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

public class Rasterlayout
{
    public ScrollPane scrollpane;

    public Rasterlayout()
    {
        Frame fenster = new Frame("Rasterlayout");
        fenster.setBounds(100,200,500,400);
        fenster.addWindowListener(new FensterSchliesser(fenster));
        scrollpane = new ScrollPane(ScrollPane.SCROLLBARS_AS_NEEDED);
        scrollpane.setBackground(Color.WHITE);

        TextArea textfeld = new TextArea("huhu",80,100);
        textfeld.setEditable(true);
        scrollpane.add(textfeld);

        fenster.add(scrollpane);
        fenster.setVisible(true);
    }

    public static void main(String[] args)
    {
          Rasterlayout rasterlayout = new Rasterlayout();
    }


    private class FensterSchliesser implements WindowListener
    {
        private Frame fenster;

        public FensterSchliesser(Frame fenster)
        {
            this.fenster = fenster;
        }

        public void windowActivated(WindowEvent e) {}
        public void windowClosed(WindowEvent e) {}
        public void windowClosing(WindowEvent e) 
        {
            fenster.dispose();
            System.exit(0);
        }
        public void windowDeactivated(WindowEvent e) {}
        public void windowDeiconified(WindowEvent e) {}
        public void windowIconified(WindowEvent e) {}
        public void windowOpened(WindowEvent e) {}
       
    }

}

Code 0-1: Quellcode der Klasse Rasterlayout.