import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;

class DocumentSizeView extends JLabel implements DocumentListener {
	Document d;
	DocumentSizeView(Document d){
		super("");
		this.d = d;
		setText("Size: " + d.getLength() );
		d.addDocumentListener(this);
	}

	public void changedUpdate(DocumentEvent e) {}
	public void insertUpdate(DocumentEvent e) {
		setText("Size: " + d.getLength());
    }
	public void removeUpdate(DocumentEvent e){
		setText("Size: " + d.getLength());
	}
}