/* * Swing version */import javax.swing.*;import java.awt.Color;import java.awt.Dimension;import java.awt.Insets;import java.awt.GridBagLayout;import java.awt.GridBagConstraints;import java.awt.event.MouseMotionListener;import java.awt.event.MouseEvent;public class MouseMotionEventDemo extends JApplet                                   implements MouseMotionListener {    BlankArea blankArea;    JTextArea textArea;    static final String newline = "\n";    public void init() {        JPanel contentPane = new JPanel();        GridBagLayout gridbag = new GridBagLayout();        GridBagConstraints c = new GridBagConstraints();        contentPane.setLayout(gridbag);        c.fill = GridBagConstraints.BOTH;        c.gridwidth = GridBagConstraints.REMAINDER;        c.weightx = 1.0;        c.weighty = 1.0;        c.insets = new Insets(1, 1, 1, 1);        blankArea = new BlankArea(new Color(0.98f, 0.97f, 0.85f));        gridbag.setConstraints(blankArea, c);        contentPane.add(blankArea);        c.insets = new Insets(0, 0, 0, 0);        textArea = new JTextArea();        textArea.setEditable(false);        JScrollPane scrollPane = new JScrollPane(textArea,                JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,                JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);        scrollPane.setPreferredSize(new Dimension(200, 75));        gridbag.setConstraints(scrollPane, c);        contentPane.add(scrollPane);        //Register for mouse events on blankArea and applet.        blankArea.addMouseMotionListener(this);        addMouseMotionListener(this);        setContentPane(contentPane);    }    public void mouseMoved(MouseEvent e) {       saySomething("Mouse moved", e);    }    public void mouseDragged(MouseEvent e) {       saySomething("Mouse dragged", e);    }    void saySomething(String eventDescription, MouseEvent e) {        textArea.append(eventDescription                         + " (" + e.getX() + "," + e.getY() + ")"                        + " detected on "                        + e.getComponent().getClass().getName()                        + newline);    }}