import java.util.*;

/**
 * A very simple Document class that can be used to explore
 * issues related to accessibility/visibility
 *
 * @author  Prof. David Bernstein, James Madison University
 * @version 2.0
 */
public class Document
{
    // Note that the attributes are protected
    protected String       delimiters, text;


    /**
     * Explicit Value Constuctor
     *
     * @param text   The text of the document
     */
     public Document(String text)
     {
		this.text = text;
		delimiters = " ,.;:!?\t\n\r";
     }


    /**
     * Append additional text to the end of this Document
     *
     * @param addition   The text to append
     */
     public void append(String addition)
     {
		text = text + addition;
     }


    /**
     * Get a description of this Document that
     * includes a statistical summary
     *
     * @return  The description
     */
     public String getDescription()
     {
		int          count;
		String       result;

		count  = getWordCount();

		result = "This document has " + count;
		
		if (count == 1) 
			 result = result + " word ";
		else 
			 result = result + " words ";

		count = getLineCount();
	
		result = result + "and " + count;
		
		if (count == 1) 
			result = result + " line ";
		else 
			result = result + " lines ";

		return result;
    }


    /**
     * Get the text of this Document
     *
     * @return  The text
     */
     public String getText()
     {
		return text;
	 }


    /**
     * Get the number of lines in this Document
     *
     * @return  The number of lines
     */
     public int getLineCount()
     {
		char               character;
		int                count, i;

	
		count = 1; // Initialize the line counter
		if (text.length() == 0)  // No words means no lines
			count = 0; 

		// Count the number of newline characters
		for (i=0; i < text.length(); i++) 
		{
		    character = text.charAt(i);
			if (character == '\n') 
				count = count + 1;
	    }

		return count;
    }

    /**
     * Get the number of words in this Document
     *
     * @return  The number of words
     */
     public int getWordCount()
     {
		int                count;
		StringTokenizer    tokenizer;

		tokenizer = new StringTokenizer(text, delimiters);
	
		count = tokenizer.countTokens();

		return count;
     }

}  // end Document