Decrypting an Encrypted RSA - JAVA

I have my RSA encryption working... it's just that I'm totally stuck on how to decrypt the RSA. Here is the code that I have right now and any little hints would gladly be appreciated. My output shows the encrypted message as gibberish, but my decrypted message isn't popping out as it should:

EDIT: Oh, assume that P, Q, PQ, PhiPQ, E and D are already found. I have these found already. I just don't know exactly how to code the decryption of the RSA.

    String encryptedMessage = "";

    String message = JOptionPane.showInputDialog(null, "Enter a message: ");

    int c = 0;

    for (int i = 0; message.length() > i; i++) {
        char l = message.charAt(i);
        int m = l;
        c = 1;
        int newE = e;

        while (newE > 0) {
            if (newE % 2 != 0) {
                c = ((c * m) % (pq));
            }
            newE = newE / 2;
            m = (((m * m)) % (pq));
        }
        encryptedMessage = encryptedMessage + (char) c;
    }

    System.out.println("Encrypted Message is: " + encryptedMessage);

    // ********************************************************************
    // Decrypting
    // ********************************************************************

    String decryptedMessage = "";

    c = 0;
    for (int i = 0; encryptedMessage.length() > i; i++) {
        char l = encryptedMessage.charAt(i);
        int m = l;
        c = 1;
        int newE = e;

        while (newE > 0) {
            if (newE % 2 != 0) {
                c = ((c * m) % (pq));
            }
            newE = newE / 2;
            m = (int)((Math.pow(c, d)) % pq);
        }
        decryptedMessage = decryptedMessage + c;
    }
    // prints out 'decryptedMessage' value
    System.out.println("Decrypted Message is: " + decryptedMessage);
}
}