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, TEXT COMPONENTS • Topics in This Chapter • Text Fields.Text Areas, and Password Fields • Events and Text Selections • Inside theText Components • Getting Multiple View of a Document with JSplitPane • Styled Documents: JTextPane and JEditorPane
The Swing package includes replacements for the AWT Text Fie Id and TextArea components, which provide all of the functionality of the originals with a (nearly) compatible interface. These controls are, however, built on a very rich infrastructure that allows you to do much more with them than was possible with their predecessors. This chapter looks first at the features that JTextField and JTextArea provide for applications that want a simple input field or a simple way of displaying plain text, then moves on to examine the underlying document infrastructure and the more complex JTextPane and JEditorPane controls. Simple Text Controls Although the text components are built on a complex infrastructure that you'll see later, it is possible to use some of them in a very straightforward manner without having to understand what goes on under the hood. The first half of this chapter looks at the three text components to which this applies, JTextField, JTextArea, and JPasswordField. 1007
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KIM TOPLEY Prentice Hall PTR, Upper
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For my family, Berys, Andrew, and K
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viii Contents PART ONE: FROM AWT TO
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: X Contents Toolbars 684 Actions a
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xii Contents The Look-and-Feel and
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xiv Figures Figure 3-1 The FlowLayo
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XVI Figures Figure 5-4 Using accele
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XVIII Figures Figure 8-1 3 The JLis
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XX Figures Figure 12-8 Four desktop
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xxii Preface components and the var
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xxiv Preface How This Book Is Organ
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xxvi Preface for a choice to be mad
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xxviii Preface Conventions Used in
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xxx Preface Having installed the ex
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xxxii Preface Running the Examples
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xxxiv Preface Instructions for inst
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xxxvi Preface installed (c:\CoreJFC
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xxxviii Preface Feedback No book is
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f xl Preface for a book to a small
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FROM AWT TO SWING
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INTRODUCTION TO THE JAVA FOUNDATION
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Chapter I Introduction to the Java
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8 Chapter I Introduction to the Jav
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10 Chapter I Introduction to the Ja
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FRAMES, IAKIA AND BUTTONS • The J
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58 Chapter 2 Frames, Labels, and Bu
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• 80 Chapter 2 Frames, Labels, an
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100 Chapter 2 Frames, Labels, and B
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1S6 Chapter 2 Frames, Labels, and B
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So far, you've seen how to create a
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Listing 3-1 Using the FlowLayout ma
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Layout Managers 169 resizes the fra
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Layout Managers 171 required horizo
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Layout Managers 173 Figure 3-7 The
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layouts that work in locales with d
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Listing 3-3 BorderLayout with an ex
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Figure 3-11 Inappropriate use of rh
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Listing 3—4 Producing a calculato
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Layout Managers 183 Whether or not
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Layout Managers 185 top left. At th
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Layout Managers 187 structed—the
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Layout Managers 189 This is, of cou
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Layout Managers 191 I think you'll
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Layout Managers 193 copy of the con
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Layout Managers 195 instead change
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Figure 3-19 GridBagLayout: with ext
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Layout Managers 199 see from Figure
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GridBagConstraints .NORTH GridBagCo
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Listing 3-9 GridBagLayout using anc
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Table 3-1 Fields of the GridBagCons
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Layout Managers 207 As for the vert
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Listing 3-10 Implementing a form-ty
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Core Warning Unlike the other Swing
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public static Component createRigid
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Glue Layout Managers 215 The last s
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Figure 3-25 BoxLayout and Component
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Layout Managers 219 How does this e
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Left Panel CENTER_ALIGNMENT Middle
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Layout Managers 223 At this point,
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Layout Managers 225 DebugGraphics f
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setDoubleBufferEnabled(false); As y
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public static Color flashColor(); p
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[x=0,y=0,width=6 9,height = 23 ] Gr
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Core Note The issue of component al
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as its maximum size multiplied by i
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You can try this example for yourse
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Listing 3-16 Using the CardLayout m
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Locale-Dependent Ordering of Text a
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UNKNOWN This value is used as a def
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ComponentOrientation.getOrientation
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Component Orientation 247 both Java
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Component Orientation 249 tOrientat
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JMenuItem JProgressBar (Java 2 vers
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Component Orientation 253 p.setLayo
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Component Orientation 255 now, thes
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Working with the Application Window
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Listing 3-17 Handling window events
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Table 3^4 Component Events (continu
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Listing 3-20 Handling component eve
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when they are available, using faci
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In the last two chapters, you have
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A Graphics Application 285 techniqu
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Figure 4-1 Drawing text on a JPanel
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A Graphics Application 289 text in
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Figure 4-2 Changing the font and co
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Figure 4-3 Using drawLine to draw s
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A Graphics Application 295 the shap
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Listing 4-5 Drawing rectangles (con
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Listing 4-6 Drawing arcs and ovals
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Figure 4-6 Drawing arcs and ellipse
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Listing 4-7 Drawing filled shapes (
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Listing 4-8 Drawing filled 3D shape
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End of line from x = 240, y = 0 (se
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Listing 4-9 Using two Graphics obje
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The getGraphics method A Graphics A
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A Graphics Application 313 work eve
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Listing 4-1 I Properties of a graph
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A Graphics Application 317 color, w
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A Graphics Application 319 First, t
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Figure 4-11 A graphics application.
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A Graphics Application 323 The draw
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A Graphics Application 325 events d
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A Graphics Application 327 To retur
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A Graphics Application 329 on the b
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A Graphics Application 331 to creat
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Listing 4-13 The graphics demo's bu
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A Graphics Application 339 a good i
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Constants public static final int D
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colorLabel.setIcon(colorButtons[0]
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A Graphics Application 345 Chapter
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Listing 4-14 The graphics demo's cu
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A Graphics Application 349 groove c
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A Graphics Application 351 resultin
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A Graphics Application 353 JPanel,
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Painting the Canvas and Drawing in
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A Graphics Application 357 same ope
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Listing 4-16 A basic class for draw
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A Graphics Application 361 Graphics
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g. setPaintMode() ; } else { g.setX
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A Graphics Application 365 As you c
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} } // Inform listeners int count =
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} DrawnShape d = (DrawnShape)drawin
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A Graphics Application 371 This int
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Listing 4-17 An icon that displays
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A Graphics Application 375 Listing
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A Graphics Application 377 much lar
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int height = fm.getHeight(); A Grap
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Table 4-4 FontMetrics Class Methods
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Listing 4-19 Drawing centered text
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A Graphics Application 385 the fram
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A Graphics Application 387 not alwa
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g.drawstring(text, xpos, ypos); Fig
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Listing 4-20 Printing Java componen
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Core Alert What you actually see wi
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A Graphics Application 395 pie code
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A Graphics Application 397 g.dispos
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g . d r a w R e c t ( 0 , 0, 300, 6
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Printing the Contents of the Graphi
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} A Graphics Application 403 Toolki
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Listing 4-22 Printing text (continu
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Listing 4-22 Printing text (continu
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A Graphics Application 409 should n
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A Graphics Application 411 by using
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A Graphics Application 413 The code
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A Graphics Application 415 offered
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A Graphics Application 417 happens
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A Graphics Application 419 • Cons
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A Graphics Application 421 PrintJob
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is equivalent to: setPrinterResolut
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Table 4-7 Inner Classes of JobAttri
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A Graphics Application 427 second d
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Figure 4-17 Two-sided long edge pri
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A Graphics Application 431 button w
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A Graphics Application 433 graphics
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Listing 4-23 Changing the print res
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Core Alert Image printing doesn't w
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A Graphics Application 439 Figure 4
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A Graphics Application 441 Print Jo
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A Graphics Application 443 null, so
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} getPrintJob(frame, "Java File Pri
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A Graphics Application 447 This cod
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Summary A Graphics Application 449
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Now that you've seen the basics of
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This chapter looks at several Swing
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Simple Focus Management Logical Scr
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Logical Scrolling and Forcing Visib
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Core Note Logical Scrolling and For
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Figure 5-2 Adding a help message us
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Listing 5-7 Receiving key events pa
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DEFAULT NAME SHORT_DESCRIPTION LONG
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Code not shown } // Code not shown
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Table 5-2 JScrollBar Attributes (co
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Scrolling with the Keyboard Logical
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Listing 5-25 A scrolling action (co
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This chapter looks at how to give t
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JMenuItem closeltem = new JMenuItem
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The Menu Bar and the Menu System 62
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Listing 6-1 A menu for a simple fil
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public JMenuItem add(Action a); pub
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fileMenu.setMnemonic('F' Core Note
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JMenuItem mi = new JMenuItem(); mi.
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Not used } public void menuCanceled
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Figure 6-12 Radio Button menu items
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Listing 6-5 Creating a popup menu (
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Figure 6-15 popup menus. The Menu B
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Creating the Menus and the Toolbar
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Icon g = b.getlconO ; colorLabel.se
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} The Menu Bar and the Menu System
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} } undoAction.setEnabled(state) ;
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Listing 6-1 I Creating a floating t
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Container Property Use The Menu Bar
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Listing 6-14 Using the setAction me
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USING STANDARD DIALOGS ' Topics in
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762 Chapter 7 Using Standard Dialog
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The last chapter reviewed the built
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Creating Custom Dialog Boxes 831
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Creating Custom Dialog Boxes 833 th
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Creating Custom Dialog Boxes 837 Li
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Creating Custom Dialog Boxes 839 (b
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} Creating Custom Dialog Boxes 841
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Creating Custom Dialog Boxes 843 ov
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Creating Custom Dialog Boxes 845 to
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Creating Custom Dialog Boxes 849 Th
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Figure 8-2 A dialog containing an i
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JOptionPane(Object message, int mes
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Creating Custom Dialog Boxes 855 at
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Creating Custom Dialog Boxes 857 Be
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Creating Custom Dialog Boxes 859 Yo
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Listing 8-3 An image map class (con
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Creating Custom Dialog Boxes 863 ot
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Listing 8-4 A file content previewe
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Handling Events from the JFileChoos
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Creating Custom Dialog Boxes 873 Ta
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Creating Custom Dialog Boxes 875 fi
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A Color Toolbox as a Nonmodal Dialo
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Tabbed Panes and Borders 887 genera
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Figure 8-5 The JTabbedPane control.
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Table 8-3 Adding Tabs to a JTabbedP
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Tabbed Panes and Borders 893 Table
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J Listing 8-7 Using JTabbedPane (co
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Tabbed Panes and Borders 897 the ta
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Tabbed Panes and Borders 899 constr
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Etched Border Tabbed Panes and Bord
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Tabbed Panes and Borders 903 that s
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} Tabbed Panes and Borders 905 Colo
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And the possible justification valu
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Swing Components Often Used in Dial
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Listing 8-8 A dialog with radio but
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Creating a JList Control JList has
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Core Note Swing Components Often Us
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Lead selection is 0 Anchor selectio
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Listing 8-12 A custom list cell ren
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Core Note Swing Components Often Us
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public void insertElementAt(Object
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Simple Text Controls 1057 returned
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Simple Text Controls 1059 multiple
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Simple Text Controls 1061 Notice th
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Simple Text Controls 1063 Table 9-1
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Simple Text Controls 1067 dered in
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The MutableAttributeSet Interface S
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public SimpleAttributeSet(); public
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Simple Text Controls 1073 You'll no
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AbstractDocument and PlainDocument
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Simple Text Controls 1077 Listing 9
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Java JFCBook.Chapter9.PlainTextMode
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Figure 9-10 The internal structure
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You got a bunch of guys about to tu
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Simple Text Controls 1087 implement
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Simple Text Controls 1089 when new
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Listing 9-7 Using the highlighter (
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Editor Actions and the Default Keym
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Simple Text Controls 1095 Keymap my
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A Keymap Example Simple Text Contro
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Listing 9-8 Manipulating keymaps (c
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Keystroke < Shift 39 > selection-fo
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Swing 1,1.1 and Java 2 version 1.2.
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Simple Text Controls 1109 the JText
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Simple Text Controls 1111 classes?
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Simple Text Controls 1113 PasswordV
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Simple Text Controls 1115 to see mo
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Listing 9-9 Two views of a JTextAre
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Simple Text Controls 1119 obscure t
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public int getLastDividerLocation()
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Listing 9-10 Monitoring movement of
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Simple Text Controls 1125 You can t
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Simple Text Controls 1127 The last
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Simple Text Controls 1129 public vo
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Simple Text Controls 1131 ters, it
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Simple Text Controls 1133 moved, th
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Simple Text Controls 1135 additiona
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Listing 9-11 JTextPane example (Par
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} public String tag; public String
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Listing 9-12 JTextPane example—cr
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Listing 9-13 JTextPane example—in
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Simple Text Controls 1147 applied.
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Simple Text Controls 1149 that the
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Simple Text Controls 1151 An abbrev
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Editor Kits and The JEditorPane Con
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Simple Text Controls 1155 component
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Listing 9-14 Addinbg an action to a
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Simple Text Controls 1159 the list
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Table 9-7 Actions Implemented by St
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Simple Text Controls 1163 use the f
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Load new page by URL p.setPage(new
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Simple Text Controls 1167 as part o
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Simple Text Controls 1169 However t
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Simple Text Controls 1171 The examp
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java JFCBook.Chapter9.StreamEditorP
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Listing 9-17 Using JEditorPane to e
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public EventType getEventType(); pu
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Simple Text Controls 1181 page swit
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Simple Text Controls I 183 Note, ho
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This chapter takes an in-depth look
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The Tree Control 1187 corresponds t
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The Tree Control 1189 mechanism use
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Figure 10-4 A Metal tree with line
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The Tree Control 1193 result of a s
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The Tree Control 1195 As you can se
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The Tree Control 1197 directly conn
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The Tree Control 1199 The first con
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} public static void main(String[]
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public Object getPathComponent(int
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The Tree Control 1205 start the pro
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The Tree Control 1207 can use the s
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Tree Expansion and Traversal The Tr
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The Tree Control 1211 that there is
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}); You can run the modified versio
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The Tree Control 1215 You'll notice
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} }); The Tree Control 1217 + evt.g
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The Tree Control 1219 Holding down
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Table 10-3 Methods Used to Manage t
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Table 10-3 Methods Used to Manage t
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Table 10-4 Methods Used with Tree S
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The Tree Control 1227 be the leadin
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The Tree Control 1229 Converting Be
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public Enumeration pathFromAncestor
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Root 0 0_0 0_0_0 0_0_l 0_l 111 The
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public void insertNodelnto(MutableT
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public void nodesChanged(TreeNode p
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The Tree Control 1239 the tree's ap
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C:\j ava\demo\BarChart C:\java\docs
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Listing 10-3 A custom control to di
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Listing 10-3 A custom control to di
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The Tree Control 1247 below that di
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The Tree Control 1249 the control d
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structure.This means that the tree
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The Tree Control 1253 is marked as
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The Tree Control 1255 Name was adde
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Custom Tree Rendering and Editing 1
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You can verify that this works by t
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Table 10-7 UIDefaults Properties fo
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Table 10-8 Tree Editing Methods Met
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Listing 10-7 A customized tree mode
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THE TABEE CONTROL • Tables and Ta
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1300 Chapter I I The Table Control
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1306 Chapter II The Table Control o
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1310 Chapter II The Table Control T
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1312 Chapter 11 The Table Control F
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1316 Chapter 11 The Table Control t
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1318 Chapter II The Table Control L
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1320 Chapter 11 The Table Control r
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1324 Chapter 11 The Table Control M
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1332 Chapter II The Table Control t
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1334 Chapter II The Table Control F
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1340 Chapter 11 The Table Control p
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1344 Chapter II The Table Control C
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1346 Chapter 11 The Table Control T
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1348 Chapter II The Table Control a
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1350 Chapter II The Table Control A
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1352 Chapter 11 The Table Control L
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1354 Chapter II The Table Control p
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1360 Chapter II The Table Control W
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1370 Chapter II The Table Control M
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1374 Chapter II The Table Control
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1378 Chapter II The Table Control 2
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1388 Chapter II The Table Control J
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1394 Chapter II The Table Control c
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1396 Chapter 11 The Table Control L
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1398 Chapter II The Table Control U
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1406 Chapter II The Table Control c
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1408 Chapter II The Table Control C
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1418 Chapter II The Table Control s
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1420 Chapter II The Table Control S
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1424 Chapter 11 The Table Control t
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1428 Chapter II The Table Control n
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MULTIPLE- DOCUMENT APPLICATIONS Top
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1438 Chapter 12 Multiple-Document A
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In the first chapter of this book,
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Table 13-1 The Basic Look-and-Feel
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The Look-and-Feel and the UIManager
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InsetsUIResource Each of these clas
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The Look-and-Feel and the UI Manage
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Changing Component Look-and-Feel 15
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Listing 13-5 The Core JFC look-and-
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} if (needBorder != borderShown) {
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} Changing Component Look-and-Feel
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J Changing Component Look-and-Feel
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Listing 13-9 Building a menu that a
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Listing 13-10 Adding look-and-feel
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Listing 13-10 Adding look-and-feel
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Listing 13-13 The CFJCLookAndFeel c
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Listing 13-14 The Core JFCTreeUI cl
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Summary 1605 Swing components are a
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1608 Appendix A Swing and Applets t
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1610 Appendix A Swing and Applets <
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1612 Appendix A Swing and Applets F
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1614 Appendix A Swing and Applets T
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1616 Appendix A Swing and Applets 3
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1618 Appendix A Swing and Applets A
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1620 Appendix A Swing and Applets T
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1622 Appendix A Swing and Applets A
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1624 Appendix A Swing and Applets Y
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1626 Appendix A Swing and Applets O
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1628 Appendix A Swing and Applets h
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1630 Appendix A Swing and Applets t
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1632 Appendix A Swing and Applets C
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1634 Index Active Value interface 1
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1636 Index Content pane 102 Context
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1638 Index FlowLayout manager 166 a
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1640 Index getTitle method 1457 get
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1642 Index ment properties 137 marg
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1644 Index confirm dialogs 768 crea
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1646 Index and data model 1340 row
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1648 Index KeyMapWrapper 1110 keyPr
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1650 Index paintBorder method 319,
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1652 Index setDividerSize method 11
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1654 Index and multi-threading 157
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