract Rectangle {

   public abstract double findArea ( );

   

}

<h2>Answer:</h2>

(b)

public abstract class Rectangle {

   public abstract double findArea ( );

}

<h2>Explanation:</h2>

When a class is declared with the abstract keyword, the class is called an abstract class. Abstract classes cannot be instantiated and may include one or more abstract methods. If a class contains an abstract method, then it (the class) must be declared abstract.

In Java, abstract classes are defined using the following format:

<em>[access_modifier]</em> abstract class <em>[name_of_class]</em>

[access_modifier] specifies the access modifier of the class which could be public, private, e.t.c

abstract is the keyword that specifies that the class is an abstract class.

class is a keyword used for defining classes

name_of_class specifies the name of the class.

The only option that fulfils this format is <em>option b</em> where;

(i) The access modifier is public

(ii) The name of the class is Rectangle

Option a is not correct because the <em>abstract</em> keyword is supposed to come before the <em>class</em> keyword.

Option c is not correct because the keyword <em>abstract</em> is missing. In other words, the class must be declared abstract since it contains abstract method findArea();

Option d is not correct because the <em>abstract</em> keyword is supposed to come before the <em>class</em> keyword.

7 0
3 years ago
Please help me with Excel!!! A lot of points!
yaroslaw [1]

Answer:

=((SUM(PUT RANGE OF MOTHLY EXPENSES HERE)*12)+SUM(PUT RANGE OF YEARLY EXPENSES HERE))/12

Explanation:

Adds all of the Monthly Expenses : SUM(PUT RANGE OF MOTHLY EXPENSES HERE)

Multiplies the result by 12: *12

Then adds all of the Yearly Expenses to the product of Steps 1 and 2 : SUM(PUT RANGE OF YEARLY EXPENSES HERE)

Divides this new sum by 12: /12

=((SUM(PUT RANGE OF MOTHLY EXPENSES HERE)*12)+SUM(PUT RANGE OF YEARLY EXPENSES HERE)/12)

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3 years ago
An online supermarket wants to update its item rates during the sales season. They want to show the earlier rates too but with a
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Cheaper elements gives a strike through appearence
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Read 2 more answers
Someone help me out eh?
Elodia [21]

Line 4

It should be font-size: 15px

Also there should be curly braces in line 5.

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At which stage should James, a website designer, gather information about the website he wants to create, and at which stage sho
viva [34]
<h2>Answer: James should gather information in the <u><em>Learning</em></u> phase and begin the site’s coding in the <u><em>Development</em></u> phase.</h2>

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