How can I open Java's Control Panel?

Question

How can I open Java's Control Panel to change the security settings?

Dash -> search "java" -> open java control panel -> open tab "security". It's that easy. — Danatela, May 13 '14 at 05:43

score 18 · Accepted Answer · answered May 12 '14 at 14:07

18

If you've manually installed Oracle Java it doesn't show up in the Dash (as far as I know).

Open a terminal
Execute the following command:
```
/usr/bin/jdk1.8.0_05/bin/ControlPanel
```
Replace /usr/bin/jdk1.8.0_05 by the path of your Java installation.

answered May 12 '14 at 14:07

Louis Matthijssen

11,885
6
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50

score 17 · Answer 2 · edited Oct 02 '15 at 11:28

17

Open a terminal (Ctrl-Alt-T) and start

ControlPanel

Just a few moments later the Java Control Panel appeared. I haven't checked yet, but it may be necessary to

sudo ControlPanel

to save your changes.

edited Oct 02 '15 at 11:28

A.B.

90,397

answered May 07 '15 at 04:39

user215175

181

Pity the other answer was already accepted as this one is much more clean and succinct. – Blind Fish Nov 08 '15 at 18:34
Shouldn't sudo -H be used here? I've been told running a GUI application as root can cause trouble. – grooveplex May 30 '16 at 07:55

score 7 · Answer 3 · edited Apr 13 '17 at 12:24

7

Open a terminal
Execute the command: jcontrol

edited Apr 13 '17 at 12:24

Community

1

answered May 30 '16 at 07:23

user1554295

71

score 4 · Answer 4 · answered May 12 '14 at 13:55

4

Hit the super key, search for "java" and it will show, amongst others, "java plugin control panel" if it is installed that is.

enter image description here

answered May 12 '14 at 13:55

Rinzwind

299,756

2

Medium level is now removed. – jnajna Dec 14 '15 at 23:47

score 1 · Answer 5 · edited Aug 10 '16 at 21:57

1

Go to the Path you saved Java.

Type

cd jre/bin/
sh ControlPanel

edited Aug 10 '16 at 21:57

Kalle Richter

6,180
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answered Aug 10 '16 at 12:44

paddy

11

BISI · Answer 6 · 2017-10-24T00:28:09.560

as of java9... (Oct 2017)

This assumes you have installed java9 yourself (since the webupd8 PPA method is currently broken). After repeated purging of all things java-related (especially the default-installed java), I've not taken the time to fix the "update alternatives" infrastructure, so that particular link to jcontrol is borked (that is, the answer above -- "just type jcontrol in a terminal window" -- does not work).

This also assumes you have a working java installation (java -version returns something).

 # ls -al `which java`

You'll get something back like this:

  lrwxrwxrwx ... /usr/bin/java -> /usr/java/default/bin/java

So your command will be:

 # /usr/java/default/bin/jcontrol

Now, you can fix the alternatives link (the quick-and-dirty way), so you can just type jcontrol and have it work. I do recommend you use the update-alternatives structures (be sure you know what you are doing before taking these steps. I suggest using ls -al to check the links). This is done as root. You can put sudo in front of the commands if you feel better about doing that.

# ln -s -f /usr/java/default/bin/jcontrol /etc/alternatives/jcontrol
# ln -s -f /etc/alternatives/jcontrol /usr/bin/jcontrol

How can I open Java's Control Panel?

6 Answers6