Invoking a java program from a shell script!

Can this be done?
Ive written a simple compiler for the language buru which just reads/parses and then executes a file for this java like language. But what Im wondering is if I can write a shell script something like this
#!/bin/bash
java Interpreter one.buru
this isn't working so its not correct but if someone knows how to do so there are duke dollars going for it Cheers :)

The most likely reason is that java is not finding your class.
That is probably because when you execute the script the "working directory" is not in a location that works with your class path.
You should be able to find the working directory and class path with the following commands (or some variation of them) added to the beginning of your script.
cd
echo $CLASSPATH

Similar Messages

How to invoke a Java Program from Oracle 10g?(uRGENT)

Hello.
I've a query, that i have a program, that basically retreives the records from the
oracle table and then parser this information and then insert the values in corresponding database base tables. I want that, whenever the new program is inserted, a Trigger should fire and pass the most recently entered record to the Parser Program, means
1) Firing a Trigge
2)Storing the most latest data and pass it to the Parser PROGRAM
Can someone tell me how to do this? How to invoke a Java Program from within the database? Please if anyone has examples provide me. Its very urgent and tell me what is the basic mechanism.
Thankyou.
Ben

With Java Stored Procedures Java may be caleed from a database.
http://www.oracle.com/technology/tech/java/jsp/index.html

Execing a java program from a perl script

Hello,
I have the following perl script that executes a java program called TestSe. It passes its QUERY_STRING to the java program after printing it.
#!/usr/bin/perl
print "Content-type: text/html\n\n";
$in = $ENV{'QUERY_STRING'};
print $in;
exec 'java TestSe '.$in;
This script in placed in a cgi-bin directory on a server.
This script works when i run it manually and hardcode a string value in $in by doing
$in="Acheck";
It prints 'Acheck' on the screen and invokes the java program with Acheck as the parameter.
I tested it by typing
'perl try.cgi' on the shell after logging into the server.
However when I execute this script via. a browser then it does not exec the java program.
The QUERY_STRING is the papameter passed to this script by an html form in a browser that invokes it. The script can print the value of $in in the new browser window that it creates but it is not execing the java program.
Does anyone kow why?
Thanks

Also if you invoke this as a CGI, the server is going to say it got a 5xx error (server exception). That's because the first output of the perl script is going to be that query string, which isn't a proper HTTP header. The server is expecting the CGI to start out with HTTP headers (such as Content-type, Location, Status) and then a blank line.

How to run a java class from a shell script with passing arguments

hi,
I have a jar with all the required classes. I was using ant to run the classes i needed.
But now i want to use a shell script to run the class, also the class accepts some arguments so when script is run it should accept arguments.
So can any one tell me how to set class paths, jar location and call the required class from shell script or batch file with passing arguments to it.
Thanks in advance.

Let's say that the order of arguments is as below
1. Jar file name
2. Classpath
Your shell script would look like this
java -cp $CLASSPATH:$2 -jar $1 I am assuming that your jar file has the required main-class entry in its manifest. Note that $1...$9 represent the arguments to this shell script.
The same goes for a batch file
java -cp %CLASSPATH%;%2 -jar %1

Trouble in Unix calling a Java utility from another shell script

Hi,
I'm able to run a shell script (call it script B) in Unix which calls a Java utility. When I call script B from another script (script A) I get the error below. I have done much work to make sure the environment variables are the same.
java.util.zip.ZipException: error in opening zip f
ile
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(ZipFile.java:69)
at com.something.runtime.ZipFileApplicationSource.<init>(ZipFileApplicationSource.java:22)
at com.something.runtime.ZipFileRuntime.main(ZipFileRuntime.java:35
ANY HELP WOULD BE GREATLY APPRECIATED.
Thanks

Here's my guess, if this doesn't work, post your scripts and maybe that will help.
When you run your script B, you said it works. I think the problem is that when you run script B, your shell and envirenment variables are set by the window you're working in. When you call script B from script A, it creates a new shell to run it and it doesn't run the files that are run when you start a terminal or a telnet(it won't run .cshrc, .kshrc or .login). Depending on what OS you're using, I think the default shell is sh for most of them. The first line of script B should be
#!/(your bin directory)/(shell you're using)
for me it's
#!/bin/tcsh
then you might want to run your startup file to set envirenment variables, paths, etc...
source (your user directory)/(the file name)
for me it's
source ~/.cshrc
Then if you need to set the environment variables in your script.
set CLASSPATH /usr/local/j2ee/bin.....
set PATH /bin:/xyz....
If that doesn't help post your scripts, or if I didn't explain it will enough, just ask.

To invoke a java Program from non-java Clients

I need to develop a program in java which will be invoked using some non java client. For example: for the time being my java application will be invoked by tandem. Also, a huge volume of transactions can be expected to come in and these need to be processed at high speed(response time of 5 seconds or so). Any suggestions ?

By Tandem..I mean a non-java client...
We need to look at possible architectures for implementing the payment module of the an application. We can think of the payment module as a Java process that does the following � 1. validate the card and some other stuff....
The payment module should be able to support non java clients...
Take the case when a customer swipes a card at a store.... Another process (call it the router) determines if the transaction info needs to be sent to my java program... If yes , the router invokes my payment module. The router can vary from store to store ... So my Payment module will be invoked by non java clients... As part of deciding on the architecture we need to decide on the protocol used for communication � http/tcp/iiop etc.
Also, we need to decide on the various options for implementing the payment module.... It can be webservices, EJB Session Beans etc... But the key point is ,.....performance.... A huge volume of transactions can be expected to come in and these need to be processed at high speed(response time of 5 seconds or so).

Executing java from unix shell script

Hi, I am trying to execute java program from a unix shell script and the program has a command line parameter. I have tried in ways like
/opt/java1.4/bin/java CollExtractLoadProcess /home/inbox/archive/file_name
/opt/java1.4/bin/java CollExtractLoadProcess "/home/inbox/archive/file_name"
/opt/java1.4/bin/java CollExtractLoadProcess '/home/inbox/archive/file_name'
/opt/java1.4/bin/java CollExtractLoadProcess file_name
No matter how I execute it gives me the following error
Exception in thread "main" java.lang.ClassFormatError: CollExtractLoadProcess (C
ode segment has wrong length)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:12
3)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
Could someone please let me know what is the correct way of doing this?
Thanks.

Sounds like you either have a corrupt class file or you're using an older version of the JVM to try to execute classe that were compiled for a newer version.

Debugging a program being called from a shell script

hi All,
i want to know how debug a C program being called from A Shell Script,
my script looks like the following :
ecReqProcMain $Cfg/ecReq.g $TotCnt 2>> $ErrFilei also have to pass some arguments to the script itsellft, which in trun going to pass it to the program,
also in some cases i may be required to Pipe some data to the program, like the folowing
cat DataFile | myProgramThanks ,

You can also use ss_attach with the scheme that Anton
suggested above. Instead of inserting "dbx" into your
script, insert "ss_attach" into your script.
It's also possible to change your script to something like this:
cat DataFile | ${DEBUG} myProgram
Then you can run your script like this:
setenv DEBUG ss_attach
ecReqProcMain $Cfg/ecReq.g $TotCnt 2>> $ErrFile
--chris

Execute a java program from an another program

Like we can compile a code from wihin a java file by using the following :
Tool javac = ToolProvider.getSystemJavaCompiler();
Similarly,can we execute i.e. run a java program from within a java file i.e. running d java command from within the java file ??If yes then please tell me how??

suppose on the Unix box or from a Unix script ( korn, perl, bourne, bash) you can run the following java program
java ${JAVA_OPTS} -jar ${GMR_APPS_DIR}/risk.jar -I -c ${COB} -r ${BATCH} -o ${XML_DIR}
in java you can do the following :
Runtime rt = Runtime.getRuntime();
          try {
               Process process = rt.exec("java ${JAVA_OPTS} -jar ${GMR_APPS_DIR}/risk.jar -I -c ${COB} -r ${BATCH} -o ${XML_DIR}
// OR
               Process process = rt.exec("/export/apps/Tools/apache-tomcat-5.5.17/bin/startup.sh");
               // process.destroy(); if you want to kill the process
               process.waitFor();
               int RC = process.exitValue();
               System.out.println(returnOutput(process.getErrorStream()));
               System.out.println(returnOutput(process.getInputStream()));
          } catch (Exception ex) {
               ex.printStackTrace();
empty the output stream from the script
private String returnOutput(InputStream is) throws Exception {
               String s;
               StringBuffer strBuff = new StringBuffer();
               BufferedReader br = new BufferedReader(new InputStreamReader(is));
               while ((s = br.readLine()) != null) {
                    strBuff.append(s);
               return strBuff.toString();
          }You need to relace the ${} by the appropriate values.
Regards,
Alan Mehio
London, UK
Edited by: alan_mehio on Jan 16, 2008 4:21 PM

Can we not run 2 sqlplus programs in a shell script ?

Hi
I have 2 spool programs which need to be called from a shell script .
When i try to do it , only the first spool program runs but not the second one . Is their any reason ?
#!/usr/bin/bash
ORACLE_HOME=/oracle10g/product/10.2.0/client_1
export ORACLE_HOME
sqlplus -s abcdata/daddy@DevOra < lit_fac.sh > output.log 2>&1
sqlplus -s abcdata/daddy@DevOra < lit_fac_cat.sh . output_cat.log 2>&1
exit
How to run 2 scripts containing select queries each from sqlplus in another shell script ?
Thanks in advance ..

user8703472 wrote:
Hi
I have 2 spool programs which need to be called from a shell script .
When i try to do it , only the first spool program runs but not the second one . Is their any reason ?
#!/usr/bin/bash
ORACLE_HOME=/oracle10g/product/10.2.0/client_1
export ORACLE_HOME
sqlplus -s abcdata/daddy@DevOra < lit_fac.sh > output.log 2>&1
sqlplus -s abcdata/daddy@DevOra < lit_fac_cat.sh . output_cat.log 2>&1
exit
How to run 2 scripts containing select queries each from sqlplus in another shell script ?
Thanks in advance ..As I said before .. the term "spool program" has no meaning in Oracle and only serves to cloud the issue. I know you are used to using this term with other products, but "When in Rome ...."
As for your example above, why are you using what appears to be a unix shell script as redirected input into sqlplus? And in the second line, what's with the dot (".") between "lit_fac_cat.sh" and "output_cat.log"?
If these .sh files are really sql files (which is the only thing sqlplus know how to process) then the proper things to do are
1) name them lit_fac.sql and lit_fac_cat.sql
2) feed them to sqlplus in the standard, documented manner:
sqlplus -s abcdata/daddy@DevOra @lit_fac.sql

Passing Multiple Parameters to SQL Script from a Shell Script

Hi Friends,
I have SQL script which accepts 6 parameters.
I am calling this from a shell script as shown below:
sqlplus -s ${ORACLE_ID} @${SQLPATH}KORONT_041.sql ${USER_ID} ${PDC} ${item_number} ${KORDC} ${PDCSET} ${last_Updated_in_hours} Out of the six parameters, item_number is not a mandatory parameter.
When i pass all six parameters, there is no issue.
But when i leave item_number blank, i am getting the below error
Enter value for 6:
User requested Interrupt or EOF detected.Based on the error, it seems that the NULL values for item_number is ignored and SQL*PLUS is waiting for one more input from user.
How can i overcome this issue?
Regards,
Sreekanth

Hi,
I am calling the shell script from concurrent program and below is the log file of the concurrent program.
Copyright (c) 1979, 1999, Oracle Corporation. All rights reserved.
KORONT_041_SH module: KORONT - Daily Item Master Update
+---------------------------------------------------------------------------+
Current system time is 29-JUN-2011 10:09:35
+---------------------------------------------------------------------------+
REQUEST_ID: 68510795
USER_ID: 4219
PDC:    85
Item Number:
KORDC:    124
PDCSET:   1100000003
last_updated_in_hours: 24
EMAIL_ID: [email protected],[email protected]
SQLPATH: /e381/oracle/asodev01appl/custom/motont/1.0.0/sql/
RPTDIR: /e381/oracle/asodev01comn/admin/out/ASODEV01_asoprdb2
RPTFILE: o68510795.out
Table truncated.
*Enter value for 6: User requested Interrupt or EOF detected.*
Table truncated.
old 15:       AND ic.organization_id   = &&4
new 15:       AND ic.organization_id   = 1100000003
0 rows created.
Input truncated to 9 characters
old   8:                AND organization_id   = &&4
new   8:                AND organization_id   = 1100000003
0 rows created.
End of SQL
No record.
+---------------------------------------------------------------------------+
Executing request completion options...
+------------- 1) PRINT   -------------+
Printing output file.
               Request ID : 68510795
         Number of copies : 0
                  Printer : noprint
+--------------------------------------+
Finished executing request completion options.
+---------------------------------------------------------------------------+
Concurrent request completed successfully
Current system time is 29-JUN-2011 10:09:38
+---------------------------------------------------------------------------+Regards,
Sreekanth

Can i call java program from VC++ code...... Urgent!

hi,
I have VC++ code.
I want to run java program from VC++ (SDK).
Can I call it?
plz help it's urgent....
thanks in advance...

We do it all the time using the JNI invocation API (this is actually how the java.exe application works).
Here's a tutorial I just found (not sure how good it is, but it should get you going):
http://www.inonit.com/cygwin/jni/invocationApi/
One note: If you are going to be invoking the JVM from different threads in your native app, there is some special handling you will have to do - the above tutorial doesn't address this scenario (a dig through the JNI docs should help with that one, though).
Cheers,
- K

Running java program from DOS

I have just installed JDK 5.0 (update 4) and have tried writing a small demo program. The .class module is created ok but when invoking java I get "Exception in thread "main" java.lang.NoClassDefFoundError. I am running java from a DOS batch file with one command of c:\progra~1\java\jdk15~1.0_0\java %1. A similar batch file is used to invoke javac which works.
Any ideas what I'm doing wrong? Thanks.

You can't run a Java program from DOS, in fact you can't even install a JRE under that old operating system as Java requires a 32 bit or 64 bit operating system architecture which DOS never offered.
But on the off chance you mean a command prompt from Windows...
Check your classpath, most likely you forgot to add the current directory to that.

Reading variables from a shell script

i was wondering if it is possible to enter variables from a shell script that an sql file can use:
ex:
shell script file
#!/bin/ksh
stty -echo
read pwd?"Enter password for user: "
echo
stty echo
read var?"Please enter value for variable: "
echo
$ORACLE_HOME/bin/sqlplus user/$pwd @TEST.sql
sql file TEST.sql
set serveroutput on
set verify off
spool out.log
update table set parameter_value = '$var' where parameter_name = 'X';
commit;
exit;
spool off;
i tried that and it seems its updating my table with "var" and not what the user entered that is the bind variable $var
am i missing something?

if user hits enter (which means null) can the program
not end and ask the user to enter another value?Try this way :
while :
do
        echo -n "Please enter value for variable: "
        read VAR
        if [ "$VAR" ]; then
                break
        else
                continue
        fi
done

Launching a Java Program from UNIX ( C/C++ )

How do I launch my Java program from c/c++? Do I need to wrap my java command line ( ie. java -classpath .... ) in a C shell ? Is there another way?

How do I launch my Java program from c/c++? Do I need
to wrap my java command line ( ie. java -classpath
.... ) in a C shell ? Is there another way?You can do it directly using Java Native Interface (JNI). Using this approach the Java program runs in the current process.
Sylvia.

Invoking a java program from a shell script!

Similar Messages

Maybe you are looking for