Swing Interfaces with Sorting and Searching - Java Programming: Comprehensive Concepts and Techniques - page 459

Table 7-10 Document Class Methods

METHOD PURPOSE EXAMPLE

getText() Gets the text contained within the given portion String myLine =

of the document. myPane.getText(0, 80);

remove() Removes text in a certain area of the component.

doc.remove(0, 255));

The method takes two integer arguments that
relate to the beginning and end of the area to
remove.

getLength() Returns the length of the text in the component. int len = myDocument.getLength();

insertString() Appends text to an integer location in the text

insertString(doc.getLength(),

component.

title[j] + "\t",
textPane.getStyle("bold"));

Coding the addTextToTextPane() Method

Figure 7-24 displays the code for the addTextToTextPane() method. First,
line 163 creates a Document, named doc, which uses the previously declared
class level JTextPane. Then, the previous text is removed in line 167. The
insertString() method in line 170 appends the headings, TITLE, STUDIO,
and YEAR, using the large style created earlier.

160 //method to add new text to the JTextPane

161 public JTextPane addTextToTextPane ()

162 {

163 Document doc = textPane.getDocument () ;

164 try

165 {

166 //clear previous text

167 doc.remove ( 0, doc.getLength ()) ;

168
169 //insert title

170 doc.insertString ( 0, "TITLE\tSTUDIO\tYEAR\n" ,textPane.getStyle ( "large" )) ;

171
172 //insert detail

173 for ( int j = 0; j<title.length; j++ )

174 {

175 doc.insertString ( doc.getLength () , title [ j ] + "\t" ,

textPane.getStyle ( "bold" )) ;

176 doc.insertString ( doc.getLength () , studio [ j ] + "\t" , textPane.getStyle (

"italic" )) ;

177 doc.insertString ( doc.getLength () , year [ j ] + "\n" ,

textPane.getStyle ( "regular" )) ;

178 }

179 }

180 catch ( BadLocationException ble )

181 {

182 System .err.println ( "Couldn't insert text." ) ;

183 }

184
185 return textPane;

186 }

187

FIGURE 7-24