OPERATING SYSTEM(S):
--------------------
Linux AMD64

FULL JDK VERSION(S):
-------------------
java version "1.6.0_02"
Java(TM) SE Runtime Environment (build 1.6.0_02-b05)
Java HotSpot(TM) 64-Bit Server VM (build 1.6.0_02-b05, mixed mode)


DESCRIPTION:
------------
PROBLEM DESCRIPTION:
When PopupMenu has more menuitems than the screen can display, the popup menu is not fully displayed on the screen, rather the menu goes down starting from System Tray Area. Hence only 3 menu items are visible to the user and when we try to reach the other menu items below, the focus is lost since it passes below the screen viewing area.

In Linux, though the PopupMenu is displayed on the screen the scroll button is not displayed. Hence the user cannot view the other
menuItems.

STEPS TO REPRODUCE
--------------------
1) java -cp . Sample on gnome-session
2) you will not see a scroll bar at the end of popupmenu to make the rest of the menu items visible.

TESTCASE DESCRIPTION
---------------------

import java.awt.FlowLayout;
import java.awt.MenuItem;
import java.awt.PopupMenu;
import java.awt.SystemTray;
import java.awt.TrayIcon;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;

public class Sample {

/**
* @param args
*/
Sample() throws Exception{
JFrame f = new JFrame("System Tray Test");
JButton b = new JButton("Remove System Tray Icons");
f.add(b);
final SystemTray st = SystemTray.getSystemTray();
PopupMenu pm = new PopupMenu();
for(int i=1;i<100;i++){
pm.add(new MenuItem("Menu Item " + i));
}
TrayIcon tI = new TrayIcon(java.awt.Toolkit.getDefaultToolkit()
.getImage("flower.jpg"), "System Tray Icon", pm);
tI.setImageAutoSize(true);
st.add(tI);
b.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
TrayIcon [] ti= st.getTrayIcons();
for(int i=0;i<ti.length;i++){
st.remove(ti[i]);
}
}
});
f.setLayout(new FlowLayout());
f.setVisible(true);
f.setSize(300, 400);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

public static void main(String[] args)throws Exception {
new Sample();
}

}