Tested with Merlin b38 on Solaris 2.6 Sparc/x86 and Windows.

In merlin b38, when using appletviewer to startup a application,
then choose print from Applet menu, there will be some error message like below.
--------------------------------------------------------------------------------------
Exception occurred during event dispatching:
java.lang.NullPointerException
        at javax.swing.plaf.metal.MetalLookAndFeel.getControlShadow(MetalLookAndFeel.java:1160)
        at javax.swing.plaf.metal.MetalBorders$MenuBarBorder.paintBorder(MetalBorders.java:254)
        at javax.swing.JComponent.paintBorder(JComponent.java:588)
        at javax.swing.JMenuBar.paintBorder(JMenuBar.java:315)
        at javax.swing.JComponent.printBorder(JComponent.java:815)
        at javax.swing.JComponent.paint(JComponent.java:694)
        at javax.swing.JComponent.print(JComponent.java:772)
        at javax.swing.JComponent.paintChildren(JComponent.java:540)
        at javax.swing.JComponent.printChildren(JComponent.java:802)
        at javax.swing.JComponent.paint(JComponent.java:701)
        at javax.swing.JLayeredPane.paint(JLayeredPane.java:548)
        at javax.swing.JComponent.print(JComponent.java:772)
        at javax.swing.JComponent.paintChildren(JComponent.java:540)
        at javax.swing.JComponent.printChildren(JComponent.java:802)
        at javax.swing.JComponent.paint(JComponent.java:701)
        at javax.swing.JComponent.print(JComponent.java:772)
        at java.awt.GraphicsCallback$PrintCallback.run(GraphicsCallback.java:35)
        at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:63)
        at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:100)
        at java.awt.Container.print(Container.java:1091)
        at sun.awt.motif.MComponentPeer.print(MComponentPeer.java:273)
        at sun.awt.motif.MPanelPeer.print(MPanelPeer.java:41)
        at java.awt.GraphicsCallback$PeerPrintCallback.run(GraphicsCallback.java:88)
        at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:63)
        at java.awt.Component.printAll(Component.java:2407)
        at sun.applet.AppletViewer.appletPrint(AppletViewer.java:688)
        at sun.applet.AppletViewer.processUserAction(AppletViewer.java:834)
        at sun.applet.AppletViewer$UserActionListener.actionPerformed(AppletViewer.java:131)
        at java.awt.MenuItem.processActionEvent(MenuItem.java:540)
        at java.awt.MenuItem.processEvent(MenuItem.java:504)
        at java.awt.MenuComponent.dispatchEventImpl(MenuComponent.java:276)
        at java.awt.MenuComponent.dispatchEvent(MenuComponent.java:266)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:425)
        at java.awt.EventDispatchThread.pumpOneEvent(EventDispatchThread.java:136)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:122)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:118)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:98)
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To reproduce,

1. compile attached JAppletTest.java with Merlin_b38.
2. execute 'appletviewer JAppletTest_eng.html'
3. select print from 'Applet' menu

or

1. execute Clock demo.
2. select print from 'Applet' menu

This problem is related with BugID 4371770.