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natali 33 [55]
3 years ago
6

Assume that input file references a Scanner object that was used to open a file. Which of the following while loops shows the co

rrect way to read data from the file until the end of the file is reached?
a) while (inputFile != null)
b) while (!inputFile.EOF)
c) while (inputFile.hasnextInt())
d) while (inputFile.nextLine == " ")
Computers and Technology
1 answer:
12345 [234]3 years ago
4 0

Answer:

The correct answer to the following question is an option c) while (inputFile.hasnextInt()).

Explanation:

hasnextint() is the function of the scanner class which is "java.util.Scanner".

This method returns the boolean value so the data type of this method is boolean.

Integer values of radix are assumed only when a next token is in the Scanner input and it returns output True.

The other options are false because the input file can be null and the end of file is not equal to the input file and the next line is equal to the space and also the other options are not the object of the scanner class.

You might be interested in
Providing captions and transcripts for videos on your website is a way of ensuring what?.
Reil [10]

Answer:

Accessibility

Explanation:

Makes it easier for the users to watch

5 0
2 years ago
Write a function that will sum all of the numbers in a list, ignoring the non-numbers. The function should takes one parameter:
olasank [31]

In python 3.8:

def func(value_list):

   lst = [x for x in value_list if type(x) == int or type(x) == float]

   return sum(lst)

print(func(["h", "w", 32, 342.23, 'j']))

This is one solution using list comprehensions. I prefer this route because the code is concise.

def func(value_list):

   total = 0

   for x in value_list:

       if type(x) == int or type(x) == float:

           total += x

   return total

print(func(["h", "w", 32, 342.23, 'j']))

This is the way as described in your problem.

3 0
3 years ago
A manufacturer of machine tools creates a spreadsheet of tools and the cost for those. The spreadsheet has four fields: name of
iragen [17]

The question above has multiple answers:


<span>1.       </span>Sort the data in the field "name of the tool" in ascending order alphabetically.

<span>2.       </span> Sort the data in the field “number of tools” in ascending order.

<span>3.       </span>Sort the data in ascending order of cost per tool.

<span>4.       </span>Sort the data in ascending order of total cost.

The answer is 3. Sort the data in ascending order of cost per tool


You can always make your spreadsheet work a bit more organized by sorting your data. In this case, what is required from the manufacturer of the tools is to sort the data so that someone else is able to find out which tool costs the most. Basically, the price of the tool which is the highest is required to be known. Therefore, the manufacturer of the tools should Sort the data in ascending order of cost per tool.






3 0
3 years ago
You have just installed a SOHO router in a customer’s home and the owner has called you saying his son is complaining that Inter
emmainna [20.7K]

Answer: A. Verify the wireless connection is using the fastest wireless standard the router supports.

D. Enable QoS for the gaming applications on the router and on the son's computer.

Explanation: Verifying the wireless connection is using the fastest wireless standard the router supports will improve line of connectivity and reduce network latency hence gaming consoles communicate faster.

QoS enables the prioritizing of the volume of internet traffic on the console for high quality gaming. QoS will also enable more internet bandwidth to be channeled to the gaming console.

6 0
3 years ago
Which of the following statements is false? A.The concepts of icons, menus and windows were originally developed by Xerox PARC.
Fudgin [204]

Answer:

(b) Windows is an open source operating system (<em>This is not correct</em>)

Explanation:

Option a is <em>correct</em> because Xerox PARC(Palo Alto Research Center), which is a subsidiary of the Xerox corporation, has been greatly responsible for invention and development in modern computing devices. Some of these developments are in Ethernet and graphical user interface (making use of menus, icons e.t.c).

Option b is <em>not correct</em> because Windows Operating system is not an open source operating system. Open source OS means users can interact with the driving code of the OS and make modifications. Windows does not support this feature. Operating systems that are open source include Linux and OpenSolaris.

Option c is <em>correct</em>. An operating system has two main components - the kernel and the user interface. The core component of an operating system is the Kernel as it interacts directly with the hardware and manages system resources. The user interface on the other hand allows users to interact with the kernel of the operating system using texts and/or graphics as commands.

Option d is <em>correct</em>. Linux operating system is an open source OS. Therefore, the source code is made available to the public for examination and modification.

8 0
3 years ago
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