Final text2bin code

package stackoverflowtests;

/**
 *
 * @author Stephan
 */
public class StackOverflowTests {

    public static void main(String[] args) {
        // This Binary string is bin for 128256128256
        String bin1 = "00111111100011010011111110001101001111111000110100111111100011010011111110001101";
        String text = bin2text(bin1);
        System.out.println(text);
        String bin2 = text2bin(text);
        System.out.println(bin1);
        System.out.println(bin2);
        System.out.println(bin1.equals( bin2 ));

    }

    /**
     * Binary String to ASCII characters conversion This is an untested example
     * and may or may not work as advertised
     *
     * @author: Stephan Heijl
     */
    public static String bin2text(String binary) {
        int mod = 0; // Indicates the extra padding on the last character
        int pieceNo = (int) (binary.length() / 8); // Number of pieces
        // We'll use StringBuilder as we'll be doing a lot of concatenations
        StringBuilder text = new StringBuilder();

        for (int p = 0; p <= pieceNo; p++) {

            String piece = "";
            try {
                piece = binary.substring(p * 8, (p + 1) * 8); // This should be an 8 character long piece of the binary string
            } catch (java.lang.StringIndexOutOfBoundsException e) {
                // If this is reached the binary string is not a multiple of eight, so we compensate by padding the number with 0's.
                piece = binary.substring(p * 8); // This might need some work
                while (piece.length() < 8) {
                    piece = "0" + piece;
                    mod++;
                }
            }

            // First convert the binary string to an int
            int binValue = Integer.parseInt(piece, 2);
            // now convert that to a char
            char binCharacter = (char) binValue;

            // And append this to the whole string.
            text.append(String.valueOf(binCharacter));
        }

        // Convert the StringBuilder instance into a String to write to a file
        return String.valueOf(mod) + text.toString();
    }

    /**
     * Reverse text => Binary String method Also untested, binary to string at:
     * http://pastebin.com/KEYV8jgx
     */
    public static String text2bin(String text) {
        StringBuilder binary = new StringBuilder();
        int mod = Integer.parseInt(text.substring(0,1));
        text = text.substring(1);

        for (int c = 0; c < text.length(); c++) {
            // Get the char at each position in the text, cast it to an int
            int n = (int) text.charAt(c);
            // Turn the integer into a binary String (01010101)
            String binString = Integer.toBinaryString(n);
            // Add it to the StringBuilder

            while (binString.length() < 8) {
                binString = "0" + binString;
            }
            if ( c == text.length()-1 ) {
                binString = binString.substring(mod);
            }
            binary.append(binString);
        }
        // Convert the StringBuilder instance into a String to decode
        return binary.toString();
    }
}