Convert a PEM-formatted String to a java.security.cert.X509Certificate

Question

How does one create a java.security.cert.X509Certificate instance from a PEM-formatted String? The PEM-formatted String is a HTTP request \"SSL_CLIENT_CERT\" h

Answer 1

Another sample,

public static X509Certificate convertToX509Cert(String certificateString) throws CertificateException {
    X509Certificate certificate = null;
    CertificateFactory cf = null;
    try {
        if (certificateString != null && !certificateString.trim().isEmpty()) {
            certificateString = certificateString.replace("-----BEGIN CERTIFICATE-----\n", "")
                    .replace("-----END CERTIFICATE-----", ""); // NEED FOR PEM FORMAT CERT STRING
            byte[] certificateData = Base64.getDecoder().decode(certificateString);
            cf = CertificateFactory.getInstance("X509");
            certificate = (X509Certificate) cf.generateCertificate(new ByteArrayInputStream(certificateData));
        }
    } catch (CertificateException e) {
        throw new CertificateException(e);
    }
    return certificate;
}