Socket Server code added

palindrome

@@ -0,0 +1,24 @@
+import java.util.*;
+
+class Palindrome
+{
+   public static void main(String args[])
+   {
+      String original, reverse = ""; // Objects of String class
+      Scanner in = new Scanner(System.in);
+
+      System.out.println("Enter a string to check if it is a palindrome");
+      original = in.nextLine();
+
+      int length = original.length();
+
+      for (int i = length - 1; i >= 0; i--)
+         reverse = reverse + original.charAt(i);
+
+      if (original.equals(reverse))
+         System.out.println("The string is a palindrome.");
+      else
+         System.out.println("The string isn't a palindrome.");
+
+   }
+}    

palindrome.java

@@ -0,0 +1,24 @@
+import java.util.*;
+
+class Palindrome
+{
+   public static void main(String args[])
+   {
+      String original, reverse = ""; // Objects of String class
+      Scanner in = new Scanner(System.in);
+
+      System.out.println("Enter a string to check if it is a palindrome");
+      original = in.nextLine();
+
+      int length = original.length();
+
+      for (int i = length - 1; i >= 0; i--)
+         reverse = reverse + original.charAt(i);
+
+      if (original.equals(reverse))
+         System.out.println("The string is a palindrome.");
+      else
+         System.out.println("The string isn't a palindrome.");
+
+   }
+}    

socket/Client.java

@@ -0,0 +1,70 @@
+
+import java.net.*; 
+import java.io.*; 
+
+public class Client 
+{ 
+    // initialize socket and input output streams 
+    private Socket socket            = null; 
+    private DataInputStream  input   = null; 
+    private DataOutputStream out     = null; 
+
+    // constructor to put ip address and port 
+    public Client(String address, int port) 
+    { 
+        // establish a connection 
+        try
+        { 
+            socket = new Socket(address, port); 
+            System.out.println("Connected Succesfully"); 
+
+            // takes input from terminal 
+            input  = new DataInputStream(System.in); 
+
+            // sends output to the socket 
+            out    = new DataOutputStream(socket.getOutputStream()); 
+        } 
+        catch(UnknownHostException u) 
+        { 
+            System.out.println(u); 
+        } 
+        catch(IOException i) 
+        { 
+            System.out.println(i); 
+        } 
+
+        // string to read message from input 
+        String line = ""; 
+
+        // keep reading until "Over" is input 
+        while (!line.equals("Over")) 
+        { 
+            try
+            { 
+                line = input.readLine(); 
+                out.writeUTF(line); 
+            } 
+            catch(IOException i) 
+            { 
+                System.out.println(i); 
+            } 
+        } 
+
+        // close the connection 
+        try
+        { 
+            input.close(); 
+            out.close(); 
+            socket.close(); 
+        } 
+        catch(IOException i) 
+        { 
+            System.out.println(i); 
+        } 
+    } 
+
+    public static void main(String args[]) 
+    { 
+        Client client = new Client("127.0.0.1", 5000); 
+    } 
+} 

socket/Server.java

@@ -0,0 +1,62 @@
+
+import java.net.*; 
+import java.io.*; 
+
+public class Server 
+{ 
+    //initialize socket and input stream 
+    private Socket          socket   = null; 
+    private ServerSocket    server   = null; 
+    private DataInputStream in       =  null; 
+
+    // constructor with port 
+    public Server(int port) 
+    { 
+        // starts server and waits for a connection 
+        try
+        { 
+            server = new ServerSocket(port); 
+            System.out.println("Server started"); 
+
+            System.out.println("Waiting for a client ...!!"); 
+
+            socket = server.accept(); 
+            System.out.println("Client accepted Succesfully"); 
+
+            // takes input from the client socket 
+            in = new DataInputStream( 
+                new BufferedInputStream(socket.getInputStream())); 
+
+            String line = ""; 
+
+            // reads message from client until "Over" is sent 
+            while (!line.equals("Over")) 
+            { 
+                try
+                { 
+                    line = in.readUTF(); 
+                    System.out.println(line); 
+
+                } 
+                catch(IOException i) 
+                { 
+                    System.out.println(i); 
+                } 
+            } 
+            System.out.println("Closing connection"); 
+
+            // close connection 
+            socket.close(); 
+            in.close(); 
+        } 
+        catch(IOException i) 
+        { 
+            System.out.println(i); 
+        } 
+    } 
+
+    public static void main(String args[]) 
+    { 
+        Server server = new Server(5000); 
+    } 
+}