Setting java path in Linux

Hi,
I have installed Java 7 using rpm file: jdk-7u17-linux-x64.rpm, with the help of below command on my linux box:
rpm -ivh jdk-7u17-linux-x64.rpm
After completing the installation the java is installed in location "/usr/java/jdk1.7.0_17", when I try to find the jave version I am getting different result:
java version "1.6.0_22"
OpenJDK Runtime Environment (IcedTea6 1.10.4) (rhel-1.41.1.10.4.el6-x86_64)
OpenJDK 64-Bit Server VM (build 20.0-b11, mixed mode)
It is still pointing to 1.6 which was installed on my linux box earlier. How can I make sure that the java command uses the latest installed JDK 7?

Hi.
which java show what file select for this command.
Environment variable PATH set order of path for find executable file.
Try set:
export PATH=/usr/java/jdk1.7.0_17/bin:$PATH
export JAVA_HOME=/usr/java/jdk1.7.0_17
add this commands to $HOME/.profile for make this changes permanent.
Regards.

Similar Messages

Need help setting java paths?

I have a number of java files set up like this:
com.pogo.chess2.Applet, com.pogo.chess2.game.Applet, etc
Now each class file uses the keyword: package followed with its associating directory, for example Applet.class would look like this:
package com.pogo.chess2;
import com.pogo.game.external.b;
How do I create a new java project and properly set the path?
Basically I have all of my java code in a folder called com, which has subdirectories with java files as well. What is a package? How do I set it up using a gui such as JCreator Le? Is there a way to drag the folder com to the project and all the files will load?
Thanks in advance.

For package, see
http://java.sun.com/docs/books/tutorial/java/concepts/package.html
The rest of your questions involve details of editor/IDE usage. None of them relate to Java. Read the information or Helps from the product you're using.

How to set Java options in Linux?

Dear all, I'm using Ubuntu, Java version is 1.6.0.3
I want to run Java with some options changed, such as this in command line:
java -server -Xms128m -Xmx512m -Dcom.sun.management.jmxremote.port=8999 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.rmi.server.hostname=11.40.5.62 -classpath . HelloWorld
This works well. However, I want to set the options "-server -Xms128m -Xmx512m -Dcom.sun.management.jmxremote.port=8999 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.rmi.server.hostname=11.40.5.62" as my java default options so that I only have to use
java -classpath . HelloWorld
And also I want the options to work on my HelloWorld.war file. (This is what I need finally)
I changed catalina.sh in tomcat, but it seems like it doesn't help. Any suggestions? Thank you!!!

aiGrace wrote:
I want to set the options "-server -Xms128m -Xmx512m -Dcom.sun.management.jmxremote.port=8999 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.rmi.server.hostname=11.40.5.62" as my java default options so that I only have to use
java -classpath . HelloWorldUse the *nix alias command
alias java="java -server -Xms128m -Xmx512m -Dcom.sun.management.jmxremote.port=8999 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.rmi.server.hostname=11.40.5.62"

Set java path to run jar in command prompt

i have installled only jre.. i dont have jdk..
Is it possible to run jar command in command prompt.
if possible please give me jar command...
thanks in advance

i have installled only jre.. i dont have jdk..ok
Is it possible to run jar command in command prompt.Please, read java tutorial before posting such question
if possible please give me jar command...Please, read java tutorial before posting such question

Problem in setting path and classpath for java in RedHat linux 9

Hi ,
i am not able to set the PATH and CLASSPATH for j2sdk1.4.2_06
I have tried with export PATH=$PATH:/usr/j2sdk1.4.2_06/bin
and export CLASSPATH=$CLASSPATH:/usr/j2sdk1.4.2_06/lib
in terminal
but i want to configure it as permenant way for the jre and jdk
and we should only type java or javac according to the requirement
regards mihir...

type those in .bashrc ... save and exit
then at prompt, type 'source .bashrc'
this is the permanent solution ...
bhalo thakun

Setting java.library.path property in java code

Hi,
i'd like to set java.library.path property in java code to load a dll-library. I know that a funtional way is to run JVM with parameter -Djava.library.path=c:\tmp, but I need it do it IN CODE.
I'v tried this:
System.setProperty("java.library.path", "c:\\tmp");
System.loadLibrary("libapr");The library 'libapr.dll' is situated really in 'c:\tmp' directory, but I get 'java.lang.UnsatisfiedLinkError: no libapr in java.library.path' exception.
It seems like the already running java program doesn't use actual java.library.path set in previous step.
Is there any possibility to set java.library.path property in java code?
Thanx
Brny

I think the following code should work:
// Reset the "sys_paths" field of the ClassLoader to null.
          Class clazz = ClassLoader.class;
          Field field = clazz.getDeclaredField("sys_paths");
          boolean accessible = field.isAccessible();
          if (!accessible)
               field.setAccessible(true);
          Object original = field.get(clazz);
          // Reset it to null so that whenever "System.loadLibrary" is called, it will be reconstructed with the changed value.
          field.set(clazz, null);
          try {
               // Change the value and load the library.
               System.setProperty("java.library.path", "c:\\tmp");
               System.loadLibrary("libapr");
          finally {
               //Revert back the changes.
               field.set(clazz, original);
               field.setAccessible(accessible);
The idea is to make the static field "sys_paths" null so that it would construct the paths from the changed value.

Java Editor in Linux

hi all,
can someone suggest a good Java Editor for Linux? I'm currently using the BlueFish Editor and i press the DOT nothing is come out, i hope that to get an editor where the members can come out after the dot is presses. By doing this, it will minimise a lot of typing error. I had try to install the JCreator on my system, but the setup cannot run on Linux.

u mean just copy the installation to the
/usr/local??
Because i dun have the root permission and the
installation file has been downloaded at the desktopIf you don't have root permissions (and can't get them) then you probably will not be able to copy the JDK to /usr/local . You don't need the JDK to be anywhere in particular so if it is installed in your home directory then leave it there. Just make sure your 'path' is set correctly!
To check you have it configured right, use
java -version
and it should report
java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode, sharing)

Bash shell does not recognise 'java', 'javac' commands (Linux command line)

i' ve used javac and java compile & execute commands to build the same application on the DOS command line with Windows - no problem.
But when I try to compile the same file on the command line under Linux Redhat (7.1) using Bash shell i get <bash: javac: command not found> and <bash: java: command not found>.
In both cases I'm using j2sdk1.4.2 downloaded from java.sun.com for Windows & Linux respectively.
I make sure I have both the javac and the file I want to compile in the same directory ../j2sdk1.4.2/bin for both the Windows and the Linux applications.
Is there something I need to do to get bash to recognise javac, java etc? Is there a different setup procedure?
Any angles on this are much appreciated ..

Have you tried these correctly..
Set the CLASSPATH environment variable to include whichever directories you like, eg (on bash) type:
export CLASSPATH=$CLASSPATH:.:<your java dirs>
To make java easier to run, put the directory in which it is installed into your path:
export JAVA_HOME=<where you installed java>
Then do
export PATH=$PATH:$JAVA_HOME/bin
verify it has worked by simply typing
java
You can put all of these commands into the .*rc file for your shell, so that they are executed every time you open the shell. So if you are using bash you can put them into ~/.bashrc
Read up setting the PATH and CLASSPATH for more info.
This shall resolve the issue .

Running an Executable from a JAVA API in LINUX

Hi,
I want to run a C++ executable from my JAVA API in Linux. This is the sample of the code which i
have used
String[] arguments = new String[5] ;
arguments[0] = "/usr/local/code/fun/dcmdump";
arguments[1] = "+f";
arguments[2] = "/usr/local/code/fun/240.dcm";
arguments[3] = "+W";
arguments[4] = "/usr/local/code/fun";
Process p = Runtime.getRuntime().exec(arguments);
On running the test file, the program seems to hang there. dcmdump is the name of my c++ executable and arguments [1] - [4] are its inputs. dcmdump should accepts these inputs and dump the contents of the file 240.dcm into the path mentioned by the last argument.
But my program jst hangs. Is the the correct way to go about??
Any suggestions or ideas r welcome!!
Please let me know
Thanks
Dhaval

Hi
I did the following
String[] cmd ={"/bin/sh","-c","/usr/local/code/fun/dcmdump","+f","/usr/local/code/fun/240.dcm","+W","/usr/local/code/fun"};
Process p = Runtime.getRuntime().exec(cmd);
When i execute my application, i see the following output
[root@voltaire fun]# java TestRead2
$dcmtk: dcmdump v3.5.3 2004-05-27 $
dcmdump: Dump DICOM file and data set
usage: dcmdump [options] dcmfile-in...
parameters:
dcmfile-in DICOM input filename to be dumped
general options:
I try to write the arguments in the command line when i execute but still get the same output.
I dont think dcmdump is receving any arguements..
Executing /bin/sh does it mean you have to mention the arguements in the command in the same manner that i have the String[] cmd??
PLease let me know..
Also i have put a Buffered reader to capture the output of dcmdump but I dont think i have reached my application has reached thr as yet. The code i have written is
// put a BufferedReader on the output
InputStream inputstream = p.getInputStream();
InputStreamReader inputstreamreader = new InputStreamReader(inputstream);
BufferedReader bufferedreader = new BufferedReader(inputstreamreader);
// read the output
String line;
while ((line = bufferedreader.readLine()) != null) {
System.out.println(line);
Please let me know your suggestions/ideas.
thanks

Java running under linux with crontab

I'm having a problem:
i want to run a java program under linux with crontab.
my classes are in a directory and aren't in a package. i run em by invoking ./start which is a small script that i wrote. The script is in the same dir as the classes and invokes java by "java Main >>logjava.txt " but this doesn't seem to work all i get is an empty logfile
i need to run the program every day at 0800 so i inserted the following in crontab:
0 8 * 1-5 /var/"path"/start > logjava (where path is the path to the classes dir)
if i run the cmdline from anywhere on the prompt i get the result i want. I think it's because the cron runs it from the root dir thus making java unable to find the classes
Any suggestions would be welcome. or can some1 tell me how to make linux executables from the java (i usually use jsmooth for the windows exe)

You can execute several commands in the process started by cron. You separate them using semicolons.
Have you tried a cron entry like this:
0 8 * 1-5 cd /var/"path";pwd;echo $PATH; ./start > logjavaOr, you may need to make sure the process started by cron gets the same environment as your interactive shells do, by explicitly loading your setup or .login scripts:
0 8 * 1-5 . $HOME/.setup;cd /var/"path";pwd;echo $PATH; ./start > logjava

How can i set a path for my deployment files in weblogic server 10.3

Hi
How can i set the path for my WAR ,JAR files while deploying.i am using the wls10.3 version.
is there any scripts for this ,please provide me.
my Application is ADF 11g application.

By "path", I assume you mean "classpath".
The simplest way is simply to include the jars you need inside the web application or web module's WEB-INF/lib directory, EJB module's META-INF/lib directory, or EAR lib directory.
If that's not practical, if you use NodeManager to start your servers, you can go to the "Server Start" tab in the server definition in the WebLogic console and edit the "Classpath" field, which defaults to no value. You can specify a classpath value there. Note that if you specify a value there, it REPLACES the default classpath for the server, it doesn't add to it. If you need to just add to it (a much more likely scenario), if the value references the value "$CLASSPATH" in it, that will reference the original classpath value that the server would have had.
So, for instance, if you wanted to include the MQ jars in the server classpath, you could set a value like this:
/usr/java/mq/lib/mq.jar:/usr/java/mq/lib/mqstuff.jar:$CLASSPATH

How to set dynamic path in forwards action

Hi All,
i have a requirement to set my path dynamically in forward action
suppose i have
@Jpf.Action(forwards = { @Jpf.Forward(name = "success1", path = "/output1.jsp") })
     public Forward testIpc1() {
          Forward forward = new Forward("success1");
          System.out.println("IN PageflowportletController :: testIpc1() method called");
          return forward;
Here the path="/output1.jsp" is hardcoded.is there any way to set the path dynamically in forwards action
@Jpf.Action(forwards = { @Jpf.Forward(name = "success1", path = dynamic_path) })
how do i get the dynamic path set in my forwards action.
Suggestions provided would be really helpful
Thanks,
Deepak

http://java.sun.com/j2se/1.5.0/docs/tooldocs/windows/classpath.html

Finding the multiple JRE installed path in Linux OS

for my requirement on finding the JRE installaiton folder on windows and Linux machines , I can able to get it in windows but I am facing problem in getting the jre installed path from Linux machine. I am using Debian etch OS. Can anyone help me to find the installed path of JRE in Linux machine using a Java program. I need to find the multuiple JRE installed paths, i.e. my java program should find all the JRE installed paths and versions of the same.
Thanks in advance.
Edited by: VijayForumScreen on Jul 29, 2008 5:46 AM

As per the terminal prompt its ok...but i need the java concept to retrieve the versions and installed paths of the all JRE.
e.g;For current JRE we can get by,
System.out.println(System.getProperty("java.version"));
System.out.println(System.getProperty("java.home"));
Output:
1.5.0_10
/usr/lib/jvm/java-1.5.0-sun-1.5.0.10/jre
If i installed 1.3 and 1.4 also.,
How can i get installed paths and versions for all three 1.3,1.4 and 1.5 JRE's

Setting the path in Windows98

Hello,
I'd like to run my java application on a computer with Windows 98, and not in the java bin directory. I'm familiar with setting the path variables in Windows XP. You go to control panel -> System -> Advanced -> Environment Variable -> and set them as you like. In Windows 98 there seems to be no such method. Instead I'm hacking away at the autoexec.bat file, but I still can't seem to get it to work. Currently, this is what my autoexec.bat file looks like:
REM [Header]
@ECHO OFF
REM [CD-ROM Drive]
REM c:\windows\command\mscdex /d:gem001
REM [Miscellaneous]
REM [Display]
REM [Sound, MIDI, or Video Capture Card]
REM [Mouse]
c:\windows\cwcdata\cwcdos.exe
PATH=c:\Program Files\Java\jre1.5.0_01\bin;c:\Program Files\Java\jdk1.5.0_01\bin;
CLASSPATH=c:\Program Files\Java\jre1.5.0_01\bin;c:\Program Files\Java\jdk1.5.0_01\bin;
I put the path to both the JRE and JDK in both the PATH and CLASSPATH variables just to be sure. From a DOS prompt, the "java" command seems to work from anywhere, but the "javac" command still only works in the bin directory. Can any think of where I'm going wrong?

This is copied from the installation Instructions for the product you downloaded. (Note the use of quotation marks - eithr do that or uses the 8.3 format of the directory name)
Microsoft Windows 98 - To set the PATH permanently, open the AUTOEXEC.BAT file and add or change the PATH statement as follows:
Start the system editor. Choose "Start", "Run" and enter sysedit, then click OK. The system editor starts up with several windows showing. Go to the window that is displaying AUTOEXEC.BAT
Look for the PATH statement. (If you don't have one, add one.) If you're not sure where to add the path, add it to the right end of the PATH. For example, in the following PATH statement, we have added the bin directory at the right end:
PATH C:\WINDOWS;C:\WINDOWS\COMMAND;"C:\PROGRAM FILES\JAVA\JDK1.5.0_<version>\BIN"
Capitalization doesn't matter. The PATH can be a series of directories separated by semi-colons (;). Microsoft Windows searches for programs in the PATH directories in order, from left to right. You should only have one bin directory for a JDK in the path at a time (those following the first are ignored), so if one is already present, you can update it to jdk1.5.0_<version>.
To make the path take effect in the current Command Prompt window, execute the following:
C:> c:\autoexec.bat
To find out the current value of your PATH, to see if it took effect, at the command prompt, type:
C:> path

How to set the PATH in Terminal?

As a newbie to Bash and the Terminal, in connection with installing a new version of Ruby and various add-ons, I have been messing around with changing the PATH via various methods I've found on the internet, and trying to add a new directory to my PATH. Unfortunately, I cannot figure out how to set the PATH correctly. Here is what I understand so far:
1. Bash first looks to ".bash_profile" in the home directory for PATH settings.
2. If none, Bash then looks to ".bash_login" for PATH settings.
3. If none, Bash then looks to ".profile".
4. If none, Bash then looks to a system file in "/etc/profile" for default PATH settings.
5. For a new shell after login, Bash looks for a ".bashrc" file.
I cannot find any of the above files (I have Finder set to show hidden files already). Somehow, following some instructions from the internet without really knowing what I was doing over the past week I have set my PATH as follows:
/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/Users/*****/src:/usr/X11/bin
but I cannot find the file that is setting this PATH. I have tried creating a new ".bash_profile" shell file and putting it in various places such as "/bin" and "/usr/bin" but the file is not being read.
* As a temporary workaround I tried using the command "source .bash_profile" upon login to set the PATH using the .bash_profile file that I created, but it does not work.
* I am able to temporarily alter the path using the command "PATH=/usr/local/bin:$PATH" but this only lasts for an active shell; when I close out and reopen a new shell, it reverts to the default.
So my questions are:
Is it correct that there is a "/etc/profile" somewhere that is setting the default PATH? If so where is it? Should I alter it, or create a new ".bash_profile" somewhere to set the PATH? If not, where is my PATH being set? If I should create a new ".bash_profile", what exactly should go in it?
Thanks in advance for any assistance.

... I created a new ".bash_profile" file directly under my home directory and it worked like a charm. Below is the content of the file:
"PATH=/usr/local/bin:/bin/:/sbin/:/usr/bin/:/usr/sbin/:/Users/******/Ruby:/Users/*******/src:/Users/******/Java Programs/"
What are the "..."'s? Is that just you, or is the contents of the file actually inside of double quotes?
is there an 'export PATH' also in the file? As in
PATH=/usr/local/bin:/bin/:/sbin/:/usr/bin/:/usr/sbin/:/Users/******/Ruby:/Users/*******/src:/Users/******/Java Programs/
export PATH
And did you either restart your Terminal session so your .bash_profile was read, or issue a 'source .bash_profile' command to execute the .bash_profile after your change?
The only remaining problem is that from the home directory, I'm unable to directly run programs in the above-designated subdirectories (without first navigating to the subdirectory containing the file. Is there something wrong with the syntax or order of the directories I put in the path?
For example: there is a file called "newprogram.rb" in the "Ruby" directory listed above. I should be able to execute it from the home directory using "ruby newprogram.rb" but it does not work. The same command works fine from within the "Ruby" directory.
Does the 'ruby' command search PATH to find its scripts?
Have you read the "man ruby" man page to see if it talks about PATH?
A common Unix feature is that programs and scripts with the executable bit set, and are located in a PATH directory, will be run if you just type their names.
For example, if the first line of newprogram.rb script starts with
#!/usr/bin/ruby
and if the script is executable
chmod +x newprogram.rb
And if it is in a directory in PATH, then just typing
newprogram.rb
should run your perl script using /usr/bin/ruby. If you want to use a different version of Ruby, then change the #! line so it point to your version of Ruby. Or if your version of Ruby is found earlier in PATH then the /usr/bin/ruby, you can use
#!/usr/bin/env ruby
as your script's first line which will search PATH for 'ruby' and use the first one it finds.
Message was edited by: BobHarris

Setting java path in Linux

Similar Messages

Maybe you are looking for