Another question on refactoring my NetBeans generated GUI code

Hello all:

It has been a few months since my last question.  Had a lot of other projects taking up my time, but I am back to fighting with my Planetarium lighting controller.  I have it working, but I am sure it could be more efficient and prettier to look at.

Since my last post, I finally figured out how to create an object and was able to remove the global variables I had previously created.  My application now has two files and not just the long single one primarily generated by NetBeans.  This cleaned up my messy code a little, but I know that there is still more I can do.  I have been trying to pull some of the functions I created out of the single file, but I am still not getting something right and I get errors.  The IDE tells me that it cannot find the function if it is located in a separate file.

I want to have the establishConnection() and sendCommand() functions separated because I can actually use them in other programs that access the lighting control without going through the GUI.

I wanted to have the updateControlPanelLampOn() function separated because it would be easier for me to make changes if I did not have to constantly scroll down to where it starts in the long block of code.  When I take this block out, the IDE tells me it cannot find the various controls.

Just not sure what I am doing wrong.

I pasted a portion of the code here and attached it to the post.  There is also a screen capture of what the GUI looks like when it is running.  If anyone can help, I would appreciate it.

Paul

import ECCS.eccsLampDevice;
import java.io.*;
import java.net.*;
import javax.swing.UIManager.*;

public class BasicRGBWCoveGUIWithOOP extends javax.swing.JFrame {
    eccsLampDevice redCove = new eccsLampDevice();
    eccsLampDevice grnCove = new eccsLampDevice();
    eccsLampDevice bluCove = new eccsLampDevice();
    eccsLampDevice rgb0Cove = new eccsLampDevice();

    // IO streams.
    private DataOutputStream toServer;
    private DataInputStream fromServer;    
    
    /** Creates new form AdvancedRGBCoveGUI */
    public BasicRGBWCoveGUIWithOOP() {
        initComponents();
        establishConnection();
    }

    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {
        // Lots of code generated by NetBeans.
    }// </editor-fold>                        

 
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {

    // More code here.
        
    }
    

   public final void establishConnection() {
        try {
            // Create a socket to connect to the server.
            Socket socket = new Socket("192.168.10.250", 4760);

            // Create an input stream to receive data from the server.
            fromServer = new DataInputStream(socket.getInputStream());

            // Create an output stream to send data to the server.
            toServer = new DataOutputStream(socket.getOutputStream());
        }
        catch (IOException ex) {
                System.err.println(ex);
        }
    }
    
    public void sendCommand(String eccsCommand) {
        try {
            toServer.writeBytes(eccsCommand + "\r");
            
            toServer.flush();
        }
        catch (IOException ex) {
            System.err.println(ex);
        }
    }

    public void updateControlPanelLampOn(String deviceCommand, String deviceName) {
        if ("A".equals(deviceName)) {
            jSliderREDCOVE.setValue(redCove.lampLevel);
            jTextFieldREDCOVE.setText(String.valueOf(redCove.lampLevel));
            jSliderRGBCOVE.setValue(rgb0Cove.lampLevel);
            jTextFieldRGBCOVE.setText(String.valueOf(rgb0Cove.lampLevel));
        }
        else if ("B".equals(deviceName)) {
            jSliderGRNCOVE.setValue(grnCove.lampLevel);
            jTextFieldGRNCOVE.setText(String.valueOf(grnCove.lampLevel));
            jSliderRGBCOVE.setValue(rgb0Cove.lampLevel);
            jTextFieldRGBCOVE.setText(String.valueOf(rgb0Cove.lampLevel));
        }
        else if ("C".equals(deviceName)) {
            jSliderBLUCOVE.setValue(bluCove.lampLevel);
            jTextFieldBLUCOVE.setText(String.valueOf(bluCove.lampLevel));
            jSliderRGBCOVE.setValue(rgb0Cove.lampLevel);
            jTextFieldRGBCOVE.setText(String.valueOf(rgb0Cove.lampLevel));
        }
        else if ("ABC".equals(deviceName)) {
            jSliderREDCOVE.setValue(redCove.lampLevel);
            jTextFieldREDCOVE.setText(String.valueOf(redCove.lampLevel));
            jSliderGRNCOVE.setValue(grnCove.lampLevel);
            jTextFieldGRNCOVE.setText(String.valueOf(grnCove.lampLevel));
            jSliderBLUCOVE.setValue(bluCove.lampLevel);
            jTextFieldBLUCOVE.setText(String.valueOf(bluCove.lampLevel));
            jSliderRGBCOVE.setValue(rgb0Cove.lampLevel);
            jTextFieldRGBCOVE.setText(String.valueOf(rgb0Cove.lampLevel));
        }
        sendCommand(deviceCommand + ":100:" + deviceName);
    }
}

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