Question

A client at a software design company wants assistance processing
their documents.  After interviewing the client you find that their
documents consist of a one sentence title, a date, and a series of
paragraphs.  Each paragraph is a simple list of sentences.  Paragraphs
are separated by new lines.  Each document also has an author (first
and last name) and a document access level (open, internal or
confidential).

 At a minimal level the client would like the software to be able to:
* Count the number of words in the document (with or without the
  title)
* Count the number of characters in the document
* Print out a document
* Print out the date of the document
* Print out the author of the document

Additional desirable features:
* Count the number of a particular type of word (noun, verb, proper
  noun or other) 
* Given a title, date, author and a string for the remaining document,
  create a document file
* Spell check the document 

Answer 1

JAVA Code :

import java.io.File; // Import the File class
import java.io.FileNotFoundException; // Import this class to handle errors
import java.util.Scanner; // Import the Scanner class to read text files
import java.io.FileWriter;   // Import the FileWriter class
import java.io.IOException; // Import the IOException class to handle errors

public class Main {
    public static void main(String[] args) {
        int ch = 0;
        Scanner sc= new Scanner(System.in);    //System.in is a standard input stream

        while(ch!=3){
            System.out.println("Menu : ");
            System.out.println("1. Read a File.");
            System.out.println("2. Write to a File.");
            System.out.println("3. Exit.");
          
            ch = sc.nextInt();
          
            switch (ch) {
                case 1 :
                    try {
                        File doc1 = new File("Document1.txt"); //Create File Object to read file "Document1.txt"
                        Scanner doc1Reader = new Scanner(doc1);
                        String title="", date="", author="", accessLevel="", data = "";
                        String[] paragraph;
                        int numOfWordsWithTitle = 0, numOfWordsWithoutTitle = 0, numOfCharactersWithTitle = 0, numOfCharactersWithoutTitle = 0;
                      
                        title = doc1Reader.nextLine(); //Read Title from Document1.txt
                        date = doc1Reader.nextLine(); //Read Date from Document1.txt
                        author = doc1Reader.nextLine(); //Read Author from Document1.txt
                        accessLevel = doc1Reader.nextLine(); //Read Access Level from Document1.txt
              
                        while (doc1Reader.hasNextLine()) {
                        data = data + doc1Reader.nextLine(); //Read Data from Document1.txt
                        }
              
                        numOfCharactersWithTitle = title.length() + data.length(); //Calculate Number of Characters with title.
                        numOfCharactersWithoutTitle = data.length(); //Calculate Number of Characters without title.
                      
                        numOfWordsWithTitle = title.split(" ", 100).length;
                        numOfWordsWithoutTitle = 0;
                        paragraph = data.split("\n", 100);
                  
                        for(int i = 0; i < paragraph.length; i++){
                            numOfWordsWithTitle = numOfWordsWithTitle + paragraph[i].split(" ", 1000).length; //Calculate Number of Words with title.
                            numOfWordsWithoutTitle = numOfWordsWithoutTitle + paragraph[i].split(" ", 1000).length; //Calculate Number of Words without title.
                        }
                  
                        System.out.println("Document Data : ");
                        System.out.println(data); //Display Data.
                        System.out.println("Document Date : ");
                        System.out.println(date); //Display Date.
                        System.out.println("Document Author : ");
                        System.out.println(author); //Display Author.
                        System.out.println("Document Word count (with title) : ");
                        System.out.println(numOfWordsWithTitle); //Display Data Word count (with title).
                        System.out.println("Document Word count (without title) : ");
                        System.out.println(numOfWordsWithoutTitle); //Display Data Word count (without title).
                        System.out.println("Document Character count (with title) : ");
                        System.out.println(numOfCharactersWithTitle); //Display Data Character count (with title).
                        System.out.println("Document Character count (without title) : ");
                        System.out.println(numOfCharactersWithoutTitle); //Display Data Character count (without title).
                        System.out.println("Document Title : ");
                        System.out.println(title); //Display Title.
                        System.out.println("Document Access Level : ");
                        System.out.println(accessLevel); //Display Access Level.
                      
                        doc1Reader.close();
                    } catch (FileNotFoundException e) {
                        System.out.println("An error occurred.");
                        e.printStackTrace();
                    }
                    break;
                  
                case 2 :
                    try {
                        FileWriter doc2Writer = new FileWriter("Document2.txt");
                        String title, date, author, accessLevel, data = "";
                      
                        sc.nextLine();
                        System.out.println("Enter Title : ");
                        title = sc.nextLine(); //Get Title from User.
                        System.out.println("Enter Date : ");
                        date = sc.nextLine(); //Get Date from User.
                        System.out.println("Enter Author Name (FirstName LastName) : ");
                        author = sc.nextLine(); //Get Author from User.
                        System.out.println("Enter Access Level (Open/Internal/Confidential) : ");
                        accessLevel = sc.nextLine();
                        System.out.println("Enter Data : ");
                        data = sc.nextLine();
                      
                        //Write to File.
              
                        doc2Writer.write(title + "\n");
                        doc2Writer.write(date + "\n");
                        doc2Writer.write(author + "\n");
                        doc2Writer.write(accessLevel + "\n");
                        doc2Writer.write(data + "");
                      
                        doc2Writer.close();
                        System.out.println("Successfully wrote to the file.");
                    } catch (IOException e) {
                        System.out.println("An error occurred.");
                        e.printStackTrace();
                    }
                break;
            }
        }
    }
}

Screenshots :

Code :

Document 1 :

Document 2 :

OutPut :