import java.util.* ;
import java.io.* ;
import java.awt.* ;
import java.awt.event.* ;
import javax.swing.* ;
import javax.swing.event.* ;

class TerminationListener implements WindowListener {
    public void windowActivated(WindowEvent e) {}
    public void windowClosed(WindowEvent e) {}
    public void windowClosing(WindowEvent e) {
        System.exit(0) ;
    }
    public void windowDeactivated(WindowEvent e) {}
    public void windowDeiconified(WindowEvent e) {}
    public void windowIconified(WindowEvent e) {}
    public void windowOpened(WindowEvent e) {}
}

class TextAreaPanel extends JPanel implements DocumentListener {

    public TextAreaPanel() {

        edit = new JTextArea(8, 15) ;
        edit.getDocument().addDocumentListener(this) ;
        edit.setLineWrap(true) ;

        add(new JScrollPane(edit,
                 JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                 JScrollPane.HORIZONTAL_SCROLLBAR_NEVER)) ;
    }

    public void changedUpdate(DocumentEvent evt) {
    }

    public void insertUpdate(DocumentEvent evt) {
        updated = true ;
    }

    public void removeUpdate(DocumentEvent evt) {
        updated = true ;
    }

    private JTextArea edit ;

    private boolean updated = false ;
}

public class TextAreaTest {
    public static void main(String [] args) {

        JFrame frame = new JFrame() ;

        frame.setTitle("TextArea") ;
        frame.setSize(450, 300) ;

        frame.addWindowListener(new TerminationListener()) ;

        frame.getContentPane().add(new TextAreaPanel()) ;

        frame.setVisible(true) ;
    }
}