added Socket Programming

Author: jake1412

assignment6/.idea/encodings.xml renamed to Socket-Programming/.idea/encodings.xml

@@ -7,6 +7,5 @@
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="library" name="Java EE 6-Java EE 6" level="project" />
   </component>
 </module>

assignment6/.idea/misc.xml renamed to Socket-Programming/.idea/misc.xml

@@ -0,0 +1,17 @@
+import java.io.*;
+import java.net.*;
+
+public class FirstClient {
+    public static void main(String[] args) {
+        try{
+            Socket s = new Socket("localhost",6666); // binding ip address and port number
+            DataOutputStream dout = new DataOutputStream(s.getOutputStream());
+            dout.writeUTF("Hello Server");
+            dout.flush();
+            dout.close();
+            s.close();
+        }catch(Exception e){
+            System.out.println(e);
+        }
+    }
+}

assignment6/.idea/modules.xml renamed to Socket-Programming/.idea/modules.xml

@@ -0,0 +1,24 @@
+import java.io.*;
+import java.net.*;
+
+public class FirstServer {
+    public static void main(String[] args) {
+        try{
+            ServerSocket ss = new ServerSocket(6666); // port binding
+            // accept is blocking call
+            // whenever client sends request, this will unblock the server
+            // then will create a new socket for the particular client requesting the connection
+            Socket s = ss.accept(); // establishing connection
+            // input stream to read data from client
+            // DataInputStream wraps s.getInputStream
+            DataInputStream dis = new DataInputStream(s.getInputStream());
+            // reading line
+            String str = (String)dis.readUTF();
+            // when client sends text, it will read it and print it on screen
+            System.out.println("message = " + str);
+            ss.close(); // closing socket
+        }catch(Exception e){
+            System.out.println(e);
+        }
+    }
+}