Client not passing data to server

Question

ok so this time i'm up for a server/client basic connection. I get the codes to compile; however, when i run the server then the client (using 2 different cmd prompts) i get the inputdialog but it hangs from there and does nothing. Its something in the buffer but not sure what.
client:
import javax.swing.JOptionPane;
import java.io.*;
import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class PalindromeIgnoreNonAlphanumeric {
  /** Main method */
  public static void main(String[] args) {
    try{
               Socket socket = new Socket("localhost", 8000);
               DataInputStream in = new DataInputStream(socket.getInputStream());
               DataOutputStream out = new DataOutputStream(socket.getOutputStream());
               // Prompt the user to enter a string
              String s = JOptionPane.showInputDialog("Enter a string:");
               out.writeChars(s);
               out.flush();
               boolean fromserver = in.readBoolean();
               JOptionPane.showMessageDialog(null, "Your input" + s + "was sent to the server, and the server replied.  Is it a palindrome? " + fromserver);
     catch(IOException ex){
          System.err.print(ex);
     finally{
          System.out.print("Connection to server closed");
}server:
import java.io.*;
import java.net.*;
import java.util.*;
import java.awt.*;
import javax.swing.*;
import java.io.InputStream.*;
public class PalindromeServer
     public static void main(String[] args)
          try{
                    /*set the port and tell the server to start accepting sockets*/
                    ServerSocket server = new ServerSocket(8000);
                    Socket socket = server.accept();
                    /* set the In and outputs */
                    BufferedReader input = new BufferedReader(new InputStreamReader(socket.getInputStream()));
                    DataOutputStream output = new DataOutputStream(socket.getOutputStream());
                    /*Read in the data from the client*/
                    String s = input.readLine();
                    output.writeBoolean(isPalindrome(s));
          catch(IOException ex){
               System.err.print(ex);
     /** Return true if a string is a palindrome */
     public static boolean isPalindrome(String s)
          // Create a new string by eliminating non-alphanumeric chars
          String s1 = filter(s);
          // Create a new string that is the reversal of s1
          String s2 = reverse(s1);
          // Compare if the reversal is the same as the original string
          return s2.equals(s1);
     /** Create a new string by eliminating non-alphanumeric chars */
     public static String filter(String s)
          // Create a string buffer
         StringBuilder strBuf = new StringBuilder();
           // Examine each char in the string to skip alphanumeric char
          for (int i = 0; i < s.length(); i++)
               if (Character.isLetterOrDigit(s.charAt(i)))
                       strBuf.append(s.charAt(i));
          // Return a new filtered string
          return strBuf.toString();
     /** Create a new string by reversing a specified string */
     public static String reverse(String s)
          StringBuilder strBuf = new StringBuilder(s);
          strBuf.reverse(); // Use the reverse method for StringBuilder object
         return strBuf.toString();
}

Answer 1

On the client side you send characters. No line break.
Meanwhile the server code is blocking waiting for a line break.
and do look into closing some resources.