Java by API/javax.net.ssl/SSLSocketFactory

ServerSocketFactory: createServerSocket(int arg0)

import java.io.IOException;
import javax.net.ssl.SSLServerSocket;
import javax.net.ssl.SSLServerSocketFactory;
import javax.net.ssl.SSLSocket;
public class MainClass {
  public static void main(String[] args) {
    int port = Integer.parseInt(args[0]);
    try {
      System.out.println("Locating server socket factory for SSL...");
      SSLServerSocketFactory factory = (SSLServerSocketFactory) SSLServerSocketFactory.getDefault();
      System.out.println("Creating a server socket on port " + port);
      SSLServerSocket serverSocket = (SSLServerSocket) factory.createServerSocket(port);
      String[] suites = serverSocket.getSupportedCipherSuites();
      System.out.println("Support cipher suites are:");
      for (int i = 0; i < suites.length; i++) {
        System.out.println(suites[i]);
      }
      serverSocket.setEnabledCipherSuites(suites);
      System.out.println("Support protocols are:");
      String[] protocols = serverSocket.getSupportedProtocols();
      for (int i = 0; i < protocols.length; i++) {
        System.out.println(protocols[i]);
      }
      System.out.println("Waiting for client...");
      SSLSocket socket = (SSLSocket) serverSocket.accept();
      System.out.println("Starting handshake...");
      socket.startHandshake();
      System.out.println("Just connected to " + socket.getRemoteSocketAddress());
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
}

SSLSocketFactory: createSocket(String arg0, int arg1)

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.security.Principal;
import java.security.cert.X509Certificate;
import javax.net.ssl.SSLPeerUnverifiedException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
public class MainClass {
  public static void main(String[] args) throws Exception {
    SSLSocketFactory factory = (SSLSocketFactory) SSLSocketFactory.getDefault();
    String hostName = "hostName";
    String fileName = "fileName";
    SSLSocket sslsock = (SSLSocket) factory.createSocket(hostName, 443);
    SSLSession session = sslsock.getSession();
    X509Certificate cert;
    try {
      cert = (X509Certificate) session.getPeerCertificates()[0];
    } catch (SSLPeerUnverifiedException e) {
      System.err.println(session.getPeerHost() + " did not present a valid certificate.");
      return;
    }
    System.out.println(session.getPeerHost() + " has presented a certificate belonging to:");
    Principal p = cert.getSubjectDN();
    System.out.println("\t[" + p.getName() + "]");
    System.out.println("The certificate bears the valid signature of:");
    System.out.println("\t[" + cert.getIssuerDN().getName() + "]");
    System.out.print("Do you trust this certificate (y/n)? ");
    System.out.flush();
    BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
    if (Character.toLowerCase(console.readLine().charAt(0)) != "y")
      return;
    PrintWriter out = new PrintWriter(sslsock.getOutputStream());
    out.print("GET " + fileName + " HTTP/1.0\r\n\r\n");
    out.flush();
    BufferedReader in = new BufferedReader(new InputStreamReader(sslsock.getInputStream()));
    String line;
    while ((line = in.readLine()) != null)
      System.out.println(line);
    sslsock.close();
  }
}

SSLSocketFactory: getDefault()

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.security.Principal;
import java.security.cert.X509Certificate;
import javax.net.ssl.SSLPeerUnverifiedException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
public class MainClass {
  public static void main(String[] args) throws Exception {
    SSLSocketFactory factory = (SSLSocketFactory) SSLSocketFactory.getDefault();
    String hostName = "hostName";
    String fileName = "fileName";
    SSLSocket sslsock = (SSLSocket) factory.createSocket(hostName, 443);
    SSLSession session = sslsock.getSession();
    X509Certificate cert;
    try {
      cert = (X509Certificate) session.getPeerCertificates()[0];
    } catch (SSLPeerUnverifiedException e) {
      System.err.println(session.getPeerHost() + " did not present a valid certificate.");
      return;
    }
    System.out.println(session.getPeerHost() + " has presented a certificate belonging to:");
    Principal p = cert.getSubjectDN();
    System.out.println("\t[" + p.getName() + "]");
    System.out.println("The certificate bears the valid signature of:");
    System.out.println("\t[" + cert.getIssuerDN().getName() + "]");
    System.out.print("Do you trust this certificate (y/n)? ");
    System.out.flush();
    BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
    if (Character.toLowerCase(console.readLine().charAt(0)) != "y")
      return;
    PrintWriter out = new PrintWriter(sslsock.getOutputStream());
    out.print("GET " + fileName + " HTTP/1.0\r\n\r\n");
    out.flush();
    BufferedReader in = new BufferedReader(new InputStreamReader(sslsock.getInputStream()));
    String line;
    while ((line = in.readLine()) != null)
      System.out.println(line);
    sslsock.close();
  }
}