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How to copy selected text from one text area to another |
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The Java Swing tip illustrates a method of copying selected text from one text
area to another. A quick review of how it works is, selected and copied text
is saved on the "clipboard" in your computer and then pasted (transfered) to
a text editor. The copied text will remain on the clipboard until you copy
something else or clear the clipboard.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class TextAreaDemo extends JFrame {
private JTextArea t1, t2;
private JButton copy;
public TextAreaDemo()
{
super( "TextArea Demo" );
Box b = Box.createHorizontalBox();
String s = "This is a demo string to\n" +
"illustrate copying text\n" +
"from one TextArea to \n" +
"another TextArea using an\n"+
"external event\n";
t1 = new JTextArea( s, 10, 15 );
b.add( new JScrollPane( t1 ) );
copy = new JButton( "Copy >>>" );
copy.addActionListener(
new ActionListener() {
public void actionPerformed( ActionEvent e )
{
t2.setText( t1.getSelectedText() );
}
}
);
b.add( copy );
t2 = new JTextArea( 10, 15 );
t2.setEditable( false );
b.add( new JScrollPane( t2 ) );
Container c = getContentPane();
c.add( b ); // Box placed in BorderLayout.CENTER
setSize( 425, 200 );
show();
}
public static void main( String args[] )
{
TextAreaDemo app = new TextAreaDemo();
app.addWindowListener(
new WindowAdapter() {
public void windowClosing( WindowEvent e )
{
System.exit( 0 );
}
}
);
}
}
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