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<TITLE>Modifying Text in a JTextComponent (Java Developers Almanac Example)
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<h1>The Java Developers Almanac 1.4</h1>
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<A HREF="../javax.swing.text/pkg.html">javax.swing.text</A><font color="#666666" class="xsmall-font">
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<B><A HREF="../javax.swing.text/pkg.html#JTextComponent">JTextComponent</A></B><font color="#666666" class="xsmall-font">
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<h3>e970. Modifying Text in a JTextComponent</h3>
<pre> // Create the text component
JTextComponent textComp = new <font color="#0066ff"><i>JTextField("Initial Text")</i></font>;
Document doc = textComp.getDocument();
try {
// Insert some text at the beginning
int pos = <font color="#0066ff"><i>0</i></font>;
doc.insertString(pos, <font color="#0066ff"><i>"some text"</i></font>, null);
// Insert some text after the 5th character
pos = <font color="#0066ff"><i>5</i></font>;
doc.insertString(pos, <font color="#0066ff"><i>"some text"</i></font>, null);
// Append some text
doc.insertString(doc.getLength(), <font color="#0066ff"><i>"some text"</i></font>, null);
// Delete the first 5 characters
pos = <font color="#0066ff"><i>0</i></font>;
int len = <font color="#0066ff"><i>5</i></font>;
doc.remove(pos, len);
// Replace the first 3 characters with some text
pos = <font color="#0066ff"><i>0</i></font>;
len = <font color="#0066ff"><i>3</i></font>;
doc.remove(pos, len);
doc.insertString(pos, <font color="#0066ff"><i>"new text"</i></font>, null);
} catch (BadLocationException e) {
}
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<b>Related Examples</b></font></td>
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e968. <a class="eglink" href="GetText.html?l=rel">
Retrieving Text from a JTextComponent
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e969. <a class="eglink" href="PartialSeg.html?l=rel">
Retrieving All the Text from a JTextComponent Efficiently
</a>
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e971. <a class="eglink" href="ConcurReadText.html?l=rel">
Asynchronously Reading the Contents of a Visible JTextComponent
</a>
<br>
e972. <a class="eglink" href="FindWord.html?l=rel">
Finding Word Boundaries in a JTextComponent
</a>
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e973. <a class="eglink" href="GetWrappedLines.html?l=rel">
Retrieving the Visible Lines in a JTextComponent
</a>
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e974. <a class="eglink" href="Pos.html?l=rel">
Using a Position in a JTextComponent
</a>
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e975. <a class="eglink" href="LimitText.html?l=rel">
Limiting the Capacity of a JTextComponent
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e976. <a class="eglink" href="DragEnabledTextArea.html?l=rel">
Enabling Text-Dragging on a JTextComponent
</a>
<br>
e977. <a class="eglink" href="ShareDoc.html?l=rel">
Sharing a Document Between JTextComponents
</a>
<br>
e978. <a class="eglink" href="WalkViews.html?l=rel">
Enumerating All the Views in a JTextComponent
</a>
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See also:
<a class="eglink" href="/egs/javax.swing.text/pkg.html?l=rel#Actions%20and%20Key%20Bindings">
Actions and Key Bindings
</a>
<a class="eglink" href="/egs/javax.swing.text/pkg.html?l=rel#Caret%20and%20Selection">
Caret and Selection
</a>
<a class="eglink" href="/egs/javax.swing.text/pkg.html?l=rel#Events">
Events
</a>
<a class="eglink" href="/egs/javax.swing.text/pkg.html?l=rel#JEditorPane">
JEditorPane
</a>
<a class="eglink" href="/egs/javax.swing.text/pkg.html?l=rel#JFormattedTextField">
JFormattedTextField
</a>
<a class="eglink" href="/egs/javax.swing.text/pkg.html?l=rel#JTextArea">
JTextArea
</a>
<a class="eglink" href="/egs/javax.swing.text/pkg.html?l=rel#JTextField">
JTextField
</a>
<a class="eglink" href="/egs/javax.swing.text/pkg.html?l=rel#JTextPane">
JTextPane
</a>
<a class="eglink" href="/egs/javax.swing.text/pkg.html?l=rel#Styles">
Styles
</a>
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