chat client and server text not receive or send text

i make thread to send and receive  in each client and server but nothing receive or send why??

Gui for program is simple only two textarea in both client and server and 1 button to send text for client to server and server to client

the code is simple but drag and drop create long code

what is error i make ?

and how can i fix ?

Client_Chat.java

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.ObjectInputStream;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.Scanner;
import java.util.logging.Level;
import java.util.logging.Logger;




public class Client_Chat extends javax.swing.JFrame {

/**
 * Creates new form Client_Chat
 */
public Client_Chat() {
    initComponents();
}

/**
 * This method is called from within the constructor to initialize the form.
 * WARNING: Do NOT modify this code. The content of this method is always
 * regenerated by the Form Editor.
 */
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">                          
private void initComponents() {

    jLabel1 = new javax.swing.JLabel();
    jLabel2 = new javax.swing.JLabel();
    jButton1 = new javax.swing.JButton();
    jScrollPane1 = new javax.swing.JScrollPane();
    jTextArea1 = new javax.swing.JTextArea();
    jScrollPane2 = new javax.swing.JScrollPane();
    jTextArea2 = new javax.swing.JTextArea();

    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

    jLabel1.setText("Server");

    jLabel2.setText("Client");

    jButton1.setText("Send");
    jButton1.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            jButton1ActionPerformed(evt);
        }
    });

    jTextArea1.setColumns(20);
    jTextArea1.setRows(5);
    jScrollPane1.setViewportView(jTextArea1);

    jTextArea2.setColumns(20);
    jTextArea2.setRows(5);
    jScrollPane2.setViewportView(jTextArea2);

    javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
    getContentPane().setLayout(layout);
    layout.setHorizontalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(layout.createSequentialGroup()
            .addContainerGap()
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                .addGroup(layout.createSequentialGroup()
                    .addComponent(jLabel2)
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 266, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGroup(layout.createSequentialGroup()
                    .addComponent(jLabel1)
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 19, Short.MAX_VALUE)
                    .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 266, javax.swing.GroupLayout.PREFERRED_SIZE)))
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(jButton1)
            .addContainerGap())
    );
    layout.setVerticalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(layout.createSequentialGroup()
            .addContainerGap(156, Short.MAX_VALUE)
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                    .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 29, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGap(46, 46, 46)
                    .addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 58, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                    .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 36, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGap(25, 25, 25))
                .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                    .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGap(18, 18, 18)
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 49, javax.swing.GroupLayout.PREFERRED_SIZE)))
            .addContainerGap())
    );

    pack();
}// </editor-fold>                        

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)   {                                         
    // TODO add your handling code here:
    String str=jTextArea1.getText();
    Socket connectToServer;
    try {
        connectToServer = new Socket("localhost", 8000);
        HandleAClient write = new HandleAClient(connectToServer,str);

    // Start the new thread
            write.start();
    } catch (IOException ex) {

    }

}                                        

/**
 * @param args the command line arguments
 */
public static void main(String args[]) throws Exception {
    /* Set the Nimbus look and feel */
    //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
    /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
     * For details see http://ift.tt/1cNmMj1 
     */



    try {
        for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
            if ("Nimbus".equals(info.getName())) {
                javax.swing.UIManager.setLookAndFeel(info.getClassName());
                break;
            }
        }
    } catch (ClassNotFoundException ex) {
        java.util.logging.Logger.getLogger(Client_Chat.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (InstantiationException ex) {
        java.util.logging.Logger.getLogger(Client_Chat.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (IllegalAccessException ex) {
        java.util.logging.Logger.getLogger(Client_Chat.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (javax.swing.UnsupportedLookAndFeelException ex) {
        java.util.logging.Logger.getLogger(Client_Chat.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    }
    //</editor-fold>

    /* Create and display the form */
    java.awt.EventQueue.invokeLater(new Runnable() {
        public void run() {
            new Client_Chat().setVisible(true);
            Socket connectToServer;
            try {
                connectToServer = new Socket("localhost", 8000);
                HandleAClient1 thread2 = new HandleAClient1(connectToServer);
    thread2.start();
    String str=thread2.recieve();
    jTextArea2.append(str+"\n");
            } catch (IOException ex) {
                Logger.getLogger(Client_Chat.class.getName()).log(Level.SEVERE, null, ex);
            }




        }
    });
}

// Variables declaration - do not modify                     
public javax.swing.JButton jButton1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
public static javax.swing.JTextArea jTextArea1;
public static javax.swing.JTextArea jTextArea2;
// End of variables declaration                   

}
class HandleAClient1 extends Thread {
private Socket connectToClient; // A connected socket
String str;
/** Construct a thread */
public HandleAClient1(Socket socket) {
  connectToClient = socket;
}

/** Run a thread */
public void run() {
  try {
      BufferedReader in=new BufferedReader(new InputStreamReader(connectToClient.getInputStream()));
       //ObjectInputStream readfromserver = new ObjectInputStream(connectToClient.getInputStream());
       //System.out.println(in.readLine());

       //chat.append("server: "+in.readLine()+"\n");
      //DataInputStream input=new DataInputStream(connectToClient.getInputStream());
    while (true) {

      //Scanner s=new Scanner(System.in);
       str=in.readLine();



    }
  }
  catch(IOException e) {
    System.err.println(e);
  }
}
 public String recieve()
  {
    return str;
  }
  }

class HandleAClient extends Thread {
private Socket connectToClient;
private String str;

/** Construct a thread */
public HandleAClient(Socket socket,String s) {
  connectToClient = socket;
  str=s;
}

/** Run a thread */
public void run() {
  try {
      PrintWriter os=new PrintWriter(connectToClient.getOutputStream());

        //chat.append("client: "+clientTextArea.getText()+"\n");
      //DataOutputStream output=new DataOutputStream(connectToClient.getOutputStream());
    while (true) {
      os.println(str);
      os.flush();

    }
  }
  catch(IOException e) {
    System.err.println(e);
  }
}
}

and Server is

Server_chat.Java

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Scanner;
import java.util.logging.Level;
import java.util.logging.Logger;


 public class Server_Chat extends javax.swing.JFrame {

/**
 * Creates new form Server_Chat
 */
public Server_Chat() {
    initComponents();
}

/**
 * This method is called from within the constructor to initialize the form.
 * WARNING: Do NOT modify this code. The content of this method is always
 * regenerated by the Form Editor.
 */
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">                          
private void initComponents() {

    jLabel1 = new javax.swing.JLabel();
    jLabel2 = new javax.swing.JLabel();
    jButton1 = new javax.swing.JButton();
    jScrollPane1 = new javax.swing.JScrollPane();
    jTextArea1 = new javax.swing.JTextArea();
    jScrollPane2 = new javax.swing.JScrollPane();
    jTextArea2 = new javax.swing.JTextArea();

    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

    jLabel1.setText("Server");

    jLabel2.setText("Client");

    jButton1.setText("Send");
    jButton1.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent evt) {
            jButton1ActionPerformed(evt);
        }
    });

    jTextArea1.setColumns(20);
    jTextArea1.setRows(5);
    jScrollPane1.setViewportView(jTextArea1);

    jTextArea2.setColumns(20);
    jTextArea2.setRows(5);
    jScrollPane2.setViewportView(jTextArea2);

    javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
    getContentPane().setLayout(layout);
    layout.setHorizontalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(layout.createSequentialGroup()
            .addContainerGap()
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                .addGroup(layout.createSequentialGroup()
                    .addComponent(jLabel2)
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 266, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGroup(layout.createSequentialGroup()
                    .addComponent(jLabel1)
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 46, Short.MAX_VALUE)
                    .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 266, javax.swing.GroupLayout.PREFERRED_SIZE)))
            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
            .addComponent(jButton1)
            .addContainerGap())
    );
    layout.setVerticalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(layout.createSequentialGroup()
            .addContainerGap(187, Short.MAX_VALUE)
            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                    .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 29, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGap(46, 46, 46)
                    .addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 58, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                    .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 36, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGap(25, 25, 25))
                .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                    .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGap(18, 18, 18)
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 49, javax.swing.GroupLayout.PREFERRED_SIZE)))
            .addContainerGap())
    );

    pack();
}// </editor-fold>                        

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
    // TODO add your handling code here:
    String str=jTextArea1.getText();

    try {
       // connectToServer = new Socket("localhost", 8000);
        ServerSocket serverSocket=new ServerSocket(8000);

        Socket socket = serverSocket.accept();
        HandleAClient write = new HandleAClient(socket,str);

        // Start the new thread
        write.start();
    } catch (IOException ex) {

    }



   }                                        

/**
 * @param args the command line arguments
 */
public static void main(String args[]) throws Exception{
    /* Set the Nimbus look and feel */
    //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
    /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
     * For details see http://ift.tt/1cNmMj1 
     */

    try {
        for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
            if ("Nimbus".equals(info.getName())) {
                javax.swing.UIManager.setLookAndFeel(info.getClassName());
                break;
            }
        }
    } catch (ClassNotFoundException ex) {
        java.util.logging.Logger.getLogger(Server_Chat.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (InstantiationException ex) {
        java.util.logging.Logger.getLogger(Server_Chat.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (IllegalAccessException ex) {
        java.util.logging.Logger.getLogger(Server_Chat.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (javax.swing.UnsupportedLookAndFeelException ex) {
        java.util.logging.Logger.getLogger(Server_Chat.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    }
    //</editor-fold>

    /* Create and display the form */
    java.awt.EventQueue.invokeLater(new Runnable() {
        public void run() {
            new Server_Chat().setVisible(true);
            ServerSocket serverSocket;
            try {
                serverSocket = new ServerSocket(8000);
                 Socket socket = serverSocket.accept();
                HandleAClient1 thread2 = new HandleAClient1(socket);
                thread2.start();
                String str=thread2.recieve();
                jTextArea2.append(str+"\n");
            } catch (IOException ex) {
                Logger.getLogger(Server_Chat.class.getName()).log(Level.SEVERE, null, ex);
            }



        }
    });
  }

// Variables declaration - do not modify                     
public javax.swing.JButton jButton1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
public static javax.swing.JTextArea jTextArea1;
public static javax.swing.JTextArea jTextArea2;
// End of variables declaration                   
}
class HandleAClient1 extends Thread {
private Socket connectToClient; // A connected socket
String str;
/** Construct a thread */
public HandleAClient1(Socket socket) {
  connectToClient = socket;
}

/** Run a thread */
public void run() {
  try {
      BufferedReader in=new BufferedReader(new InputStreamReader(connectToClient.getInputStream()));
       //ObjectInputStream readfromserver = new ObjectInputStream(connectToClient.getInputStream());
       //System.out.println(in.readLine());
           //chat.append("server: "+in.readLine()+"\n");
      //DataInputStream input=new DataInputStream(connectToClient.getInputStream());
    while (true) {

      //Scanner s=new Scanner(System.in);
       str=in.readLine();



    }
  }
  catch(IOException e) {
    System.err.println(e);
  }
}
 public String recieve()
 {
    return str;
 }
 }

 class HandleAClient extends Thread {
 private Socket connectToClient;
 private String str;

/** Construct a thread */
public HandleAClient(Socket socket,String s) {
  connectToClient = socket;
  str=s;
}

/** Run a thread */
public void run() {
  try {
      PrintWriter os=new PrintWriter(connectToClient.getOutputStream());

        //chat.append("client: "+clientTextArea.getText()+"\n");
      //DataOutputStream output=new DataOutputStream(connectToClient.getOutputStream());
    while (true) {
      os.println(str);
      os.flush();

    }
  }
  catch(IOException e) {
    System.err.println(e);
  }
  }
 }