Re: JRE and Browser Plugin Problems

Roland wrote:

Which OS are you using? [I'm assuming it's Windows, since you posted your message using Windows version of Thunderbird.]

Type "about:plugins" without quotes in the Firefox addressbar and see if Java is listed. Several Java plugin DLLs are typically listed, e.g.
*Java(TM) 2 Platform Standard Edition 5.0 Update 4*

    File name: C:\PROGRA~1\mozilla\FIREFO~1.0\plugins\NPOJI610.dll
    Java Plug-in 1.5.0_04 for Netscape Navigator (DLL Helper)

    MIME Type              Description   Suffixes   Enabled
    application/x-java-vm  Java                    Yes

[If you don't see the full path of the filename, type "about:config" in the addressbar (without quotes), locate the preference "plugin.expose_full_path" (no quotes) and set its value to true (double-click to toggle its value).]

On my system (W2K / Java 1.5.0_04) the following DLLs are listed
NPOJI610.dll
NPJPI150_04.dll
NPJava11.dll
NPJava12.dll
NPJava13.dll
NPJava14.dll
NPJava32.dll

Since you don't have Java plugins in the Firefox plugins directory, you may find that in your case the full path of the DLLs refer to the JRE directory (e.g. C:\Program Files\Java\jre1.5.0_04\bin\NPJPI160.dll).


Got it. Once I expanded the full path, it shows the path to the Java directory, not the Firefox plugin directory.


Further things you should check
1) Are you using a firewall or an Internet Protection Suite that might be blocking Java applets / class files. [I'm assuming that you can view www.java.com without a problem in Firefox, so the firewall is not blocking the browser to open a HTTP connection.]

I'm running Kerio 4.1, Norton 2005, and a Netgear router. I've tried running applets with both Kerio and Norton disabled - no joy. I haven't tried taking the router out of the loop. Mostly because things have worked with router before. The only changes I've made to the default config is to port forward port 113 ident for IRC and some ports for DCC.

2) Can you copy the link http://www.java.com/jsp_utils/JavaCallJS.class to the Firefox address bar and open it? If you are prompted to save the class file, that's OK: it means that the browser can open it (but the Java plugin cannot). If Firefox cannot access it either, then a firewall or something else is blocking it. [FWIW, I can access the link, so the class file does exist.]

I'm prompted to save or select an application to open the file with. So the file exists, and I can see it (at least using http through port 80).

One thing that doesn't work though is this line:
"network: Connecting http://www.java.com/jsp_utils/JavaCallJS/class.class with proxy=DIRECT"

Which follows JavaCallJS.class line in the console. I get a "File Not Found" from the Java web site. Significant?


3) Are you using a proxy to access the internet? If you are (if you have selected a proxy in Tools -> Options -> General -> Connection Settings), then make sure that the Java plugin uses the same: [assuming Windows & Java 1.5] Start -> Settings -> Control Panel -> Java -> General -> Network settings -> Use browser settings. 

No proxy, just a Netgear router with NAT.

I'm completely void of any ideas at this point.

Thx
-K2
.

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