code: private SSLContext getSSLContext(String truststorePath,
                                       String truststorePassword,
                                       String keystorePath, 
                                       String keystorePassword) throws Exception {
  
          FileInputStream tsf = new FileInputStream(truststorePath);
          KeyStore ts = KeyStore.getInstance("JKS");
          ts.load(tsf, truststorePassword.toCharArray());
          TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
          tmf.init(ts);
  
          FileInputStream ksf = new FileInputStream(keystorePath);
          KeyStore ks = KeyStore.getInstance("JKS");
          ks.load(ksf, keystorePassword.toCharArray());
          KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
          kmf.init(ks, keystorePassword.toCharArray());
  
          SSLContext ctx = SSLContext.getInstance("SSL");
          ctx.init(kmf.getKeyManagers(), tmf.getTrustManagers(), new SecureRandom());
          return ctx;
      }
docs: Build an SSLContext from the given truststore and keystore parameters.