Why when I try to remove non-breaking space from the string, I do not get the expected result?

Question

I am writing code to create a cipher text using first a Transposition, then a substitution. So far, what I have done run fine (no substitution yet), except that the text obtained from the transposition contains non-breaking spaces.

After searching online, one of the solutions is to use text.replace("\ ", "") , which I use in my code, but it does not help me remove those non-breaking spaces. Your help and suggestions will be very appreciated. I am using Java with Netbeans IDE 7.4.

public class Cipher {

    static java.util.HashMap<String, String> HMOperators = new java.util.HashMap<String, String>();
    public static char[] Alphabet = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'};

    /**
     * @param args the command line arguments
     */

    static int locateindex = 0;

    static int[] WhiteSpaceSeparator = new int[100];

    public static String TCipher(String text) 
    {

        char[] stringtoCharArray = text.toCharArray();
        char ch;

        int loc = 0;
        for (int i = 0; i < text.length(); i++) 
        {
            ch = stringtoCharArray[i];

            if (Character.isSpaceChar(ch)) 
        {
            WhiteSpaceSeparator[loc] = i;
        }
        loc++;

        }

        text = text.trim();
        String PlainTextNoSpace = text.replaceAll(" ", "");

        char[] charArray = PlainTextNoSpace.toCharArray();

        int NewIndexArray[] = {2, 7, 5, 3, 0, 4, 6, 1};

        int Rows = 6;
        int Cols = 8;

        char TArray[][] = new char[Rows][Cols];

        int i = 0;


        for (int row = 0; row <= 5; row++) 
        {
             if (i == charArray.length) 
             {
                break;
             }
             TArray[row][NewIndexArray[0]] = charArray[i];  //@ column number index == 2

             if ((i + 1) == charArray.length) 
             {
                break;
             }
             TArray[row][NewIndexArray[1]] = charArray[i + 1]; //@ column number index == 7

             if ((i + 2) == charArray.length) 
             {
               break;
             }
             TArray[row][NewIndexArray[2]] = charArray[i + 2]; //5

             if ((i + 3) == charArray.length) 
             {
                break;
             }
             TArray[row][NewIndexArray[3]] = charArray[i + 3]; //3

            if ((i + 4) == charArray.length) 
            {
                break;
            }
            TArray[row][NewIndexArray[4]] = charArray[i + 4]; //0

            if ((i + 5) == charArray.length) 
            {
                break;
            }
            TArray[row][NewIndexArray[5]] = charArray[i + 5]; //4

           if ((i + 6) == charArray.length) 
            {
                break;
            }
           TArray[row][NewIndexArray[6]] = charArray[i + 6]; //6

            if ((i + 7) == charArray.length) 
            {
                break;
            }
            TArray[row][NewIndexArray[7]] = charArray[i + 7]; //1

            i = i + 8;

        }

        //printing the new 2d array with columns organized in increasing order
        //the new plain text has to be read from the firt column (column 0) to the last one (column 7)
        for (int rows = 0; rows < 6; rows++) 
        {
            System.out.println();
            for (int col = 0; col < 8; col++) 
            {
                System.out.print(TArray[rows][col]);
            }

        }

        //Reading the new plain test per column
        char[] NewTChar = new char[Rows * Cols];

        int k = 0;
        for (int col = 0; col < 8; col++) 
        {
            System.out.println();
            for (int rows = 0; rows < 6; rows++) 
            {
                ch = TArray[rows][col];
                NewTChar[k] = ch;  //storing all the columns into a 1d array to obtain a new text (new cipher)

                k++;

            }

        }

        int n = 0;

        String SeconPlainText = new String(NewTChar);

        SeconPlainText = SeconPlainText.trim();

        SeconPlainText = SeconPlainText.replace("\u00A0", "");  //It does not work, I am not sure why

        System.out.println(SeconPlainText);  

        System.out.println(SeconPlainText);

        StringTokenizer st = new StringTokenizer(SeconPlainText);//it seems like the string is only one token
        while (st.hasMoreTokens()) 
        {
            System.out.println(st.nextToken());  //it prints the whole string, instead of each token
        }
        int a = st.countTokens();

        return SeconPlainText;
    }

    public static void main(String[] args) 
    {

        String PlainText = "Machines take me by surprise with great frequency";

        String Ttext = TCipher(PlainText);

        // SCipher(Ttext);
    }

}

Answer 1

I actually edited one of my for loops such that I have to force to store an actual white space character when a non-breaking space is encountered. Thus, when the char array is converted into a string, I can later remove the white space from the string using the text.replace(" ",""); Now, it works as expected. However, in the IDE (Netbeans), "isJavaLetter" is crossed out. I am not sure if it means it is deprecated, but it helped me do what I want. Below is my updated for loop:

 for (int col = 0; col < 8; col++) 
 {
        System.out.println();
        for (int rows = 0; rows < 6; rows++) 
        {
            ch = TArray[rows][col];

            if(Character.isJavaLetter(ch))//

                NewTChar[k] = ch;  //storing all the columns into a 1d array to obtain a new text (new cipher)
            else
                    NewTChar[k] =' ';   //storing an actual white space character
            k++;

        }

 }