Thread: server client upercase

I have to programs: Server and client.
The client would send a string to server. Server uppercase it and sends it back.
I know there is a lot of code on the web on doing this. This is a homework so I am trying to learn what I am doing wrong.
The client has some generated code. Tried to cut out some of it to make it clear.
Img is of the client.
EDIT: before my last code change, I was getting connect denied. Now the client freezes.
EDIT EDIT: Fixed the freeze. Now :Connection timed out: connect
EDIT EDIT EDIT: Looks like it is getting the Connection, but things are not being done.

 
 
package server;
import java.io.*;
import java.net.*;
/**
 *
 * @author Hokina
 */
public class Main {
 
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args)
    {
 
        String InLine; //make string for input
        ServerSocket ser = null;
 
        try {
          ser = new ServerSocket(11234); //consturt the socket for lisining
        }
        catch (IOException e) {
           System.out.println(e);
        }
 
        Socket cli = null;
    try {
           cli = ser.accept(); // Accepts and connects to incoming connections for sending socket
          PrintWriter out = new PrintWriter(cli.getOutputStream(), true); //makes a stream for input
          BufferedReader in = new BufferedReader(new InputStreamReader(cli.getInputStream())); //makes a stream for output
 
 
           // Reads in the line, then outputs the line as upper cased.
           while ((InLine = in.readLine()) !=null)  {
               out.println(InLine.toUpperCase());
           }
 
        }
    catch (IOException e) {
           System.out.println(e);
        }
        try {
        cli.close();
        ser.close();
        }
        catch (IOException e) {
            System.out.println(e);
        }
    }
 
}
}

   private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // Clears text fields
        jTextField1.setText("");
        jTextField2.setText("");
        jTextField3.setText("");
        // TODO add your handling code here:
}                                        
 
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        //make vars
        Socket cli = null;
        BufferedReader read = null;
        PrintWriter out = null;
 
    try {
           cli = new Socket(jTextField1.getText() , 11234); // sets up connetion to server.
           out = new PrintWriter(cli.getOutputStream(), true); // sets up stream for output
           read = new BufferedReader(new InputStreamReader(cli.getInputStream()));
    }
    catch (UnknownHostException e) {
        System.out.println("Failed find hostname");
    }
    catch (IOException e) {
        System.out.println("Failed I/O" + e);
        }
             try {
                out.write(jTextField3.getText() + '\n'); //send text over connection);
             }
             catch (Exception e) {
                 System.out.println("fail" + e);
             }
            try {
                jTextField2.setText(read.readLine()); //trys to read in text form server
                // closes connection
                cli.close();
            }
            catch (IOException e) {
                System.out.println("fail" + e);
            }
 
        try {
        out.close();
        read.close();
        cli.close();
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }                                        
 
    private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        System.exit(0);
    }                                        
}