How do I modify a specific component within a active internalframe?

[LearningJavaASAP]

Hello everybody,

I am still learning java at this point, but I seem to have surpassed the 3 java books I own.

I have an issue here that I am confident that most of you can answer.

I am attempting to change the icon of a button in a internalframe when pressed. The code below shows the text of a button changing (but only the last iframe is being changed, not the active iframe). By answering this question I will understand how to interact with internal frames.
Here is a stripped down version of the code:

Code:

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JInternalFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.OverlayLayout;
import javax.swing.ScrollPaneConstants;
import javax.swing.UIManager;
import javax.swing.event.InternalFrameEvent;
import javax.swing.event.InternalFrameListener;

public class TestFrameButton extends JDesktopPane{

	private static final long serialVersionUID = 1L;
	JDesktopPane desk;
	JDesktopPane ifdesk;
	JScrollPane scrollpane;
	JInternalFrame iframe;
	JFrame frame;
	JList jList1;
	JInternalFrame currentframe;
	Integer currentframenumber;
	String currentframename;
	Boolean[] downuptracker;
	Integer deskwidth = 1000;
	Integer deskheight = 1000;
	Integer scrollwidth = 1000;
	Integer scrollheight = 1000;
	JButton DownUpButton;

	public static void main(String[] args) {
		TestFrameButton d = new TestFrameButton();
	}
	public TestFrameButton(){
		downuptracker = new Boolean [99];
		frame = new JFrame("Test Frame Button");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		scrollpane = new JScrollPane(desk,
				ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,
				ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
		scrollpane.setPreferredSize(new java.awt.Dimension(scrollwidth, scrollheight));
		desk = new JDesktopPane();
		desk.setPreferredSize(new java.awt.Dimension(deskwidth, deskheight));
		int i = 5;
		for (int j = 0; j <= i; j++){
			UIManager.getDefaults().put("InternalFrame.icon", "");
			iframe = new JInternalFrame("Internal Frame: " + j, false, true, false, false);
			iframe.setName(String.valueOf(j));
			iframe.setBounds(30*j, 30*j,265 , 80);
			iframe.addInternalFrameListener(new InternalFrameListener(){
				public void internalFrameClosing(InternalFrameEvent e) {
				}
				public void internalFrameClosed(InternalFrameEvent e) {
				}
				public void internalFrameOpened(InternalFrameEvent e) {
				}
				public void internalFrameIconified(InternalFrameEvent e) {
				}
				public void internalFrameDeiconified(InternalFrameEvent e) {
				}
				public void internalFrameActivated(InternalFrameEvent e) {
					currentframe = e.getInternalFrame();
					currentframename = e.getInternalFrame().getName();
					currentframenumber = Integer.valueOf(currentframename);
				}
				public void internalFrameDeactivated(InternalFrameEvent e) {
				}
			});
			iframe.setTitle("Internal Frame :" + j);
			iframe.setVisible(true);
			downuptracker[j] = true;
			ifdesk = new JDesktopPane();
			iframe.getContentPane().add(ifdesk, BorderLayout.CENTER);
			DownUpButton = new JButton("Old Icon here");
			ifdesk.add(DownUpButton);
			DownUpButton.setBounds(0, 0, 130, 20);
			DownUpButton.addActionListener(new ActionListener() {
				public void actionPerformed(ActionEvent e) {
					if (downuptracker[currentframenumber].equals(true)){
						// Colapse frame here and change icon
						DownUpButton.setText("New Icon here");
						downuptracker[currentframenumber] = false;

					}else{
						// Expand frame here and change icon
						DownUpButton.setText("Old Icon here");
						downuptracker[currentframenumber] = true;
					}
				}
			});             
			desk.add(iframe);
			iframe.moveToFront();
		}
		scrollpane.setViewportView(desk);
		frame.add(scrollpane);
		scrollpane.setVisible(true);
		frame.setSize(800,600);
		frame.setVisible(true);
	}
}

Thank you in advance.

[hardwired]

Code:

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;

public class TFB {
    private static final long serialVersionUID = 1L;
    JDesktopPane desk;
    JDesktopPane ifdesk;
    JScrollPane scrollpane;
    JInternalFrame iframe;
    JFrame frame;
    JList jList1;
    JInternalFrame currentframe;
    Integer currentframenumber;
    String currentframename;
    Boolean[] downuptracker;
    Integer deskwidth = 1000;
    Integer deskheight = 1000;
    Integer scrollwidth = 1000;
    Integer scrollheight = 1000;
    JButton DownUpButton;

    public static void main(String[] args) {
        new TFB();
    }

    public TFB(){
        downuptracker = new Boolean [99];
        frame = new JFrame("Test Frame Button");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        scrollpane = new JScrollPane(desk,
            ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,
            ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
        scrollpane.setPreferredSize(new Dimension(scrollwidth, scrollheight));
        // If you're going to make a new JDesktopPane here there is
        // no need to have the enclosing class extend JDesktopPane.
        desk = new JDesktopPane();
        desk.setPreferredSize(new Dimension(deskwidth, deskheight));
        // Only need to do this one time.
        UIManager.getDefaults().put("InternalFrame.icon", "");
        int i = 5;
        for (int j = 0; j <= i; j++){
//            UIManager.getDefaults().put("InternalFrame.icon", "");
            iframe = new JInternalFrame("Internal Frame: " + j,                   

                       false, true, false, false);
            iframe.setName(String.valueOf(j));
            iframe.setBounds(30*j, 30*j,265 , 80);
            iframe.addInternalFrameListener(new InternalFrameListener(){
                public void internalFrameClosing(InternalFrameEvent e) {}
                public void internalFrameClosed(InternalFrameEvent e) {}
                public void internalFrameOpened(InternalFrameEvent e) {}
                public void internalFrameIconified(InternalFrameEvent e) {}
                public void internalFrameDeiconified(InternalFrameEvent e) {}

                public void internalFrameActivated(InternalFrameEvent e) {
                    currentframe = e.getInternalFrame();
                    currentframename = e.getInternalFrame().getName();
                    currentframenumber = Integer.valueOf(currentframename);
                    System.out.println("activatedFrame name = " +
                                        currentframename);
                }
                public void internalFrameDeactivated(InternalFrameEvent e) {}
            });
            iframe.setTitle("Internal Frame :" + j);
            iframe.setVisible(true);
            downuptracker[j] = true;
//            ifdesk = new JDesktopPane();
//            iframe.getContentPane().add(ifdesk, BorderLayout.CENTER);
            DownUpButton = new JButton("Old Icon here");
//            ifdesk.add(DownUpButton);
            iframe.setLayout(null);
            DownUpButton.setBounds(0, 0, 130, 20);
            iframe.getContentPane().add(DownUpButton);
            DownUpButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    // Try getting a reference to the button that
                    // sent this event:
                    JButton button = (JButton)e.getSource();
                    if (downuptracker[currentframenumber].equals(true)) {
                        // Colapse frame here and change icon
                        // Since DownUpButton has been declared as a
                        // member variable in class scope this reference
                        // to "DownUpButton" will always refer/point to
                        // the last instance created.
                        //DownUpButton.setText("New Icon here");
                        button.setText("New Icon here");
                        downuptracker[currentframenumber] = false;
                    }else{
                        // Expand frame here and change icon
                        //DownUpButton.setText("Old Icon here");
                        button.setText("Old Icon here");
                        downuptracker[currentframenumber] = true;
                    }
                }
            });
            desk.add(iframe);
            iframe.moveToFront();
        }
        scrollpane.setViewportView(desk);
        frame.add(scrollpane);
//        scrollpane.setVisible(true);
        frame.setSize(800,600);
        frame.setVisible(true);
    }
}