encrypt / decrypt with RSA in JAVA

CryptoUtility.java

import java.security.GeneralSecurityException;
import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import javax.crypto.Cipher;
import javax.xml.bind.DatatypeConverter;

// to generate a KeyPair use 
//    KeyPair keys = KeyPairGenerator.getInstance("RSA").generateKeyPair();
//    PrivateKey privKey = keys.getPrivate();
//    PublicKey pubKey = keys.getPublic();
final public class CryptoUtility
{
    public static String encrypt(final String clearText, final String base64EncodedRSAPublicKey) throws GeneralSecurityException
    {
        final byte[] publicKey = DatatypeConverter.parseBase64Binary(base64EncodedRSAPublicKey);

        KeyFactory kf = KeyFactory.getInstance("RSA");
        PublicKey pk = kf.generatePublic(new X509EncodedKeySpec(publicKey));

        Cipher cipher = Cipher.getInstance("RSA");
        cipher.init(Cipher.ENCRYPT_MODE, pk);

        final byte[] encrypted = cipher.doFinal(clearText.getBytes());

        return DatatypeConverter.printBase64Binary(encrypted);
    }

    public static String decrypt(final String encryptedText, final String base64EncodedRSAPrivateKey) throws GeneralSecurityException
    {
        final byte[] privateKey = DatatypeConverter.parseBase64Binary(base64EncodedRSAPrivateKey);

        KeyFactory kf = KeyFactory.getInstance("RSA");
        PrivateKey pk = kf.generatePrivate(new PKCS8EncodedKeySpec(privateKey));

        Cipher cipher = Cipher.getInstance("RSA");
        cipher.init(Cipher.DECRYPT_MODE, pk);

        final byte[] decrypted = cipher.doFinal(DatatypeConverter.parseBase64Binary(encryptedText));

        return new String(decrypted);
    }
}