Display certificate info cause exception on build 6

When loading signed application, JavaWS pops a window asking if user wants
to launch the application. If user click detail button to view the info,
an exception is thrown and the info message can not be displayed. However,
user can still click launch to run the application.

The following is a trace from one test case:
java.lang.NullPointerException
        at com.sun.javaws.security.CertificatePanel.showCertificateDialog(CertificatePanel.java:63)
        at com.sun.javaws.security.CertificateDialog.showDetails(CertificateDialog.java:134)
        at com.sun.javaws.security.CertificateDialog.access$0(CertificateDialog.java:125)
        at com.sun.javaws.security.CertificateDialog$1.actionPerformed(CertificateDialog.java:96)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1450)
        at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1504)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:378)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:250)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:216)
        at java.awt.Component.processMouseEvent(Component.java:3715)
        at java.awt.Component.processEvent(Component.java:3544)
        at java.awt.Container.processEvent(Container.java:1165)
        at java.awt.Component.dispatchEventImpl(Component.java:2593)
        at java.awt.Container.dispatchEventImpl(Container.java:1214)
        at java.awt.Component.dispatchEvent(Component.java:2497)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:2452)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:2217)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2126)
        at java.awt.Container.dispatchEventImpl(Container.java:1201)
        at java.awt.Window.dispatchEventImpl(Window.java:912)
        at java.awt.Component.dispatchEvent(Component.java:2497)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:333)
        at java.awt.EventDispatchThread.pumpOneEvent(EventDispatchThread.java:103)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:84)


To reproduce the bug, enable the console message first to see the exceptions.


yu.wang@eng 2000-09-21