Question

Prompt the user to enter a string of their choosing. Store the text in a string. Output the string. (2 pt)

Ex:

Enter a sample text:

We'll continue our quest in space. There will be more shuttle flights and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space. Nothing ends here; our hopes and our journeys continue!

You entered: We'll continue our quest in space. There will be more shuttle flights and more shuttle crews and, yes, more volunteers, more civilians, more teachers in space. Nothing ends here; our hopes and our journeys continue!

Implement a printMenu() method, which outputs a menu of user options for analyzing/editing the string, and returns the user's entered menu option. Each option is represented by a single character.

If an invalid character is entered, continue to prompt for a valid choice. Hint: Implement Quit before implementing other options. Call printMenu() in the main() method. Continue to call printMenu() until the user enters q to Quit. (4 pts)

Ex:

MENU

c - Number of non-whitespace characters

w - Number of words

f - Find text

r - Replace all !'s

s - Shorten spaces

q - Quit

Choose an option:

More coming ANSWER IN JAVA

Answer 1

import java.util.Scanner;

public class StringOperations {

   static String text;
  
   public static void printMenu() {
      
       String choose = "y";
      
       Scanner s = new Scanner(System.in);
       while(choose.charAt(0) != 'q') {
          
           System.out.println("MENU\r\n" +
               "\r\n" +
               "c - Number of non-whitespace characters\r\n" +
               "\r\n" +
               "w - Number of words\r\n" +
               "\r\n" +
               "f - Find text\r\n" +
               "\r\n" +
               "r - Replace all !'s\r\n" +
               "\r\n" +
               "s - Shorten spaces\r\n" +
               "\r\n" +
               "q - Quit\r\n" +
               "\r\n" +
               "Choose an option:");
      
           choose = s.nextLine();
          
           if(choose.charAt(0) == 'c') {   //Number of non-whitespace characters
               System.out.println("Number of non-whitespace characters : " + numOfNonWSChars());
           }
           else if(choose.charAt(0) == 'w') {   //Number of words
               System.out.println("Number of words : " + numOfWords());
           }
           else if(choose.charAt(0) == 'f') {   //Find text
               System.out.println("Enter text to find : ");
               String find = s.nextLine();
               System.out.println("Find Text : " + findText(find));
           }
           else if(choose.charAt(0) == 'r') {   //Replace all !'s
               System.out.println("Replace all !'s : " + replaceExclamation());
           }
           else if(choose.charAt(0) == 's') {   //Shorten spaces
               System.out.println("Shorten Spaces : " + shortenSpaces());
           }
      
       }
       s.close();
      
   }
  
   public static int numOfNonWSChars() {
      
       int count = 0;
       String input = text;
      
       for(int i=0; i<input.length(); i++) {
           if(input.charAt(i) != ' ') {
               count++;
           }
       }
      
       return count;
   }
  
   public static int numOfWords() {
      
       int count = 0;
       String input = text;
      
       input = input.replaceAll("\\p{Punct}", "");       //remove all punctuation marks
       input = input.trim();                           //remove leading and trailing whitespaces
       input = input.replaceAll(" ", " ");       //replace double space with single space
       String[] list = input.split(" ");
      
       count = list.length;
      
       return count;
   }
  
   public static String findText(String find) {
      
       String temp = "";
       String input = text;
      
       if(input.contains(find)) {
           temp = "Text found at index : " + input.indexOf(find);
       }
       else {
           temp = "Text not found!";
       }
       return temp;
   }
  
   public static String replaceExclamation(){
      
       String input = text;
       input = input.replaceAll("!", "");
      
       return input;
      
   }
  
   public static String shortenSpaces(){
      
       String input = text;
       input = input.trim();                   //remove leading and trailing whitespaces  
       input = input.replaceAll(" ", " ");   //remove double space
      
       return input;
      
   }
  
   public static void main(String[] args) {

       Scanner s = new Scanner(System.in);
       System.out.println("Enter a sample text:");
       String inputText = s.nextLine();
      
       text = inputText;
      
       System.out.println("You entered: " + inputText);
      
       printMenu();
      
       s.close();      

   }
}