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In windows, when I open a web page containing applet, icon of java plugin console is displayed in systray. But in Ubuntu, I don't find any way to show java plugin console. How can I open java plugin console with FireFox and Chromium in Ubuntu?

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2 Answers 2

up vote 7 down vote accepted

It's because the Java Console is hidden by default.

To change this:

  1. First start the Java Control Panel.

    From the command line run: ControlPanel (if not in PATH, you may have to run something like /usr/lib/jvm/jre1.7.0_51/bin/ControlPanel )

    Or, choose from the Dash like the screenshot below

    Java Control Panel

  2. In the Java Control Panel go to the Advanced Tab, expand Java Console and choose Show Console. Screenshot below:

    Set the Java Console On

  3. Now the console will pop up whenever you execute ANY Java Applet.

Fix INFO from this bug.

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1  
I follow your instruction but java plugin console is still not displayed. I use Ubuntu 10.04.3 LTS. –  Tran Dinh Thoai Oct 13 '11 at 23:41
    
Run firefox on the console and try to load an applet. Past the log so we can see whats happening :) –  Marcos Roriz Junior Oct 15 '11 at 18:22
    
How to pass the log? Using jconsole, I know that applet is loaded by icedtea plugin and runned on OpenJDK JRE. –  Tran Dinh Thoai Oct 15 '11 at 21:47
    
@TranDinhThoai, please switch to sunjdk and try :3. Redirect the browser output to a log file, firefox > log –  Marcos Roriz Junior Oct 22 '11 at 4:09

If you don't have the dash interface (for example if you use Kubuntu, Lubuntu, etc), an alternative method is:

1) Open Terminal and type:

update-alternatives --display java

2) Change Directory to the last directory shown, for example:

cd /usr/lib/jvm/java-7-oracle/jre/bin/

3) Type:

./ControlPanel
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