BAEL-1531 Add class to connect to secured server (#3919)

core-java/src/main/java/com/baeldung/ssl/SecureConnection.java

@@ -0,0 +1,54 @@
+package com.baeldung.ssl;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import javax.net.ssl.SSLSocket;
+import javax.net.ssl.SSLSocketFactory;
+
+public class SecureConnection {
+    
+    public static void main(String[] args) {
+        if (args.length != 2) {
+            System.out.println("Use: SecureConnection host port");
+            System.exit(1);
+        }
+        try {
+            String host = getHost(args);
+            Integer port = getPort(args);
+            SSLSocketFactory sslsocketfactory = (SSLSocketFactory) SSLSocketFactory.getDefault();
+            SSLSocket sslsocket = (SSLSocket) sslsocketfactory.createSocket(host, port);
+            InputStream in = sslsocket.getInputStream();
+            OutputStream out = sslsocket.getOutputStream();
+            
+            out.write(1);
+            
+            while (in.available() > 0) {
+                System.out.print(in.read());
+            }
+            
+            System.out.println("Secured connection performed successfully");
+            
+        } catch (Exception exception) {
+            exception.printStackTrace();
+        }
+    }
+    
+    /**
+     * Get the host from arguments
+     * @param args the arguments
+     * @return the host
+     */
+    private static String getHost(String[] args) {
+        return args[0];
+    }
+    
+    /**
+     * Get the port from arguments
+     * @param args the arguments
+     * @return the port
+     */
+    private static Integer getPort(String[] args) {
+        return Integer.parseInt(args[1]);
+    }
+}