T
taowang.gml
OS: Win XP PRO
Java: jdk/jre 1.6.0, JMF 2.1.1e
Web Browser: IE 6.0 and Firefox 1.5.0.9
source code: Java Media Framework (JMF) 2.1 - Sample Code.
http://java.sun.com/products/java-media/jmf/2.1.1/samples/samples/SimplePlayerApplet.java
html file (Note: you may change java_sound.wav to other audio/video
files):
<html>
<applet code=SimplePlayerApplet width=320 height=300>
<param name=file value="java_sound.wav">
</applet>
</html>
Problem description
This applet runs well in IE or Firefox. However, when I click the
Refresh button rapidly (as fast as I can), the Java Console
prints out the following message in most cases:
java.lang.NullPointerException
at sun.plugin.AppletViewer.loadJarFiles(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
at sun.plugin.AppletViewer.loadJarFiles(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at sun.plugin.viewer.WNetscapePluginObject$1.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown
Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown
Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
This problem is quite weird to me bacause SimplePlayerApplet.java is
Sample Code of JMF.
Any ideas about how to fix that?
Thanks in advance!
Tao Wang
Java: jdk/jre 1.6.0, JMF 2.1.1e
Web Browser: IE 6.0 and Firefox 1.5.0.9
source code: Java Media Framework (JMF) 2.1 - Sample Code.
http://java.sun.com/products/java-media/jmf/2.1.1/samples/samples/SimplePlayerApplet.java
html file (Note: you may change java_sound.wav to other audio/video
files):
<html>
<applet code=SimplePlayerApplet width=320 height=300>
<param name=file value="java_sound.wav">
</applet>
</html>
Problem description
This applet runs well in IE or Firefox. However, when I click the
Refresh button rapidly (as fast as I can), the Java Console
prints out the following message in most cases:
java.lang.NullPointerException
at sun.plugin.AppletViewer.loadJarFiles(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
java.lang.NullPointerException
at sun.plugin.AppletViewer.loadJarFiles(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at sun.plugin.viewer.WNetscapePluginObject$1.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown
Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown
Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
This problem is quite weird to me bacause SimplePlayerApplet.java is
Sample Code of JMF.
Any ideas about how to fix that?
Thanks in advance!
Tao Wang