How can i run javac command in a Servlet?

I wanna use javac command in a Servlet ,
but it can not load the tomcat's lib.
What can i do?

Try out. But Iam not sure.
Runtime.getRuntime("Cmd.Exe"). This wiil open the dos prompt.
Create ouput stream and write in to it.Try to execute key.
To invoke the enter key , use ascii value of the enter key

Similar Messages

Please help How can i run Os commands thru Java programs

Hey,
I want to stop and restart the linux server thru java program.Is it possible to run the os commands thru java program.
I had it thru Runtime.getRuntime().exec("*.exe");
it only runs the exe files.How can run files other than exe files like .bat,com ans shell commands..Any body knows please help with the code..or mail to this address
[email protected]
thankyou,
regards,
j.mouli

What about "start command.com /C execute.bat", or using the overload that takes a String[] as argument?
What if you use the the full path of execute.bat?
What error code do you get?
And what comes th linux, I'm not sure... you'll need a shell interpreter there too, me thinks. (never had to run anything with runtime.exec on linux). Check the man pages if csh, bash, ksh, or what ever shell you like.

How can one run OS commands from JSP's?

Hi
I figured out the perms problem I had, and running a java class that calls Runtime.exec() now works - apparently; in fact, it doesn't really run the OS command, but returns "OK".
Anyone have an idea how to make it actually run?
Thanks,
Paulo

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Paulo Rodrigues ([email protected]):
Hi
I figured out the perms problem I had, and running a java class that calls Runtime.exec() now works - apparently; in fact, it doesn't really run the OS command, but returns "OK".
Anyone have an idea how to make it actually run?
Thanks,
Paulo<HR></BLOCKQUOTE>
Hi Paulo, i use for that function the following code:
// JDC Tech Tips February 15, 2000
import java.io.*;
import java.util.ArrayList;
public class ExecDemo {
static public String[] runCommand(String cmd)
throws IOException {
// set up list to capture command output lines
ArrayList list = new ArrayList();
// start command running
Process proc = Runtime.getRuntime().exec(cmd);
// get command's output stream and
// put a buffered reader input stream on it
InputStream istr = proc.getInputStream();
BufferedReader br =
new BufferedReader(new InputStreamReader(istr));
// read output lines from command
String str;
while ((str = br.readLine()) != null)
list.add(str);
// wait for command to terminate
try {
proc.waitFor();
catch (InterruptedException e) {
System.err.println("process was interrupted");
// check its exit value
if (proc.exitValue() != 0)
System.err.println("exit value was non-zero");
// close stream
br.close();
// return list of strings to caller
return (String[])list.toArray(new String[0]);
public static void main(String args[]) throws IOException {
try {
// run a command
String outlist[] = runCommand("rm ./dummy");
// String outlist[] = runCommand("ls");
// display its output
for (int i = 0; i < outlist.length; i++)
System.out.println(outlist);
catch (IOException e) {
System.err.println(e);
Gert
null

How can I run different commands in the same system exec window?

I want to open a window (cygwin) on my Xp machine and sent commands within that window. I then have to monitor what the responses are coming back into the window that was launched. Any ideas on how to do this? I have been playing with the system exec VI but can't seem to get it to do what I want. Any help would be appreciated. Thanks - Troy

Hello,
Have you tried setting the wait until completion to true on the System Exec VI? If so, the LabVIEW documentation claims that the parameter "standard output returns information from the program you called if wait until completion is TRUE. If wait until completion is FALSE, System Exec returns an empty string."
Could this be the answer to the problem of getting the data returned?
I hope this helps!
Best Regards,
JLS
Best,
JLS
Sixclear

How can you run a command with elevated rights on a remote server with invoke-command ?

I am trying to run a script on a remote server with invoke-command. The script is starting and is running fine, but the problem is that it should be running with elevated rights on the remote server. On the server where I start the invoke-command, my account has the necessary rights.
The server were I launch the invoke-command is a W2K8 R2. The remote box is a W2K3 with powershell v2.0 installed.
When I launch the script on the remote-box from the command line, I don't get the access denied's.
Is there a way to do this ?
Thanks in advance

The script that I want to run is to install the windows updates. I get an access denied on the download of the updates.
When I execute the script on an W2K8 box, (not remotely) and I run it with non-elevated rights, I get the same error.
The script is running fine when it is launched on W2K3 box locally with a domain account that has local admin rights, or on a W2K8 R2 server with a domain account that has local admin rights, but with elevated rights.
Thanks in advance for your help.
#=== start script ====
param($installOption="TESTINSTALL",$rebootOption="NOREBOOT")
Function Show-Help
Write-Host ""
Write-Host "SCRIPT: $scriptName <installOption> <RebootOption>"
Write-Host ""
Write-Host "DESCRIPTION: Installatie van WSUS updates op de lokale server"
Write-Host ""
Write-Host "PARAMETERS"
Write-Host " -installOption <[INSTALL|TESTINSTALL]>"
Write-Host " -rebootOption <[REBOOT|NOREBOOT|REBOOT_IF_UPDATED]>"
Write-Host ""
Write-Host "EXAMPLE:"
Write-Host "$ScriptName -installOption INSTALL -rebootOption REBOOT_IF_UPDATED"
Write-Host "$ScriptNAme INSTALL NOREBOOT"
Write-Host ""
Write-Host "Indien beide parameter weggelaten worden zijn de defaultwaarden :"
Write-Host " installOption=TESTINSTALL "
Write-Host " RebootOption=NOREBOOT"
Write-Host ""
Exit
#Include alle globale variablen
$CEIF_WIN_PATH = (get-content env:CEIF_WIN_PATH)
$includeFile=$CEIF_WIN_PATH + "\Scripts\include_win.ps1"
. $includeFile
#initialiseer error count
$errcnt=0
$scriptName=$MyInvocation.MyCommand.Name
#argumenten controleren
$arrInstallOption= "TESTINSTALL", "INSTALL" # Mandatory variable with predefined values
If (!($arrInstallOption –contains $installOption)){ Show-Help }
$arrRebootOption = "REBOOT", "NOREBOOT","REBOOT_IF_UPDATED" # Mandatory variable with predefined values
If (!($arrRebootOption –contains $rebootOption)){ Show-Help }
#Logfile opbouwen
$logfile = get-logfileName($MyInvocation.MyCommand.Name)
Log-scriptStart $MyInvocation.MyCommand.Name $logfile
function Get-WIAStatusValue($value)
switch -exact ($value)
0 {"NotStarted"}
1 {"InProgress"}
2 {"Succeeded"}
3 {"SucceededWithErrors"}
4 {"Failed"}
5 {"Aborted"}
function boot-server()
if ($installOption -eq "TESTINSTALL")
logger "TESTINSTALL : - Reboot local Server" $logfile
else
logger " - Reboot local Server" $logfile
$thisServer = gwmi win32_operatingsystem
$thisServer.psbase.Scope.Options.EnablePrivileges = $true
$thisServer.Reboot()
$logmsg="Install option = " + $installOption + ", RebootOption = $rebootOption"
logger "$logmsg" $logfile
logger "" $logfile
logger " - Creating WU COM object" $logfile
$UpdateSession = New-Object -ComObject Microsoft.Update.Session
$UpdateSearcher = $UpdateSession.CreateUpdateSearcher()
logger " - Searching for Updates" $logfile
$SearchResult = $UpdateSearcher.Search("IsAssigned=1 and IsHidden=0 and IsInstalled=0")
logger " - Found [$($SearchResult.Updates.count)] Updates to Download and install" $logfile
$Updates=$($SearchResult.Updates.count)
logger "" $logfile
foreach($Update in $SearchResult.Updates)
if ($Update.EulaAccepted -eq 0)
$Update.AcceptEula()
# Add Update to Collection
$UpdatesCollection = New-Object -ComObject Microsoft.Update.UpdateColl
$UpdatesCollection.Add($Update) | out-null
if ($installOption -eq "TESTINSTALL")
else
# Download
logger " + Downloading Update $($Update.Title)" $logfile
$UpdatesDownloader = $UpdateSession.CreateUpdateDownloader()
$UpdatesDownloader.Updates = $UpdatesCollection
$DownloadResult = $UpdatesDownloader.Download()
$Message = " - Download {0}" -f (Get-WIAStatusValue $DownloadResult.ResultCode)
if ($DownloadResult.ResultCode -eq 4 )
{ $errcnt = 1 }
logger $message $logfile
# Install
logger " - Installing Update" $logfile
$UpdatesInstaller = $UpdateSession.CreateUpdateInstaller()
$UpdatesInstaller.Updates = $UpdatesCollection
$InstallResult = $UpdatesInstaller.Install()
$Message = " - Install {0}" -f (Get-WIAStatusValue $InstallResult.ResultCode)
if ($InstallResult.ResultCode -eq 4 )
{ $errcnt = 1 }
logger $message $logfile
logger "" $logfile
#Indien er een fout gebeurde tijdens download/installatie -> stuur mail naar windowsteam
if ( $errcnt -gt 0 )
logger " - Fout tijdens de uitvoering van script -> send mail" $logfile
$mailSubject=$MyInvocation.MyCommand.Name
$msg = new-object Net.Mail.MailMessage
$att = new-object Net.Mail.Attachment($logfile)
$smtp = new-object Net.Mail.SmtpClient($smtpServer)
$msg.From = $mailFrom
$msg.To.Add($mailTo)
$msg.Subject = $mailSubject
$msg.Body = “Meer details in attachement”
$msg.Attachments.Add($att)
$smtp.Send($msg)
#Moet de server herstart worden ?
if ($rebootOption -eq "REBOOT_IF_UPDATED" )
if ($Updates -gt 0)
#Reboot the server when updates are installed
boot-server
elseif ($rebootOption -eq "REBOOT")
#reboot the server always
boot-server
else
#Do not reboot the server
logger "Do not reboot the server" $logfile
Log-scriptEnd $MyInvocation.MyCommand.Name $logfile
exit 0

How can I run Runtime.exec command in Java To invoke several other javas?

Dear Friends:
I met a problem when I want to use a Java program to run other java processes by Runtime.exec command,
How can I run Runtime.exec command in Java To invoke several other java processes??
see code below,
I want to use HelloHappyCall to call both HappyHoliday.java and HellowWorld.java,
[1]. main program,
package abc;
import java.util.*;
import java.io.*;
class HelloHappyCall
     public static void main(String[] args){
          try
               Runtime.getRuntime().exec("java -version");
               Runtime.getRuntime().exec("cmd /c java HelloWorld "); // here start will create a new process..
               System.out.println("Never mind abt the bach file execution...");
          catch(Exception ex)
               System.out.println("Exception occured: " + ex);
} [2]. sub 1 program
package abc;
import java.util.*;
import java.io.*;
class HelloWorld
     public static void main(String[] args){
     System.out.println("Hellow World");
} [3]. Sub 2 program:
package abc;
import java.util.*;
import java.io.*;
class HappyHoliday
     public static void main(String[] args){
     System.out.println("Happy Holiday!!");
} When I run, I got following:
Never mind abt the bach file execution...
I cannot see both Java version and Hellow World print, what is wrong??
I use eclipse3.2
Thanks a lot..

sunnymanman wrote:
Thanks,
But How can I see both programs printout
"Happy Holiday"
and
"Hello World"
??First of all, you're not even calling the Happy Holiday one. If you want it to do something, you have to invoke it.
And by the way, in your comments, you mention that in one case, a new process is created. Actually, new processes are created each time you call Runtime.exec.
Anyway, if you want the output from the processes, you read it using getInputStream from the Process class. In fact, you really should read that stream anyway (read that URL I sent you to find out why).
If you want to print that output to the screen, then do so as you'd print anything to the screen.
in notepad HelloWorld.java, I can see it is opened,
but in Java, not.I have no idea what you're saying here. It's not relevant whether a source code file is opened in Notepad, when running a program.

How can I run the report for different input values at the same time?

Reports version: Report Builder 6.0.8.13.1
Oracle version: Oracle8i Enterprise Edition Release 8.1.7.0.0
I want to run the same report for different input parameter values and spool each o/p to different file and ftp to a server. For this, as a first step, I am spooling different input values in to a file, reading those values through a loop and calling the report for that input values. Each report run/execution is taking 15 minutes. Total report execution is taking approximately 4 hours (assuming 16 different input values) to complete. So I have to wait 4 hours to see ALL outputs.
I would like to run the report parallel for ALL the input values and I should be able to see the ALL outputs with in 15 or 16 minutes.
In my shell script, I added & symbol at the end of the report call to start/run the job in the background. Due to this the control passed to the next step after the report call. At this place I have an ftp command to send the output file to a different server and it is giving error some thing like o/p file is not available/created yet". This is due to the fact that report writer is NOT yet completely started/initiated or it is NOT completed the spooling.
How can I run the report at the same time for all the input values and save the time?
Thanks in advance.
Kishore.

Increase the number of server engines running right now it seems there is only one engine running ,increase it to 4 or 6
and then atleast 4 or 6 reports will run simultaneously.
For FTPing the output add to your sript to check whether it is locked and if not then only try to ftp .
Also for more better functionality read the document (chapter 15 ) for 10g reports for its new fuinctionality.
http://download.oracle.com/docs/cd/B14099_17/bi.1012/b14048/toc.htm
Thanks
Subodh

How can i run a java class file from shell?

Hi all,
I've a .class file named "File" that contains Main method, it is in the package "File2".
How can I run it by shell command?
PS: "java -cp . file" doesn't work it launch->
Exception in thread "main" java.lang.NoClassDefFoundError: File2/File (wrong name: File2/File)
Thanks in advance.

Just to understand: is File2 ar jar archive or not? If it is a jar archive, have you tried open File2.jar? If File2 is a directory within the current directory, have you tried java -cp . File2/File? I just tested with a set of classes and it works... Let me be precise:
* Let us imagine you are working in a directory whole path is PathToDir/
* in this directory you have the classes put in a directory called File2
* in order to launch File.class then you would have to invoke :
cd PathToDir/ (just to be sure)
java -cp . File2/File
*if you were to do the following then you would have the problem you describe
cd PathToDir/File2/
java -cp . File

How can i run a jar file as EXE on mouse click..

*{color:#0000ff}how can i run a jar file as EXE on mouse click..is it possible in any way?????????{color}*

amrit_j2ee wrote:
*{color:#0000ff}how can i run a jar file as EXE on mouse click..is it possible in any way?????????{color}*Do you mean converting it from a jar file to an EXE file or do you mean that you would like to run the application by just double clicking it?
If it's the latter then you need to make the jar file including a manifest.
The manifest can be just a txt file with its content to be something like this:
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.7.1
Created-By: Somebody
Main-Class: NameOfTheMainClass
Class-Path:
X-COMMENT: Main-Class will be added automatically by buildTo make the jar file including the manifest, use something like this in your command prompt (of course you must have compiled your java file(s) first):
jar cfm test.jar MANIFEST.txt NameOfTheMainClass.classAfter that you'd be able to run your application just by double clicking it.
If you're a NetBeans user, you can build your standalone application by right-clicking your project and then going to properties => run => and choosing a Main class. After that right click on that project and "Clean and Build", locate the jar file in the "dist" folder and double click it =]
Hope it helps,
LD

How can I run a SQL script file...

How can I run a SQL script file from a location on my computer without providing the whole path?
Is there some way I can set a "Working folder" in SQL Plus??
Thanks!
Tom

You can create an environment variable called "SQLPATH" which is a list of directories that SQL*Plus will search for your .SQL
scripts.
I would like to use another directory than the oracle/bin...
How can I do this ??
Hello,
U can do this by this way:
Save odm_script.sql file to the default Oracle
directory i.e. Oracle-Home/bin and Run following command
through SQL Plus.
SQL>@Script_Name
I hope this will resolve ur problem.
Regards,
Omer Saeed Khan.

Help:How can I run the J2EE Client Application? Thanks

Help:How can I run the J2EE Client Application that will access the remote J2EE1.4 application server which runs on another host computer?
I have developped a stateles senterprise java bean name converter and deloyed it in the j2ee1.4 application server on the host machine A. The converterbean provides the remote home interface and remote interface. At the same time I have developped the j2ee application client named convertappclient. When I access the conveter bean at host computer A through the script 'appclient.bat' as 'appclient -client convertappclient.jar', the client can access the bean sucessfully. Now I want to access the bean through the script 'appclient.bat' at host computer B,what files should I copy from host computer A to host computer B;and what the command line should be like? Thanks!
The following are the code of the enterprise java bean and it's home interface .
The client code is also provided.
The enterprise java bean:
package converter;
import java.rmi.RemoteException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
import java.math.*;
public class ConverterBean implements SessionBean {
BigDecimal yenRate = new BigDecimal("121.6000");
BigDecimal euroRate = new BigDecimal("0.0077");
public ConverterBean() {
public BigDecimal dollarToYen(BigDecimal dollars) {
BigDecimal result = dollars.multiply(yenRate);
return result.setScale(2, BigDecimal.ROUND_UP);
public BigDecimal yenToEuro(BigDecimal yen) {
BigDecimal result = yen.multiply(euroRate);
return result.setScale(2, BigDecimal.ROUND_UP);
public void ejbCreate() {
public void ejbRemove() {
public void ejbActivate() {
public void ejbPassivate() {
public void setSessionContext(SessionContext sc) {
The bean's remote home interface :
package converter;
import java.rmi.RemoteException;
import javax.ejb.CreateException;
import javax.ejb.EJBHome;
public interface ConverterHome extends EJBHome {
Converter create() throws RemoteException, CreateException;
The bean's remote interface:
package converter;
import javax.ejb.EJBObject;
import java.rmi.RemoteException;
import java.math.*;
public interface Converter extends EJBObject {
public BigDecimal dollarToYen(BigDecimal dollars) throws RemoteException;
public BigDecimal yenToEuro(BigDecimal yen) throws RemoteException;
The j2ee application client:
import converter.Converter;
import converter.ConverterHome;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
import java.math.BigDecimal;
public class ConverterClient {
public static void main(String[] args) {
try {
Context initial = new InitialContext();
System.setProperty("java.naming.factory.initial","org.jnp.interfaces.NamingContextFactory");
System.setProperty("java.naming.provider.url","jnp://10.144.97.250:3700");
Context myEnv = (Context) initial.lookup("java:comp/env");
Object objref = myEnv.lookup("ejb/SimpleConverter");
ConverterHome home =
(ConverterHome) PortableRemoteObject.narrow(objref,
ConverterHome.class);
Converter currencyConverter = home.create();
BigDecimal param = new BigDecimal("100.00");
BigDecimal amount = currencyConverter.dollarToYen(param);
System.out.println(amount);
amount = currencyConverter.yenToEuro(param);
System.out.println(amount);
System.exit(0);
} catch (Exception ex) {
System.err.println("Caught an unexpected exception!");
ex.printStackTrace();
}

Surprisingly I find an upsurge in the number of posts with this same problem. I recently found a post which gave a nice link for this. Follow the steps and it should help:
http://docs.sun.com/source/819-0079/dgacc.html#wp1022105

How can I run other application?

Hello everyone!
I have few questions, for example I use this to run other application:
Runtime.getRuntime().exec("C\\Program Files\\Opera\\Opera.exe");1. It works, but how can I run Opera.exe, when I don't know where was install Opera?
2. I want open URL, but I don't care what browser will be use. How do this?
p.s.
I hope, you will understand my English =)

In Windows, to open a URL in the default browser you simply use the START command, like this:START http://www.canadiantire.ca/Try that at the command line. You can use Runtime.exec() to do this, as has been discussed in several hundred earlier posts in this forum.

Help! I can't run javac............

I just install WinME for my pc! However, the method to set path in WinME is different with Win98! I set the path in Win98 by using 'sysedit', however, WinME haven't got 'sysedit', then i tried to set path in 'msconfig'! But, it only allows us to set one path, how should i add one more paths?
i can't run javac, it said msvcrt.dll has problem!
what happen?
I can set path in Win98 but winME is different.
thank you

Windows ME - To set the PATH permanently:
From the start menu, choose programs, accessories, system tools, and system information. This brings up a window titled "Microsoft Help and Support". From here, choose the tools menu, then select the system configuration utility. Click the environment tab, select PATH and press the edit button. Now add the SDK ( e.g C:\j2sdk1.4.0-beta3\bin)to your path by Looking 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.
After you've added the location of the SDK to your PATH, save the changes and reboot your machine when prompted.
hope this help

How Can One Run Only In The System Administrator ( ie root ) ?

Upon creating a System Administrator ( ie root ) in Command + R , of course after Clean Installing OS X ML with my own specific Apple Verified Account ,
i have the Log In screen from a startup , either Safe Boot or a Boot , and i have my own specifc Apple Verified Account , plus the Other... ,
which the Other... of course is the System Administrator ( ie root ) .
How Can One Run Only In The System Administrator ( ie root ) ?
Is there a way in Terminal with sudo su to make it work ?
Shall i just always log in with Other... System Administrator ( ie root ) , and just forget the my own specific Apple Verified Account ?

As of EHP3, you could still install some EHP components. On an ERP 6.00, you could just push SAP_APP to 6.03 and move on. Now if you want another component in your system with an EHP4 version, you can't have some components at EHP3 and some at EHP4. You would install EHP4 for the new component you desire updated and part of the work will be to also update SAP_APP to 6.04.
EHP4 is an UPGRADE process, with shadow instance & all the joy of an upgrade process. You can either run ressource minimized or downtime minimized. In resource minimized, the shadow instance runs on the same server as the main instance. Downtime minimized allow to run the shadow instance on a separate / new server. Anyway you go, you will always have a "Downtime Phase" when you bring back the updated components from the shadow instance toward the real production one.
As with any UPGRADE project, the benefits of installing EHP4 for your business has to weighted against the downtime cost.
Our tests so far on small systems (few data, few users, 120GB database) show ~3 days process from EHP3 to EHP4 (all components) with a downtime phase of about 22 hours using the "resource minimized" path, i.e. shadow & main instance on the same server (4 CPUs, 16GB RAM). Until you give a try at your Sandbox or DEV systems, you won't have realistic figures for your environment.
Good luck!

How can i run unix script from my apex page

how can i run unix script from my apex page and take the output of unix script as a hidden variable and display it on the report region of that page

I had a requirement to run a Fortran program against some data that woudl be extracted from the database after the user set up their filtering criteria and made some additional input. SInce the program was to complex to conver to PL/SQL, we decided to try and invoke it from Apex. This is how I did it.
1. I followed the steps in Tim Archer's excellent article "Oracle External Procedure to Run Host Commands" (http://www.timarcher.com/?q=node/9). If the link does nto work, google the article's title.
Using this steps I created a function which accepts any OS command, including calling my own shell scripts, and runs them. I called my PL/SQL function "shell" instead of "USF_RUN_HOST_CMD " as Tim did in his example (step 9).
2. In Apex,
a. I created a button to run my shell command. (I named it P2_RUN_SHELL)
b. I created a PL/SQL process whose source looks as follows:
shell('/home/ackness/scripts/cr_xcf_file.sh > /tmp/cr_scfp_file.log');
and which was conditioned on the the button P2_RUN_SHELL.
It works like a charm.
Note: since you can run your own scripts using this method, you can encapsulate a series of commands in a UNIX shell script and invoke that script from Apex. This allows you to be able to test or run you commands from the command line as well as Apex and makes it easier to develop/debug/enhance the scripts in the future.
Ackness

How can i run javac command in a Servlet?

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