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2 years ago

What is the correct term for files copied to a secondary location for preservation purposes?.

Computers and Technology

1 answer:

Volgvan2 years ago

3 0

The correct term for files copied to a secondary location for preservation purposes is backup.

<h3>What is a Backup?</h3>

This refers to the movement of files from one location to another for storage purposes.

Hence, we can see that this is done in order to preserve the files so that should the first memory location get compromised, it can be easily retrieved and this helps to prevent data loss.

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3 years ago

In this exercise you will debug the code which has been provided in the starter file. The code is intended to take two strings,

vampirchik [111]

Answer:

Here is the corrected program:

import java.util.Scanner; //to accept input from user

public class 02_14_Activity_one { //class name

public static void main(String[] args) { //start of main method

Scanner scan = new Scanner(System.in); //creates Scanner class object

System.out.println("Enter first string"); //prompts user to enter first string

String s1 = scan.nextLine(); //reads input string from user

System.out.println("Enter second string"); //prompts user to enter second string

String s2 = scan.nextLine(); //reads second input string from user

System.out.println("Enter number of letters from each word"); //enter n

int n = scan.nextInt(); //reads value of integer n from user

System.out.println(s1.substring(0,n) + s2.substring(s2.length() - n ));

} } //uses substring method to print a string made up of the first n letters of s1 and the last n letters of s2.

Explanation:

The errors were:

Scanner scan = Scanner(System.in);

Here new keyword is missing to create object scan of Scanner class.

Corrected statement:

Scanner scan = new Scanner(System.in);

String s1 = nextLine();

Here object scan is missing to call nextLine() method of class Scanner

Corrected statement:

String s1 = scan.nextLine();

String s2 = Scanner.nextLine();

Here class is used instead of its object scan to access the method nextLine

Corrected statement:

String s2 = scan.nextLine();

String n = scan.nextLine();

Here n is of type String but n is a whole number so it should be of type int. Also the method nextInt will be used to scan and accept an integer value

Corrected statement:

int n = scan.nextInt();

System.out.println(s1.substring(1,n-1) + s2.substring(s1.length()-n));

This statement is also not correct

Corrected statement:

System.out.println(s1.substring(0,n) + s2.substring(s2.length() - n ));

This works as follows:

s1.substring(0,n) uses substring method to return a new string that is a substring of this s1. The substring begins at the 0th index of s1 and extends to the character at index n.

s2.substring(s2.length() - n ) uses substring method to return a new string that is a substring of this s2. The substring then uses length() method to get the length of s2 and subtracts integer n from it and thus returns the last n characters of s2.

The screenshot of program along with its output is attached.