OkHttp Client Ignore certificate

OkHttpUtil.java

import okhttp3.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.net.ssl.*;
import java.net.*;
import java.security.cert.CertificateException;

/*
okhttp version used 3.8.1
*/
public class OkHttpUtil {

    private static final Logger LOGGER = LoggerFactory.getLogger(OkHttpUtil.class.getName());

    private static OkHttpClient client = null;
    private static boolean ignoreSslCertificate = false;

    public static OkHttpClient getClient() {
        return client;
    }

    public static void init(boolean ignoreCertificate) throws Exception {

        OkHttpClient.Builder builder = new OkHttpClient.Builder();

        LOGGER.info("Initialising httpUtil with default configuration");
        if (ignoreCertificate) {
            ignoreSslCertificate = true;
            builder = configureToIgnoreCertificate(builder);
        }

        //Other application specific configuration

        client = builder.build();
    }

    //Setting testMode configuration. If set as testMode, the connection will skip certification check
    private static OkHttpClient.Builder configureToIgnoreCertificate(OkHttpClient.Builder builder) {
        LOGGER.warn("Ignore Ssl Certificate");
        try {

            // Create a trust manager that does not validate certificate chains
            final TrustManager[] trustAllCerts = new TrustManager[] {
                    new X509TrustManager() {
                        @Override
                        public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType)
                                throws CertificateException {
                        }

                        @Override
                        public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType)
                                throws CertificateException {
                        }

                        @Override
                        public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                            return new java.security.cert.X509Certificate[]{};
                        }
                    }
            };

            // Install the all-trusting trust manager
            final SSLContext sslContext = SSLContext.getInstance("SSL");
            sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
            // Create an ssl socket factory with our all-trusting manager
            final SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();

            builder.sslSocketFactory(sslSocketFactory, (X509TrustManager)trustAllCerts[0]);
            builder.hostnameVerifier(new HostnameVerifier() {
                @Override
                public boolean verify(String hostname, SSLSession session) {
                    return true;
                }
            });
        } catch (Exception e) {
            LOGGER.warn("Exception while configuring IgnoreSslCertificate" + e, e);
        }
        return builder;
    }

}