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Leokris [45]
2 years ago
14

What does the shell of an operating system do

Computers and Technology
1 answer:
Andre45 [30]2 years ago
8 0

The OS shell allows access to the operating system services

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Write code to take a String input from the user, then print the first and last letters of the string on one line. Sample run: En
Ainat [17]
<h2>Answer:</h2>

//import the Scanner class to allow for user input

import java.util.Scanner;

//Begin class definition

public class FirstAndLast{

   //Begin the main method

    public static void main(String []args){

       

       

       //****create an object of the Scanner class.

       //Call the object 'input' to receive user's input

       //from the console.

       Scanner input = new Scanner(System.in);

       

       //****create a prompt to tell the user what to do.

       System.out.println("Enter the string");

       

       //****receive the user's input

       //And store it in a String variable called 'str'

       String str =  input.next();

       

       //****get and print the first character.

       //substring(0, 1) - means get all the characters starting

       //from the lower bound (index 0) up to, but not including the upper

       //bound(index 1).

       //That technically means the first character.

       System.out.print(str.substring(0,1));

       

       //****get and print the last character

       //1. str.length() will return the number of character in the string 'str'.

       //This is also the length of the string

       //2. substring(str.length() - 1) - means get all the characters starting

       // from index that is one less than the length of the string to the last

       // index (since an upper bound is not specified).

       // This technically means the last character.

       System.out.print(str.substring(str.length()-1));

       

       

       

    }  // end of main method

   

} //end of class definition

<h2>Explanation:</h2>

The code has been written in Java and it contains comments explaining important parts of the code. Kindly go through the comments.

The source code and a sample output have also been attached to this response.

To run this program, copy the code in the source code inside a Java IDE or editor and save it as FirstAndLast.java

Download java
<span class="sg-text sg-text--link sg-text--bold sg-text--link-disabled sg-text--blue-dark"> java </span>
4c53f66d970acf88b251b2cf41bcdaf6.png
3 0
2 years ago
What special enterprise VPN supported by Cisco devices creates VPN tunnels between branch locations as needed rather than requir
castortr0y [4]

Answer:

Dynamic Multipoint VPN

Explanation:

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Applying what formatting option to your excel workbook will make it easier to read when printed out?
blagie [28]
Portrait, as well as 100 percent scale.
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25) _____ involves assigning numbers or other symbols to answers so that the responses can be grouped into a limited number of c
Hitman42 [59]
B- The answer is "Data entry".
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Write a program that will ask user to enter your name and count number of character ?
Svet_ta [14]

Answer:

672

Explanation:

because

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