I was trying to upgrade my java 1.6.0_20 to java 1.6.0_24 as a self-learning experience. Felt nervous and want to know the right way. Yes, I downloaded the file from SUN:
Code:
jre-6u24-linux-x64.bin
and executed it. It was successfully installed in my local folder
Code:
/Downloads/jre1.6.0_24/
But, when I check the version it still displayed the old version which is linked the java executable by two symlinks after I recursively checked each file (for simplicity I put them directly here):
Code:
$ java -version
java version "1.6.0_20"
$which java
/usr/bin/java---> /etc/alternatives/java--->/usr/lib/jvm/java-6-openjdk/jre/bin/java
Now, my question is: can I replace the old java executable with the new one, or simply replace the whole folder that contains the java executable? I am aware there some new files. Not sure the whole story while I am trying to understand the basics.
I am using Ubuntu 10.10 Maverick Meerkat - released in October 2010 amd64-server in linux kernel 2.6.35.27-server & gnome 2.32.0.
Please someone give me a explanation. Thanks a lot!
I've been trying to install Top on our Solaris box but it's giving me some trouble.
The uname -a command shows
SunOS servername 5.9 Generic sun4u sparc SUNW,Ultra-250
I downloaded Top form www.unixtop.com.
On the initial install I got errors because I didn't have a C compiler installed.... (2 Replies)
I have run into a problem while attempting to de-install netconnect from a Sol8 box. We got an error during the un-install script when it tries to remove SUNWsrsrp. It can't find the srsuser. We have no idea what user was specified initially. I have tried to remove the package on its own, to no... (2 Replies)
Forgive the sheer volume of verbiage:
Sco Openserver 6 - how to install Java 1.42_14b:
The documentation says:
"Make a subdirectory and unwind the tar file into that subdirectory.
mkdir JAVA142
cd JAVA142; tar -xf ../OSR6_Java2_142.VOLS.tar
Run the Software Manager with the command: ... (6 Replies)
hi there,
i have a hp DL380G5 with hpsas array controller P400.
when installing, i use bootstring as following;
defbootstr link=hpsas hd=Sdsk Sdsk=hpsas(0,0,0,0) Srom=wd(0,0,0)
then BTLD disk boots ok and looks like the drivers are loaded, all devices show up in boot screen, giving me a... (1 Reply)
Hello.
I was trying to installe oracle 10g on solaris t0 x86 and got few exception? Could you please suggest, what might be going wrong?
$ ls -l
total 32
drwxr-xr-x 9 oracle dba 512 Nov 21 03:50 doc
drwxr-xr-x 5 oracle dba 512 Nov 21 03:50 install
drwxr-xr-x 2... (5 Replies)
I just built my new computer with a q6600 quad core, 4 gig ram, Nvidia vidoo card but when I try to install the latest Solaris 10 on it the keyboard is not being detected when the installation starts so I'm unable to go complete the installation.
First I tried a USB keyboard and it didn't work,... (2 Replies)
Hi Forum
Im a new to fedora and was wondering ,Can anybody direct me to a site that shows me how to install Java EE 6 SDK Update 1 (with JDK 6 Update 23) for fedora 14. NOT openjdk i need oracles java to develop a web app using tomcat 7.0
Any help would be much appreciated and thank you in advance (1 Reply)
I just intalled java8_64.jre and .sdk respectively
installp -agXYd . Java8_64.jre Java8_64.sdk 2>&1 | tee installp.log
Worked like a champ. Now I see this--
jeff@server:/usr> ls -l | grep java
drwxr-xr-x 9 bin bin 512 Sep 22 2010 java14
drwxr-xr-x 7 bin bin ... (9 Replies)
Discussion started by: jeffs42885
9 Replies
LEARN ABOUT CENTOS
java-wrappers
JAVA-WRAPPERS(7) Java wrappers JAVA-WRAPPERS(7)NAME
java-wrappers - capacities shared by java wrapper scripts
DESCRIPTION
Most Java programs are not run directly, but through small shell scripts that take care of various things, such as finding a suitable java
environment and looking for libraries.
To ease the task of the maintainers, they rely on a library providing runtime detection, library detection and other features. This manual
page describes the common features of all those scripts, and to which point you can configure them. This is mainly done via environment
variables.
ENVIRONMENT VARIABLES
java-wrappers understands some environment variables:
JAVA_CMD
The java command that will be run. If this variable is set, it disables all lookup for a java runtime.
JAVA_BINDIR
Specifies a directory that will be looked for a java or a jdb executable (depending on the setting of JAVA_DEBUGGER). It has prece-
dence over JAVA_HOME but not over JAVA_CMD.
JAVA_HOME
A path to a java runtime. If this variable is set, all lookup for a java runtime is disabled, except that if no java executable is
found in the path, the command java is used.
JAVA_FLAVOR
A probably more easy-to-use version of the JAVA_HOME variable: instead of specifying the full path of the java runtime, you name it.
List of available flavors can be found in the file /usr/lib/java-wrappers/jvm-list.sh. See examples below.
JAVA_DEBUGGER
If this is set, the wrapper will try to pick up a java debugger rather than a java interpreter. This will fail if the jbd of the
runtime found is a stub.
JAVA_CLASSPATH
Additional classpath, will have priority over the one found by the wrapper.
JAVA_ARGS
Additional arguments to the java command. They will come before all other arguments.
FORCE_CLASSPATH
If this variable is set, it will be the only classpath. You'd better know what you are doing.
DEBUG_WRAPPER
This is probably the most important variable; if it set, the wrapper will print out useful information as it goes by its business,
such as which runtime it did find, and which command is run eventually.
JAVA_JARPATH
The path where the wrappers will go looking for jar archives. If not set, the wrapper will look into the default directory,
/usr/share/java. Warning : the wrapper will not look anywhere else than in JAVA_JARPATH. Setting it incorrectly will most probably
result in early crashes.
EXAMPLES
The examples all rely on rasterizer(1), from the package libbatik-java, but they really apply to all scripts that use java-wrappers.
Print out debugging information:
DEBUG_WRAPPER=1 rasterizer
Limit rasterizer's memory to 80 MB:
JAVA_ARGS=-Xmx80m rasterizer
Force rasterizer to run with kaffe(1):
JAVA_HOME=/usr/lib/kaffe rasterizer
The same, but using JAVA_BINDIR:
JAVA_BINDIR=/usr/lib/kaffe/bin rasterizer
Force rasterizer to run with openjdk:
JAVA_FLAVOR=openjdk rasterizer
Debug rasterizer with Sun's debugger, while printing debugging information from the wrapper:
DEBUG_WRAPPER=1 JAVA_CMD=/usr/lib/jvm/java-6-sun/bin/jdb rasterizer
BUGS
Care has been taken to make the wrappers bug-free. If that was not the case, please file a bug report against the java-wrappers package.
If you wish to submit any problem with a java executable relying on java-wrappers, please also submit the output of the command run with
DEBUG_WRAPPER=1. It will save one mail exchange and therefore potentially reduce the time it takes to fix the bug.
DEVELOPERS
There is currently no documentation about writing a wrapper script save the comments in /usr/lib/java-wrappers/java-wrappers.sh. If you
have to write one, we suggest you base yourself upon, for instance, the rasterizer wrapper script, or any other one (just pick up any
direct reverse dependency of java-wrappers and look for scripts).
SEE ALSO java(1), jdb(1)
/usr/lib/java-wrappers/java-wrappers.sh
AUTHOR
java-wrappers and its documentation were written by Vincent Fourmond <fourmond@debian.org>
Version 0.1.16 2010-05-04 JAVA-WRAPPERS(7)