Question

1. Create a Java program.
2. The class name for the program should be 'EncryptText'.
3. In the main method you should perform the following:
   • You should read a string from the keyboard using the Scanner class object.
   • You should then encrypt the text by reading each character from the string and adding 1 to the character resulting in a shift of the letter entered.
   • You should output the string entered and the resulting encrypted string.

Pseudo flowchart for additional code to be added to the program:

1. After the input string is entered from the keyboard add the following logic.
2. Create a string to hold the lowercase version of the input string.
3. Create a result string to hold the encrypted characters.
4. Loop through each character of the lower case string.
5. The code should read each character of the input string and add 1 to the character so that the character is shifted one position higher in the character sequence.
6. For instance if the input character is an 'a' then the character should be shifted to a 'b'. A 'b' would become a 'c', a 'c' would become a 'd', etc.
7. After you add 1 to the character you should concatenate the character to a result string.
8. Output the string input and the result string.

Answer 1

import java.util.Scanner;

class Main {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in); // scanner for input

String input; // input string

String lowercase; //lowercase string

String encrypt= new String(); // string for encryption

System.out.print("Enter the string:");

input = sc.nextLine(); // input

lowercase=input.toLowerCase(); // convert to lowercase

for(int i=0;i<lowercase.length();i++){

encrypt+=(char)(lowercase.charAt(i)+1); // increment 1 into ASCII

}

System.out.println("Original String: "+input); // output original

System.out.println("Encrypted String: "+ encrypt); // output encrypted

}

}

OUTPUT:

Pseudocode:

/*

declare string original

declare string lowercase

declare string encrypted

input string original

lowercase = original.toLowerCase

declare and intialize i to 0

while (i<lowercase.length):

encrypted = encrypted + (char)lowercase[i]+1

i++

print original

print encrypted

*/

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