Strings&Testing

import java.lang.Character;
/**
 * Write a description of class TextLine here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */
public class TextLine
{
    // instance variables - replace the example below with your own
    private String text;

    /**
     * Constructor for objects of class TextLine
     */
    public TextLine()
    {
        // initialise instance variables
        text = "Test my methods.";
    }
    public TextLine(String s)
    {
        text = s;
    }
    public TextLine(TextLine t)
    {
        t = new TextLine(text);
    }

    public int countChars()
    {
        return text.length();
    }
    public int countWords()
    {
        String[] words = new String[0];
        if(text.contains(" "))
        {
            words = text.split(" ");
            int wordCount = words.length;
            return wordCount;
        }
        else if(text.isEmpty())
        {
            return 0;
        }
        return 1;
    }
    public int countLetters()
    {
        char[] characterArray = new char[0];
        for(int i = 0; i < text.length(); i++)
        {
            char character = text.charAt(i);
            if(Character.isLetter(i))
            {
                characterArray = text.toCharArray();
                return characterArray.length;
            }
            else if(text.isEmpty())
            {
                return 0;
            }
        }
        return characterArray.length;
    }
}