This phenemenon has been seeing with fcs_O - fcs_W.
No exception occured in file saving with appletviewer for the first time
and ser file is saved correctly.
However,java.lang.NullPointerException occured in file saving for the
second time by the same oeration as for the first time.

Confirmed OS is Solaris2.6,7,8 (ja,C locale) / Windows95,98,NT4.0,2000(Japanese).

Please compile and run the attached files.

This proglam (JAppletTest.java) use api is listed below.
javax.swing.JApplet;
javax.swing.JPanel;
javax.swing.JLabel;
javax.swing.JTextField;
javax.swing.JButton;
javax.swing.JMenuBar;
javax.swing.JMenu;
javax.swing.JMenuItem;
java.awt.*;

There were nothing the same phenomenon in $JAVA_HOME/demo/applets.

---Part of exception---

Exception occurred during event dispatching:
java.lang.NullPointerException
        at javax.swing.plaf.basic.BasicMenuBarUI.uninstallListeners(BasicMenuBarUI.java:145)
        at javax.swing.plaf.basic.BasicMenuBarUI.uninstallUI(BasicMenuBarUI.java:132)
        at javax.swing.JComponent.compWriteObjectNotify(JComponent.java:4530)
        at javax.swing.JComponent$EnableSerializationFocusListener.writeObject(JComponent.java:4520)
        at java.lang.reflect.Method.invoke(Native Method)
-----------------------
slightly diffefent, but reproducible with kestrel-linux-rc1-b10

An exception was thrown on saving a file for the first time as well as for the second time:

¥¢¥×¥ì¥Ã¥ÈÊݸ: java.io.NotSerializableException: java.lang.Thread
java.lang.NullPointerException
        at javax.swing.plaf.basic.BasicGraphicsUtils.isLeftToRight(BasicGraphicsUtils.java:300)
        at javax.swing.plaf.basic.BasicMenuItemUI.layoutMenuItem(BasicMenuItemUI.java:753)
        at javax.swing.plaf.basic.BasicMenuItemUI.getPreferredMenuItemSize(BasicMenuItemUI.java:368)
        at javax.swing.plaf.basic.BasicMenuItemUI.getPreferredSize(BasicMenuItemUI.java:305)
        at javax.swing.JComponent.getPreferredSize(JComponent.java:1042)
        at javax.swing.BoxLayout.checkRequests(BoxLayout.java:361)
        at javax.swing.BoxLayout.preferredLayoutSize(BoxLayout.java:194)
        at java.awt.Container.preferredSize(Container.java:833)
        at java.awt.Container.getPreferredSize(Container.java:817)
        at javax.swing.JComponent.getPreferredSize(JComponent.java:1044)
        at javax.swing.JRootPane$RootLayout.layoutContainer(JRootPane.java:694)
        at java.awt.Container.layout(Container.java:686)
        at java.awt.Container.doLayout(Container.java:676)
        at java.awt.Container.validateTree(Container.java:750)
        at java.awt.Container.validateTree(Container.java:757)
        at java.awt.Container.validateTree(Container.java:757)
        at java.awt.Container.validate(Container.java:728)
        at sun.applet.AppletPanel.run(AppletPanel.java:359)
        at java.lang.Thread.run(Thread.java:484)
Warning:
    Name: menu_bar
    Class: XmRowColumn
    XtGrabKeyboard failed.

¥¢¥×¥ì¥Ã¥ÈÊݸ: java.io.NotSerializableException: java.lang.Thread

keiko.nakayama@Eng 2000-07-20