LinuxQuestions.org - Java Runtime Environment/BGPlay

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Java Runtime Environment/BGPlay

Hi -

I'm trying to download Java Runtime Environment onto Linux in order to run an application called BGPlay (http://www.ris.ripe.net/bgplay/). Every time I try, and it seems as though everything is downloaded, I cannot find it on my computer anywhere and thus the application will not run. Any suggestions would be greatly appreciated.

Strange... I have the 1.5.0_09 JRE installed on my FC6 and FC10 setups both at home and at work.

All I did was to get the

Code:

jre-1_5_0_09-linux-i586.bin

file from the Sun website. Then, I became root and ran it like this

Code:

# jre-1_5_0_09-linux-i586.bin [enter]

This installed it in

Code:

drwxr-xr-x  7 root  root      4096 Oct 12  2006 jre1.5.0_09

[rylan@development ~]$ pwd

/home/rylan

[rylan@development ~]$

i. e. in my home directory, it created a jre1.5.0_09 folder.

All I then did was to add this to my path variable in BASH, in my .bashrc:

Code:

PATH=$PATH:$HOME/jre1.5.0_09

Then, i was able to run any .jar from the commandline in BASH with

Code:

# java -jar jarname.jar

Hope this helped...

I download jre1.6.0.13 and I have it installed and in a subdirectory on my desktop. However, everytime I try to run BGPlay (or anything else envolving Java), it says that I do not have the required plugins. I click on the link and install and then a window pops up saying java runtime environment is not available and to click here to download it. Even without that last part, any idea?

Welcome to LQ.

Try with this command : echo $PATH

and probably discover, that java is not in your path.

Which 'Linux' are you using ? ? Name and version, please.

"All" Linux's have a default Sun-java or similar, ready
to be installed with the package manager, a java which
just will work after install.
Please only download things not found in the package
collection for that OS.
.....

See above - the problem you seem to have is that when you try to run a .jar, your system cannot "find" your installed JRE.

As Kundfl suggests, make sure that the path on your desktop where the Java runtime is located, is included in your system-wide $PATH.

Also, I'd suggest rather running the application from a terminal, than trying to run it directly from the desktop with a click on an icon.

This is possible, of course, but then you'd probably have to point the icon to a shell script that first sets up the path to the JRE, and then attempts to run the specified .jar.

Thanks for the responses! I'm running Linux on Ubuntu 7.04. I had a feeling it was probably something close to that but I don't know how to fix that. I've never worked with moving things from one directory to another that I've downloaded/installed. I can't imagine its too difficult, I'm just not sure how. Knudfl, I tried to get java using apt-get but couldn't find it, that's why I went to the Sun website to download it.

When I run the command 'echo $PATH', I get: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games

Of course, you can also try to run the .jar without changing your path.

Just specify the path in the command, e. g. if you JRE is in /home/myuser/jre1.5.0_09, and your .jar you want to run is in /home/myuser/somejavaprogram, do this in your terminal emulator:

Code:

$ cd somejavaprogram

$ /home/myuser/jre1.5.0_09/bin/java ./somejavaprogram_s_jar.jar

This way, you avoid that the $path environment variable needs to be used, since you use a fully specified location for the "java" executable.

I don't have the .jar file, only an executable and .bin. I would like to know more on how to use PATH if you know how to do that : )

Well to setup your $PATH in your terminal emulator, try this.

First, open your terminal emulator (xterm or konsole).

I'm assuming you are using BASH in the emulator.

Open the file ~/.bashrc in a text editor. If you assume that your path is /home/rylan/mypath which you want included in the $PATH for your session, add the following line at the BOTTOM of the .bashrc file:

Code:

PATH=$PATH:/home/rylan/mthpath

Then save and close the .bashrc file.

Close your terminal emulator and re-open it.

The path /home/rylan/mypath should now be in your $PATH. I. e. you should be able to be in any directory, and typing a command and pressing enter will cause the $PATH to be searched for the executable / command specified, and this will now include /home/rylan/mypath... i. e. the system will be able to "find" any executable you call from anywhere, that is in /home/rylan/mypath, AND any other directories along with it in your $PATH.

You can see what $PATH you currently have set in your terminal emulator by typing

Code:

$ set | grep PATH

Here's my $PATH, for example:

Code:

[rylan@development ~]$ set | grep PATH

PATH=/usr/lib/qt-3.3/bin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/home/rylan/bin:/usr/sbin:./:/usr/bin:/usr/local/include:/home/rylan/povray-3.5:/usr/local/samba/bin/:/usr/local/mysql-standard-4.0.16-pc-linux-i686/bin/mysqladmin:/home/rylan/jdk1.5.0_09/bin/:/usr/local/lib:/home/rylan/jre1.5.0_09/bin:/usr/lib:/usr/local/kde/bin:/usr/local/k3d/bin:/usr/local/mysql/bin:/usr/local/samba/sbin/:/home/rylan/bin:/home/rylan/bin:/usr/sbin:./:/usr/bin:/usr/local/include:/home/rylan/povray-3.5:/usr/local/samba/bin/:/usr/local/mysql-standard-4.0.16-pc-linux-i686/bin/mysqladmin:/home/rylan/jdk1.5.0_09/bin/:/usr/local/lib:/home/rylan/jre1.5.0_09/bin:/usr/lib:/usr/local/kde/bin:/usr/local/k3d/bin:/usr/local/mysql/bin:/usr/local/samba/sbin/

[rylan@development ~]$

And here, for example, is my .bashrc:

Code:

[rylan@development ~]$ vi ~/.bashrc



# .bashrc



# User specific aliases and functions



alias mv='mv -i'

alias ls='ls -lh'



PATH=$PATH:$HOME/bin:/usr/sbin:./:/usr/bin:/usr/local/include:/home/rylan/povray-3.5:/usr/local/samba/bin/:/usr/local/mysql-standard-4.0.16-pc-linux-i686/bin/mysqladmin:/home/rylan/jdk1.5.0_09/bin/:/usr/local/lib:/home/rylan/jre1.5.0_09/bin:/usr/lib:/usr/local/kde/bin:/usr/local/k3d/bin:/usr/local/mysql/bin:/usr/local/samba/sbin/



LD_LIBRARY_PATH=/usr/local/lib:/usr/local/lib/xine/plugins:/usr/lib

LD_RUN_PATH=/usr/local/lib:/usr/local/lib/xine/plugins



export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$HOME/Lightflow

export PYTHONPATH=$PYTHONPATH:/usr/lib/python2.4

export PYTHONHOME=$PYTHONPATH:/usr/lib/python2.4

export LIGHTFLOWPATH=$HOME/Lightflow

export PPMODELER_DIR=/home/rylan/ppModeler



CVSROOT=/usr/local/cvs/; export CVSROOT



CPPFLAGS='-I/usr/local/BerkeleyDB4.3/include'

export CPPFLAGS

LDFLAGS='-L/usr/local/BerkeleyDB4.3/lib'



CFLAGS="-O3 -fomit-frame-pointer -ffast-math -fexpensive-optimizations -fstrict-aliasing -funroll-loops -funroll-all-loops -fforce-addr -finline-functions -frerun-loop-opt -falign-loops=4 -falign-jumps=4 -falign-functions=4 -march=athlon -mmmx -msse -m3dnow"

export CFLAGS

Note the "PATH=" line just under "alias ls='ls -lh'"

Hope this helps,