Problem Applet Error

**mohsendeveloper** · December 14th, 2011, 01:51 PM

I have the following error:

Microsoft JScript runtime error: Object doesn't support property or method 'evalID'

on the following line:

var result = LMSTestSCODriver.evalID( query1 + "!" + query2 );

LMSTestSCODriver is a Java Applet:

<object classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
width = "1"
height = "1"
name = "LMSTestSCODriver"
codebase="http://java.sun.com/products/plugin/1.4/jinstall-14-win32.cab#Version=1,4,0,0"
alt = "This object contains the LMSTestSCOApplet">
<param name = CODE value = "org.adl.testsuite.rte.lms.comm.LMSTestSCOApplet.c lass" />
<param name = CODEBASE value = "../common" />
<param name = ARCHIVE value = "LMSTest.jar" />
<param name = NAME value = "LMSTestSCODriver" />
<param name = "type" value = "application/x-java-applet;version=1.4" />
<comment>
<applet code = "org.adl.testsuite.rte.lms.comm.LMSTestSCOApplet.c lass"
archive = "LMSTest.jar"
name = "LMSTestSCODriver"
id = "NNLMSTestSCODriver"
width = "1"
height = "1"
mayscript = "true">
<param name = "codebase" value = "../common" />
</applet>
</comment>
</object>

Please help me.

**Norm** · December 14th, 2011, 04:32 PM

evalID

Is that method defined in the LMSTestSCODriver class?

How did you compile the code without having a definition for that class? Did you use a jar file that is not available to the java command when you execute the program?

Is this a javascript problem?
Wrong forum for javascript!!!

**mohsendeveloper** · December 15th, 2011, 12:15 PM

Yes. evalID is defined in the LMSTestSCODriver and I'm using jar file.

package org.adl.testsuite.rte.lms.comm;

import java.applet.Applet;
import java.util.Date;
import netscape.javascript.JSObject;
import org.adl.testsuite.rte.lms.interfaces.MessageManage r;
import org.adl.testsuite.rte.lms.util.*;

public class LMSTestSCOApplet extends Applet
{

public LMSTestSCOApplet()
{
mScoStatus = true;
}

public void destroy()
{
mConnection.sendObject(null);
mConnection.close();
}

public void init()
{
mConnection = new LMSSocketImpl(new MessageManager() {

public void registerSocketThread(Thread thread)
{
mSocket = (LMSSocketThread)thread;
}

public void sendMessage(LMSMessageObject lmsmessageobject)
{
mSocket.write(lmsmessageobject);
}

public void receiveMessage(LMSMessageObject lmsmessageobject)
{
LMSTestMessageManager.printDiagnostics(lmsmessageo bject, (new Date()).getTime());
mCurrentResponse = lmsmessageobject.getValue();
}

private LMSSocketThread mSocket;

}
);
mConnection.start();
}

public void start()
{
mJSO = JSObject.getWindow(this);
}

public void stop()
{
destroy();
}

private Object getResponse()
{
while(mCurrentResponse == null)
try
{
Thread.sleep(1L);
}
catch(InterruptedException interruptedexception) { }
Object obj = mCurrentResponse;
mCurrentResponse = null;
return obj;
}

public boolean evalID(String s)
{
if(mJSO == null)
mJSO = JSObject.getWindow(this);
mConnection.sendObject(new LMSMessageObject("evalID", s));
String s1 = (String)getResponse();
if(s1.equals(""))
{
String as[] = {
"You have launched the wrong LMS Test Content Package.\nPlease exit this package and refer to the instruction\npage for the correct LMS Test Content Package to launch."
};
mJSO.call("alert", as);
return false;
} else
{
return Boolean.valueOf(s1).booleanValue();
}
}

public String curUserInstructions()
{
mConnection.sendObject(new LMSMessageObject("userInstr"));
return (String)getResponse();
}

public String getUITestQuestions()
{
mConnection.sendObject(new LMSMessageObject("uiQ"));
return (String)getResponse();
}

public boolean evaluateUIResults(String s)
{
mConnection.sendObject(new LMSMessageObject("evalUIQ", s));
return Boolean.valueOf((String)getResponse()).booleanValu e();
}

public void writeToLog(String s, String s1, String s2)
{
String s3 = s + "~" + s1 + "~" + s2;
mConnection.sendObject(new LMSMessageObject("writeToLog", s3));
}

public void terminateTest()
{
mConnection.sendObject(new LMSMessageObject("terminateTest"));
}

public boolean runCommands()
{
Results results = getCommands().evaluate(JSObject.getWindow(this));
return evaluateResults(results);
}

public void setScoStatus(boolean flag)
{
mScoStatus = flag;
}

public boolean getScoStatus()
{
return mScoStatus;
}

public void completed()
{
mConnection.sendObject(new LMSMessageObject("completed"));
}

private Command getCommands()
{
mConnection.sendObject(new LMSMessageObject("command"));
return (Command)getResponse();
}

private boolean evaluateResults(Results results)
{
mConnection.sendObject(new LMSMessageObject(results));
return Boolean.valueOf((String)getResponse()).booleanValu e();
}

private static final long serialVersionUID = 2L;
private LMSSocketImpl mConnection;
protected Object mCurrentResponse;
private JSObject mJSO;
private boolean mScoStatus;
}

**Norm** · December 15th, 2011, 12:54 PM

The code you posted looks like javascript.
var result = LMSTestSCODriver.evalID( query1 + "!" + query2 );
Where is this line in the java code?

**mohsendeveloper** · December 15th, 2011, 01:07 PM

No No. The following line is a JavaScript code that is going to call the evalID which is a Java code in the Applet.

var result = LMSTestSCODriver.evalID( query1 + "!" + query2 );

**Norm** · December 15th, 2011, 01:10 PM

Can you make a SSCCE to demonstrate the problem. Something what we can copy, compile and test on our PCs.

**mohsendeveloper** · December 15th, 2011, 01:38 PM

I attached a file containing the mentioned Applet to this post. The attached file is a .zip file. You should unzip it first. There is a folder named 'resources' in the unzipped folder. And there is also a file named 'AssetLaunchTest.htm' in the 'resources' folder that contains the mentioned Applet. Obviously, if you launch the 'AssetLaunchTest.htm' file on browser then the Applet will be called by JavaScript code as I said before and then you will see the error. If you have any more questions please let me know.

Thank you very much for your help.

**Norm** · December 15th, 2011, 02:40 PM

Not the whole project.
I would like a small simple applet and with html to load it and some javascript that tries to connect to the applet. Very simple applet could use println to show that the connection was made and alert to show what was returned.

**mohsendeveloper** · December 15th, 2011, 05:54 PM

In fact, I'm a .Net developer and don't have enough information about Java Applet. I have to use this .zip file on my .Net web application. I don't have enough information to remove some parts of this Applet and make it simpler. I don't know what I should do Norm. If it's possible, please launch the mentioned .htm file on browser and let me know about the result.

**Norm** · December 15th, 2011, 07:42 PM

Sorry too much code to wade through.
Have you checked your javascript code to be sure that is coded correctly?
Where did you get the javascript code you are using?

**mohsendeveloper** · December 16th, 2011, 04:35 AM

This .zip file has been developed by Advanced Distributed Learning Initiative. I think it would be correct without any mistakes because I said this issue to other experts in our field and no one said about mistakes in this .zip file. For example, I asked this question at scorm - Microsoft JScript runtime error: Object doesn't support property or method 'evalID' - Stack Overflow. Please read the post and let me know.

Thank you again.

**Norm** · December 16th, 2011, 07:29 AM

Can you make a very simple program and html with javascript that shows the problem?

Have you tried other browsers?

The small test program will help locate your problem. If the small program works, then the problem could be in the large program.
If the small program does not work, it is a lot easier to track down a problem with a small program.

**mohsendeveloper** · December 17th, 2011, 01:37 AM

Unfortunately, I don't have enough science for making a Java Applet because I'm a .Net developer. I got this Java Applet from somewhere else and didn't developed it myself.

Yes. I launched it on other browsers but the problem is still there.

**Norm** · December 17th, 2011, 06:33 AM

Can you make a very simple program and html with javascript that shows the problem?
The small test program will help locate your problem. If the small program works, then the problem could be in the large program.
If the small program does not work, it is a lot easier to track down a problem with a small program.

**mohsendeveloper** · December 17th, 2011, 09:46 AM

Ok Norm. Thank you. I will let you know.

**mohsendeveloper** · January 10th, 2012, 01:30 PM

Norm, the following is the output of my Java Console. Can you say that what is the problem? (thanks in advance)

Detected from bootclasspath: C:\\PROGRA~1\\Java\\jre7\\lib\\deploy.jar
security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal .bind.,com.sun.imageio.
security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal .bind.,com.sun.imageio.,com.sun.javaws
security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal .bind.,com.sun.imageio.,com.sun.javaws
security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal .bind.,com.sun.imageio.,com.sun.javaws,com.sun.dep loy
security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal .bind.,com.sun.imageio.,com.sun.javaws,com.sun.dep loy
security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal .bind.,com.sun.imageio.,com.sun.javaws,com.sun.dep loy,com.sun.jnlp
security: property package.definition value null
security: property package.definition new value com.sun.javaws
security: property package.definition value com.sun.javaws
security: property package.definition new value com.sun.javaws,com.sun.deploy
security: property package.definition value com.sun.javaws,com.sun.deploy
security: property package.definition new value com.sun.javaws,com.sun.deploy,com.sun.jnlp
security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal .bind.,com.sun.imageio.,com.sun.javaws,com.sun.dep loy,com.sun.jnlp
security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal .bind.,com.sun.imageio.,com.sun.javaws,com.sun.dep loy,com.sun.jnlp,org.mozilla.jss
security: property package.definition value com.sun.javaws,com.sun.deploy,com.sun.jnlp
security: property package.definition new value com.sun.javaws,com.sun.deploy,com.sun.jnlp,org.moz illa.jss
basic: Added progress listener: sun.plugin.util.ProgressMonitorAdapter@1b684ca
basic: Plugin2ClassLoader.addURL parent called for http://localhost:2750/Courses/Conten...on/LMSTest.jar
Java Plug-in 10.1.0.8
Using JRE version 1.7.0_01-b08 Java HotSpot(TM) Client VM
User home directory = C:\Users\Mohsen
----------------------------------------------------
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>
----------------------------------------------------
network: Connecting http://localhost:2750/Courses/Conten...on/LMSTest.jar with proxy=DIRECT
network: Connecting http://localhost:2750/ with proxy=DIRECT
network: Downloading resource: http://localhost:2750/Courses/Conten...on/LMSTest.jar
Content-Length: 86,464
Content-Encoding: null
security: Blacklist revocation check is enabled
security: Loading Deployment certificates from C:\Users\Mohsen\AppData\LocalLow\Sun\Java\Deployme nt\security\trusted.certs
security: Loaded Deployment certificates from C:\Users\Mohsen\AppData\LocalLow\Sun\Java\Deployme nt\security\trusted.certs
security: Loading certificates from Deployment session certificate store
security: Loaded certificates from Deployment session certificate store
security: Loading certificates from Internet Explorer TrustedPublisher certificate store
security: Loaded certificates from Internet Explorer TrustedPublisher certificate store
security: Validate the certificate chain using CertPath API
security: Loading certificates from Internet Explorer ROOT certificate store
security: Loaded certificates from Internet Explorer ROOT certificate store
security: The certificate has been expired, need to check timestamping info
security: No timestamping info available
security: Found jurisdiction list file
security: No need to checking trusted extension for this certificate
security: The CRL support is disabled
security: The OCSP support is disabled
security: This OCSP End Entity validation is disabled
security: Checking if certificate is in Deployment denied certificate store
security: Checking if certificate is in Deployment permanent certificate store
security: Checking if certificate is in Deployment permanent certificate store
security: Validate the certificate chain using CertPath API
security: The certificate has been expired, need to check timestamping info
security: No timestamping info available
security: Found jurisdiction list file
security: No need to checking trusted extension for this certificate
security: The CRL support is disabled
security: The OCSP support is disabled
security: This OCSP End Entity validation is disabled
security: Checking if certificate is in Deployment denied certificate store
security: Checking if certificate is in Deployment permanent certificate store
security: Checking if certificate is in Deployment permanent certificate store
basic: Plugin2ClassLoader.getPermissions CeilingPolicy allPerms
security: Validate the certificate chain using CertPath API
security: The certificate has been expired, need to check timestamping info
security: No timestamping info available
security: Found jurisdiction list file
security: No need to checking trusted extension for this certificate
security: The CRL support is disabled
security: The OCSP support is disabled
security: This OCSP End Entity validation is disabled
security: Checking if certificate is in Deployment denied certificate store
security: Checking if certificate is in Deployment permanent certificate store
security: Checking if certificate is in Deployment permanent certificate store
basic: Applet loaded.
basic: Applet resized and added to parent container
basic: PERF: AppletExecutionRunnable - applet.init() BEGIN ; jvmLaunch dt 872136 us, pluginInit dt 11169479 us, TotalTime: 12041615 us
basic: Applet initialized
basic: Starting applet
basic: completed perf rollup
network: Connecting H-SPHERE with proxy=DIRECT
basic: Applet made visible
basic: Applet started
basic: Told clients applet is started
java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Un known Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress( Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at org.adl.testsuite.rte.lms.comm.LMSSocketImpl$Clien t.run(Unknown Source)
Exception in thread "Thread-14" java.lang.NullPointerException
at org.adl.testsuite.rte.lms.util.LMSSocketThread.lis ten(Unknown Source)
at org.adl.testsuite.rte.lms.comm.LMSSocketImpl$Clien t.run(Unknown Source)

**Norm** · January 10th, 2012, 01:37 PM

Part of the problem. This error:
java.net.ConnectException: Connection refused: connect
Looks like it was caused by the run() method trying to create a new Socket.
at java.net.Socket.<init>(Unknown Source)
at org.adl.testsuite.rte.lms.comm.LMSSocketImpl$Clien t.run(Unknown Source)

**mohsendeveloper** · January 19th, 2012, 02:00 PM

Norm,

The previous error was solved. The new Java Console error is the following:

Exception in thread "Thread-13" java.security.AccessControlException: access denied ("java.net.SocketPermission" "192.168.1.3:3956" "accept,resolve")

**Norm** · January 19th, 2012, 02:05 PM

Applets can not connect to sockets other than from where they are loaded from without permission.

**mohsendeveloper** · January 19th, 2012, 03:16 PM

How can I give my Applet enough permission to solve the problem?

**Norm** · January 19th, 2012, 03:19 PM

Two ways:
Put the class files in a jar and sign the jar
Add a Permission statement in the .java.policy file using the policytool program

Why is the applet trying to connect to a site?

**mohsendeveloper** · January 19th, 2012, 03:23 PM

My Applet is a Jar file. What do you mean by sign the jar, Norm?
Could you explain more, please?

Thank you

**Norm** · January 19th, 2012, 03:26 PM

See the tutorial or Google. Signing is a security thing.
Lesson: Java Applets (The Java™ Tutorials > Deployment)

**mohsendeveloper** · January 19th, 2012, 03:39 PM

Originally Posted by Norm

Two ways:
Add a Permission statement in the .java.policy file using the policytool program

What code do I put in java.policy?

**Norm** · January 19th, 2012, 04:00 PM

The filename begins with a .
Use the policytool program to edit the .java.policy file.
Here is a sample from my .java.policy file:

grant codeBase "http://127.0.0.1:8080/Testing/-" {
permission java.util.PropertyPermission "*", "read, write";
permission java.io.FilePermission "<<ALL FILES>>", "read";
};

located at:
C:\Documents and Settings\Norm\.java.policy

The following would open the gates for everthing:

grant{
permission java.security.AllPermission;
};

And another one used for testing:

grant {
permission java.net.SocketPermission "www.exdfrds.com", "connect, resolve";
};

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