JInternalFrame size issue

Question

I'm trying to make an IDE, and have started trying to create a nopepad type editor. My problem occurs when clicking new to create a new internal frame, the frame is created to be the same size as a maximised internal frame would be. I've tryed adding setBounds, setSize, setPreferredSize, setMaximumSize, setMinimumSize functions to the frame, but to no avail. This is the full listing of my code:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.text.*;
   Java IDE (Integrated Development Environment)
   IDE.java
   Sets up constants and main viewing frame.
   Advanced 2nd Year HND Project
   @author Mark A. Standen
   @Version 0.2 18/04/2002
//=========================================================
//   Main (public class)
//=========================================================
public class IDE extends JFrame
      Application Wide Constants
   /**   The Name of the Application   */
   private static final String APPLICATION_NAME = "Java IDE";
   /**   The Application Version   */
   private static final String APPLICATION_VERSION = "0.2";
   /**   The Inset from the edges of the screen of the main viewing frame   */
   private static final int INSET = 50;
   /**   The main frame   */
   private static IDE frame;
      MAIN
   public static void main (String[] Arguments)
      //Adds Cross-Platform functionality by adapting GUI
      try
         UIManager.setLookAndFeel( UIManager.getSystemLookAndFeelClassName() );
         //Adapts to current system look and feel - e.g. windows
      catch (Exception e) {System.err.println("Can't set look and feel: " + e);}
      frame = new IDE();
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.setVisible(true);
      This Constructor creates an instance of Main, the main view frame.
      @param sizeX Width of the main view Frame in pixels
      @param sizeY Height of the main view Frame in pixels
   public IDE()
      super (APPLICATION_NAME + " (Version " + APPLICATION_VERSION + ")");
      Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
      this.setBounds( INSET, INSET, screenSize.width - (INSET * 2), screenSize.height - (INSET * 3) );
      JDesktopPane mainPane = new JDesktopPane();
      mainPane.setDragMode(JDesktopPane.OUTLINE_DRAG_MODE);
      this.setContentPane(mainPane);
      this.getContentPane().setLayout( new BorderLayout() );
      this.getContentPane().add("North", new ToolBar() );
//===================================================================
//   ToolBar (private class)
//===================================================================
   private class ToolBar extends JToolBar implements ActionListener
      /*   Create toolbar buttons   */
      private JButton newBox;
      private JButton load;
      private JButton save;
         Creates an un-named toolbar,
         with New, Load, and Save options.
      public ToolBar () {
            Use to make toolbar look nice later on
            ImageIcon imageNew = new ImageIcon("imgNew.gif");
            JButton toolbarNew = new JButton(imageNew);  
            ImageIcon imageLoad = new ImageIcon("imgLoad.gif");
            JButton toolbarLoad = new JButton(imageLoad);  
            ImageIcon imageSave = new ImageIcon("imgSave.gif");
            JButton toolbarSave = new JButton(imageSave);
            temp toolbar buttons for now
         newBox = new JButton("New");
         load = new JButton("Load");
         save = new JButton("Save");
         this.setFloatable(false);
         this.setOrientation(JToolBar.HORIZONTAL);
         this.add(newBox);
         this.add(load);
         this.add(save);
         newBox.addActionListener(this);
         load.addActionListener(this);
         save.addActionListener(this);
         Checks for button presses, and calls the relevant functions
      public void actionPerformed (ActionEvent event)
         Object source = event.getSource();
         /*   If new has been clicked   */
         if (source == newBox)
            TextDisplayFrame textBox = new TextDisplayFrame();
            Rectangle rect = this.getParent().getBounds();
            textBox.setBounds( rect.x - INSET, rect.y - INSET, rect.width - (INSET * 2), rect.height - (INSET * 2) );
            this.getParent().add(textBox);
            textBox.setVisible(true);
         /*   If load has been clicked   */
         else if (source == load)
            TextDisplayFrame textBox = new TextDisplayFrame();
            frame.getContentPane().add(textBox);
            System.out.println(textBox + "");
            textBox.loadDoc();
         /*   If save has been clicked   */
         else if (source == save)
//====================================================================
//   Menu (private class)
//====================================================================
   private class Menu extends JMenu
      public Menu()
         JMenuBar menuBar = new JMenuBar();
         JMenu menu = new JMenu("Document");
         menu.setMnemonic(KeyEvent.VK_D);
         JMenuItem menuItem = new JMenuItem("New");
         menuItem.setMnemonic(KeyEvent.VK_N);
         menuItem.addActionListener(new ActionListener()
               public void actionPerformed(ActionEvent e)
                  TextDisplayFrame textBox = new TextDisplayFrame();
                  //this.getContentPane().add(textBox);
         menu.add(menuItem);
         menuBar.add(menu);
         menuBar.setVisible(true);
//====================================================================
//   TextDisplayFrame (private class)
//====================================================================
   private class TextDisplayFrame extends JInternalFrame
      /**   The Default Title of an internal pane   */
      private static final String DEFAULT_TITLE = "untitled";
      /**   Path to the current File   */
      private File filePath = new File ("C:" + File.separatorChar + "test.txt");
      /*   Swing Components   */
      private JTextArea mainTextArea;
      private JScrollPane scrollPane;
         Creates a TextDisplayFrame with the given arguments
         @param title Title of the TextDisplayFrame
      public TextDisplayFrame(String title)
         super(title, true, true, true, true); //creates resizable, closable, maximisable, and iconafiable internal frame
         this.setContentPane( textBox() );
         this.setPreferredSize( new Dimension (150, 100) );
         this.setMaximumSize( new Dimension (300, 300) );
         this.setVisible(true);
         Creates a resizable frame with the default title
      public TextDisplayFrame()
         this(DEFAULT_TITLE);
         Creates a blank, resizable central text area, for the entering of text
         @return Returns a JPanel object
      private JPanel textBox()
         mainTextArea = new JTextArea( new PlainDocument() );
         mainTextArea.setLineWrap(false);
         mainTextArea.setFont( new Font("monospaced", Font.PLAIN, 14) );
         scrollPane = new JScrollPane( mainTextArea );
         JPanel pane = new JPanel();
         BorderLayout bord = new BorderLayout();
         pane.setLayout(bord);
         pane.add("Center", scrollPane);
         return pane;
         @return Returns a JTextComponent to be used as document object
      public JTextComponent getDoc()
         return mainTextArea;
      public void loadDoc()
         /* Create blank Document */
         Document textDoc = new PlainDocument();
         /* Attempt to load the document in the filePath into the blank Document object*/
         try
            Reader fileInput = new FileReader(filePath);
            char[] charBuffer = new char[1000];
            int numChars;
            while (( numChars = fileInput.read( charBuffer, 0, charBuffer.length )) != -1 )
               textDoc.insertString(textDoc.getLength(), new String( charBuffer, 0, numChars ), null);
         catch (IOException error) {System.out.println(error); }
         catch (BadLocationException error) {System.out.println(error); }
         /* Set the loaded document to be the text of the JTextArea */
         this.getDoc().setDocument( textDoc );
}I would appreciate all/any help that can be offered.

Answer 1

i have tried out your source and have made some modifications and now it works fine.
move the desktoppane to be a private variable of the class, so that you can add the InternalFrame to it directly. also the setBounds() needs to be given lil' corrections to c that the InternalFrame appear on the visible area.
i'm posting entire source just to make sure you don't confuse abt the changes. This is a working version. Hope it serves.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.text.*;
Java IDE (Integrated Development Environment)
IDE.java
Sets up constants and main viewing frame.
Advanced 2nd Year HND Project
@author Mark A. Standen
@Version 0.2 18/04/2002
//=========================================================
// Main (public class)
//=========================================================
public class IDE extends JFrame
Application Wide Constants
/** The Name of the Application */
private static final String APPLICATION_NAME = "Java IDE";
/** The Application Version */
private static final String APPLICATION_VERSION = "0.2";
/** The Inset from the edges of the screen of the main viewing frame */
private static final int INSET = 50;
/** The main frame */
private static IDE frame;
/*********** CHANGED HERE ****************/
private JDesktopPane mainPane;
/*********** END CHANGE ****************/
MAIN
public static void main (String[] Arguments)
//Adds Cross-Platform functionality by adapting GUI
try
UIManager.setLookAndFeel( UIManager.getSystemLookAndFeelClassName() );
//Adapts to current system look and feel - e.g. windows
catch (Exception e) {System.err.println("Can't set look and feel: " + e);}
frame = new IDE();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
This Constructor creates an instance of Main, the main view frame.
@param sizeX Width of the main view Frame in pixels
@param sizeY Height of the main view Frame in pixels
public IDE()
super (APPLICATION_NAME + " (Version " + APPLICATION_VERSION + ")");
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
this.setBounds( INSET, INSET, screenSize.width - (INSET * 2), screenSize.height - (INSET * 3) );
          /*********** CHANGED HERE ****************/
mainPane = new JDesktopPane();
mainPane.setDragMode(JDesktopPane.OUTLINE_DRAG_MODE);
//this.setContentPane(mainPane);
this.getContentPane().setLayout( new BorderLayout() );
this.getContentPane().add(new ToolBar(), java.awt.BorderLayout.NORTH);
     this.getContentPane().add(mainPane, java.awt.BorderLayout.CENTER);
     /*********** END CHANGE ****************/
//===================================================================
// ToolBar (private class)
//===================================================================
private class ToolBar extends JToolBar implements ActionListener
/* Create toolbar buttons */
private JButton newBox;
private JButton load;
private JButton save;
Creates an un-named toolbar,
with New, Load, and Save options.
public ToolBar () {
Use to make toolbar look nice later on
ImageIcon imageNew = new ImageIcon("imgNew.gif");
JButton toolbarNew = new JButton(imageNew);
ImageIcon imageLoad = new ImageIcon("imgLoad.gif");
JButton toolbarLoad = new JButton(imageLoad);
ImageIcon imageSave = new ImageIcon("imgSave.gif");
JButton toolbarSave = new JButton(imageSave);
temp toolbar buttons for now
newBox = new JButton("New");
load = new JButton("Load");
save = new JButton("Save");
this.setFloatable(false);
this.setOrientation(JToolBar.HORIZONTAL);
this.add(newBox);
this.add(load);
this.add(save);
newBox.addActionListener(this);
load.addActionListener(this);
save.addActionListener(this);
Checks for button presses, and calls the relevant functions
public void actionPerformed (ActionEvent event)
Object source = event.getSource();
/* If new has been clicked */
if (source == newBox)
TextDisplayFrame textBox = new TextDisplayFrame();
Rectangle rect = mainPane.getBounds();
/*********** CHANGED HERE ****************/
//textBox.setBounds( rect.x - INSET, rect.y - INSET, rect.width - (INSET * 2), rect.height - (INSET * 2) );
//this.getParent().add(textBox);
mainPane.add(textBox, javax.swing.JLayeredPane.DEFAULT_LAYER);
textBox.setBounds(rect.x, rect.y, 500, 500);
/*********** END CHANGE ****************/
textBox.setVisible(true);
/* If load has been clicked */
else if (source == load)
TextDisplayFrame textBox = new TextDisplayFrame();
frame.getContentPane().add(textBox);
System.out.println(textBox + "");
textBox.loadDoc();
/* If save has been clicked */
else if (source == save)
//====================================================================
// Menu (private class)
//====================================================================
private class Menu extends JMenu
public Menu()
JMenuBar menuBar = new JMenuBar();
JMenu menu = new JMenu("Document");
menu.setMnemonic(KeyEvent.VK_D);
JMenuItem menuItem = new JMenuItem("New");
menuItem.setMnemonic(KeyEvent.VK_N);
menuItem.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent e)
TextDisplayFrame textBox = new TextDisplayFrame();
//this.getContentPane().add(textBox);
menu.add(menuItem);
menuBar.add(menu);
menuBar.setVisible(true);
//====================================================================
// TextDisplayFrame (private class)
//====================================================================
private class TextDisplayFrame extends JInternalFrame
/** The Default Title of an internal pane */
private static final String DEFAULT_TITLE = "untitled";
/** Path to the current File */
private File filePath = new File ("C:" + File.separatorChar + "test.txt");
/* Swing Components */
private JTextArea mainTextArea;
private JScrollPane scrollPane;
Creates a TextDisplayFrame with the given arguments
@param title Title of the TextDisplayFrame
public TextDisplayFrame(String title)
super(title, true, true, true, true); //creates resizable, closable, maximisable, and iconafiable internal frame
this.setContentPane( textBox() );
this.setPreferredSize( new Dimension (150, 100) );
/*********** CHANGED HERE ****************/
//this.setMaximumSize( new Dimension (300, 300) );
this.setNormalBounds(new Rectangle(300,300));
/*********** END CHANGE ****************/
this.setVisible(true);
Creates a resizable frame with the default title
public TextDisplayFrame()
this(DEFAULT_TITLE);
Creates a blank, resizable central text area, for the entering of text
@return Returns a JPanel object
private JPanel textBox()
mainTextArea = new JTextArea( new PlainDocument() );
mainTextArea.setLineWrap(false);
mainTextArea.setFont( new Font("monospaced", Font.PLAIN, 14) );
scrollPane = new JScrollPane( mainTextArea );
JPanel pane = new JPanel();
BorderLayout bord = new BorderLayout();
pane.setLayout(bord);
pane.add("Center", scrollPane);
return pane;
@return Returns a JTextComponent to be used as document object
public JTextComponent getDoc()
return mainTextArea;
public void loadDoc()
/* Create blank Document */
Document textDoc = new PlainDocument();
/* Attempt to load the document in the filePath into the blank Document object*/
try
Reader fileInput = new FileReader(filePath);
char[] charBuffer = new char[1000];
int numChars;
while (( numChars = fileInput.read( charBuffer, 0, charBuffer.length )) != -1 )
textDoc.insertString(textDoc.getLength(), new String( charBuffer, 0, numChars ), null);
catch (IOException error) {System.out.println(error); }
catch (BadLocationException error) {System.out.println(error); }
/* Set the loaded document to be the text of the JTextArea */
this.getDoc().setDocument( textDoc );