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bronbrew

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Problem with applets and Java Plug-in 1.6.0_13


I recently upraded to the latest JRE but now I get this error when I click on button that runs an applet. Why would I have this problem after the upgrade. Other users with older JRE versions are not having this problem?


Java Plug-in 1.6.0_13
Using JRE version 1.6.0_13 Java HotSpot(TM) Client VM
User home directory = C:\Documents and Settings\me

----------------------------------------------------
c:   clear console window
f:   finalize objects on finalization queue
g:   garbage collect
h:   display this help message
l:   dump classloader list
m:   print memory usage
o:   trigger logging
q:   hide console
r:   reload policy configuration
s:   dump system and deployment properties
t:   dump thread list
v:   dump thread stack
x:   clear classloader cache
0-5: set trace level to <n>
----------------------------------------------------

load: class javachart.applet.dateLineApp.class not found.
java.lang.ClassNotFoundException: javachart.applet.dateLineApp.class
      at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
      at java.lang.ClassLoader.loadClass(Unknown Source)
      at java.lang.ClassLoader.loadClass(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
      at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
      at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
      at java.lang.Thread.run(Unknown Source)
Caused by: javax.net.ssl.SSLException: Received fatal alert: unexpected_message
      at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
      at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
      at com.sun.net.ssl.internal.ssl.SSLSocketImpl.recvAlert(Unknown Source)
      at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source)
      at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
      at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
      at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
      at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
      at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
      at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
      at java.net.HttpURLConnection.getResponseCode(Unknown Source)
      at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
      at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
      at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
      at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
      at java.security.AccessController.doPrivileged(Native Method)
      ... 7 more
Exception: java.lang.ClassNotFoundException: javachart.applet.dateLineApp.class
load: class javachart.applet.dateLineApp.class not found.
java.lang.ClassNotFoundException: javachart.applet.dateLineApp.class
      at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
      at java.lang.ClassLoader.loadClass(Unknown Source)
      at java.lang.ClassLoader.loadClass(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
      at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
      at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
      at java.lang.Thread.run(Unknown Source)
Caused by: javax.net.ssl.SSLException: Received fatal alert: unexpected_message
      at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
      at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
      at com.sun.net.ssl.internal.ssl.SSLSocketImpl.recvAlert(Unknown Source)
      at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source)
      at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
      at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
      at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
      at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
      at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
      at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
      at java.net.HttpURLConnection.getResponseCode(Unknown Source)
      at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
      at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
      at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
      at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
      at java.security.AccessController.doPrivileged(Native Method)
      ... 7 more
Exception: java.lang.ClassNotFoundException: javachart.applet.dateLineApp.class


Avatar of Thomas4019
Thomas4019
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Maybe you need to reinstall a "javachart" java extension.
Avatar of CEHJ
CEHJ
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>>x:   clear classloader cache

First of all, try that and then reload the applet
Avatar of bronbrew
bronbrew

ASKER

The applet class is on a server. Other user with older versions of the JRE are not having problems. Could it be a security issue with the newer JRE. In the error msg above it says:

Caused by: javax.net.ssl.SSLException: Received fatal alert: unexpected_message

Is there an ssl problem? Could it have something to do with the advanced security settings in the Java Control Panel?
Avatar of CEHJ
CEHJ
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What happened when you tried my suggestion?
Avatar of bronbrew
bronbrew

ASKER

I opened the java console and deleted temperary files. Is that different the class loader cache?
Avatar of CEHJ
CEHJ
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Well i don't really get you there as there's no option to delete temporary files at the plugin console. Option x on the keyboard clears the cache. Yes, they *could* be different
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bronbrew

ASKER

I used option x to clear the cache and it still does not work.
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CEHJ
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OK. Please turn up the trace to 5 and then post the result here after reloading
Avatar of bronbrew
bronbrew

ASKER

It works on our dev server but not prod. On dev I get an SSL certificate warning, but on prod I do not get the warning.

I turned the trace up to five and I changed the url to have [OurServer] instead of the actual address.

User home directory = C:\Documents and Settings\nhessefort
----------------------------------------------------
c:   clear console window
f:   finalize objects on finalization queue
g:   garbage collect
h:   display this help message
l:   dump classloader list
m:   print memory usage
o:   trigger logging
q:   hide console
r:   reload policy configuration
s:   dump system and deployment properties
t:   dump thread list
v:   dump thread stack
x:   clear classloader cache
0-5: set trace level to <n>
----------------------------------------------------
basic: Added progress listener: sun.plugin.util.GrayBoxPainter$GrayBoxProgressListener@bad8a8
network: Cache entry not found [url: https://[OurServer]/javachart/applet/dateLineApp.class, version: null]
network: Connecting https://[OurServer/javachart/applet/dateLineApp.class with proxy=DIRECT
network: Connecting http://[OurServer:443/ with proxy=DIRECT
network: Cache entry not found [url: https://www.[OurServer/javachart/applet/dateLineApp/class.class, version: null]
network: Connecting https://[OurServer/javachart/applet/dateLineApp/class.class with proxy=DIRECT
network: Connecting http://[OurServer:443/ with proxy=DIRECT
basic: load: class javachart.applet.dateLineApp.class not found.
load: class javachart.applet.dateLineApp.class not found.
java.lang.ClassNotFoundException: javachart.applet.dateLineApp.class
      at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
      at java.lang.ClassLoader.loadClass(Unknown Source)
      at java.lang.ClassLoader.loadClass(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
      at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
      at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
      at java.lang.Thread.run(Unknown Source)
Caused by: javax.net.ssl.SSLException: Received fatal alert: unexpected_message
      at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
      at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
      at com.sun.net.ssl.internal.ssl.SSLSocketImpl.recvAlert(Unknown Source)
      at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source)
      at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
      at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
      at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Source)
      at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
      at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
      at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
      at java.net.HttpURLConnection.getResponseCode(Unknown Source)
      at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
      at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
      at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
      at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
      at java.security.AccessController.doPrivileged(Native Method)
      ... 7 more
Exception: java.lang.ClassNotFoundException: javachart.applet.dateLineApp.class
Avatar of bronbrew
bronbrew

ASKER

Here is all I see in the log when it works on dev:

Java Plug-in 1.6.0_13
Using JRE version 1.6.0_13 Java HotSpot(TM) Client VM
User home directory = C:\Documents and Settings\nhessefort

----------------------------------------------------
c:   clear console window
f:   finalize objects on finalization queue
g:   garbage collect
h:   display this help message
l:   dump classloader list
m:   print memory usage
o:   trigger logging
q:   hide console
r:   reload policy configuration
s:   dump system and deployment properties
t:   dump thread list
v:   dump thread stack
x:   clear classloader cache
0-5: set trace level to <n>
----------------------------------------------------

Loaded image: https://OurDev/java/javachart/html/images/ball_red.gif
Avatar of CEHJ
CEHJ
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>>. On dev I get an SSL certificate warning,

What is that warning - can you post it? You probably might need to import the cert into your new JRE
Avatar of bronbrew
bronbrew

ASKER

See attached image. On the security settings of the advanced tab of the java console wet checked:
Use SSL 2.0 compatible client hello format
Use SSL 3.0
Use TLS 1.0

Then the applet works.
JavaControlPanel.jpg
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CEHJ
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SOLUTION
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Mick Barry
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Avatar of bronbrew
bronbrew

ASKER

One of our own admin actually helped with the settings in the Java console, but I appreciate the help anyway.