Java program to run a C compiled file in SHELL unix

hi,
i have two queries,
1) i have a c program which i compile to get a new file,{a exe file i suppose}, i need to execute it for 2000 times. for that i need to write a java program which can run the file in SHELL unix.
can you suggest me how to write,
2) also my file name starts with 0001.mnp to 1989.mnp, how to get 0001 as a number and during increment it should generate as 0002 ..0038 and so on. till 1989.
the above java program which am goin to write should just take file 0001.mnp and convert it into 0001.bns,
and get incremented automatically till the file 1989.

hi,
i have two queries,
1) i have a c program which i compile to get a new
file,{a exe file i suppose}, i need to execute it for
2000 times. for that i need to write a java program
which can run the file in SHELL unix.
can you suggest me how to write,Read this: http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html
However, you could do this all in a shell script.
>
2) also my file name starts with 0001.mnp to
1989.mnp, how to get 0001 as a number and during
increment it should generate as 0002 ..0038 and so
on. till 1989.
the above java program which am goin to write should
just take file 0001.mnp and convert it into
0001.bns,
and get incremented automatically till the file 1989.A loop? What are you having difficulty with?
Again, this could all be done in a shell script.

Similar Messages

Can a java program be run in the background?

Hi all,
Can a java program be run in the background without the user being aware of it? I need to make a program that continuosly monitors a pc at regular intervals and runs at all time. It should be hidden(shouldn't display on the screen while running) from the user, and also, can it be run as a system file so that even if a user checks he/she would think of it as a system file?

I'm the administrator of all the computers. Then as I said there are commercial applications that do that.
Presumably you expect a problem now. And implementing an acceptable solution is going to take you months. Because not only need to 'hide' the application, you also need to set up all the monitoring and logging capability. And the first will require quite a bit of JNI work along with testing (in particular as it could interfer with existing applications on the users computers.)
I need to
install the software in all the machines and i want
that the users who use the machine should not be able
to close the program through the task manager. If the users have admin rights then they can terminate a windows service.
And if they don't have admin rights then you can simply turn off the ability to install anything.
I want
to know what the resources of the computers are and
that if anyone has added a resource to it or
not(attaching a flash usb thumbdrive etc). Lots of JNI.

Run a java program by double-click on desktop file

hi guys,
i need ur help!!!!!!! i'm tryin to code a program, where i double click on any file type and my coded java program should start running. my coded program should check for th particular in network,if the particular application is not in harddisk......
(eg
double-click on s.pdf file coded java program should start running and search should check for acrobat reader
in network)
pls send a sample code asap!!!!!

Did you started any coding on this or just looking for
a complete solution from the memebers of JDC??i think you've got it...
could you please stop posting this message
http://forums.java.sun.com/thread.jsp?thread=207687&forum=4&message=705223
http://forums.java.sun.com/thread.jsp?thread=207185&forum=4&message=702579
http://forums.java.sun.com/thread.jsp?thread=207950&forum=4&message=706537
plus this one
and all the old posts about opening files including this one...
http://forums.java.sun.com/thread.jsp?thread=206532&forum=4&message=699027
maybe you should try and actually write some code on your own...

Java program not running by the Ant

i have a small java program.
its a classpath problem.
cant figure out where is the problem.
i am running the code via Ant.
build.xml
<?xml version="1.0"?>
<project name="myproject" basedir="." default="all">
    <property name="src.dir"     value="src"/>
     <property name="classes.dir" value="classes"/>
     <property name="lib.dir"     value="C:/tomcat/webapps/axis/WEB-INF/lib"/>
     <property name="runclass" value="TestClient"/>
     <target name="all" depends="clean,compile"/>
     <target name="clean">
        <delete dir="${classes.dir}"/>
    </target>
    <path id="classpath">
        <fileset dir="${lib.dir}" includes="**/*.jar"/>
    </path>
    <target name="compile">
        <mkdir dir="${classes.dir}"/>
     <javac srcdir="${src.dir}"
      destdir="${classes.dir}"
      deprecation="on"
      debug="on">
   <classpath><path refid="classpath"/></classpath>
</javac>
     </target>
     <target name="run" depends="compile">
   
   <java classname="${runclass}">
        <classpath>
          <pathelement path="${classpath}"/>
          <fileset dir="${lib.dir}">
            <include name="**/*.jar"/>
        </fileset>
          </classpath>
       </java>
</target>
     </project>i invoked
ant runand got this
Buildfile: build.xml
compile:
run:
     [java] Could not find TestClient. Make sure you have it in your classpath
     [java]     at org.apache.tools.ant.taskdefs.ExecuteJava.execute(ExecuteJava
.java:170)
     [java]     at org.apache.tools.ant.taskdefs.Java.run(Java.java:710)
     [java]     at org.apache.tools.ant.taskdefs.Java.executeJava(Java.java:178)
     [java]     at org.apache.tools.ant.taskdefs.Java.execute(Java.java:84)
     [java]     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.ja
va:275)
     [java]     at org.apache.tools.ant.Task.perform(Task.java:364)
     [java]     at org.apache.tools.ant.Target.execute(Target.java:341)
     [java]     at org.apache.tools.ant.Target.performTasks(Target.java:369)
     [java]     at org.apache.tools.ant.Project.executeSortedTargets(Project.jav
a:1216)
     [java]     at org.apache.tools.ant.Project.executeTarget(Project.java:1185)
     [java]     at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(De
faultExecutor.java:40)
     [java]     at org.apache.tools.ant.Project.executeTargets(Project.java:1068
     [java]     at org.apache.tools.ant.Main.runBuild(Main.java:668)
     [java]     at org.apache.tools.ant.Main.startAnt(Main.java:187)
     [java]     at org.apache.tools.ant.launch.Launcher.run(Launcher.java:246)
     [java]     at org.apache.tools.ant.launch.Launcher.main(Launcher.java:67)
BUILD SUCCESSFUL
Total time: 2 secondsso, code is not running......its dfinitely a classpath problem , because error message says "Could not find TestClient. Make sure you have it in your classpat".
TestClient is the name of main class file.
not sure whats wrong with this build.xml ? whats wrong in it ?
one thing , i guess, i did not mention "." , current directory in the build.xml ......is it because of that ?
i browsed apache manual......To Run a Java program.....first, they are making a JAR file ...and then they are executing the JAR.
i really, dont need the JAR file......i just want to run it.....thats enough.
somewhere, i have to do some modification in this buld.xml.......do you have any idea ?
thank you

TestClient folder has
1)src
2)classes
3)build.xml
i have posted the build.xml already.
now, src folder has TestClient.java
TestClient.java
==================
import org.apache.axis.client.Call;
import org.apache.axis.client.Service;
import javax.xml.namespace.QName;
public class TestClient {
   public static void main(String [] args) {
     try {
       String endpoint =
           "http://ws.apache.org:5049/axis/services/echo";
       Service service = new Service();
       Call     call    = (Call) service.createCall();
       call.setTargetEndpointAddress( new java.net.URL(endpoint) );
       call.setOperationName(new QName("http://soapinterop.org/","echoString"));
       String ret = (String) call.invoke( new Object[] { "Hello!" } );
       System.out.println("Sent 'Hello!', got '" + ret + "'");
     } catch (Exception e) {
       System.err.println(e.toString());
}and i did
ant runand i got those errors.
clearly, its not able to run it.
looked the manual....did not find anything special about java task....still not working.

Java Program Not Running

Hi,
I have a small Java program that imports Oracle.sql.* and Oracle.jdbc.*.
It establishes a default connection and converts a String[ ] to Oracle.sql.ARRAY type.
As per Oracle documentation, I have added paths of required .zip files in CLASSPATH variable.
Though I am able to compile the code, but when I try to run it thru java, it gives me error:
Exception in Thread "main" java.lang.NoClassDefFoundError: TestInstallJDBC
The .java and .class files are in current directory and I'm using
java TestInstallJDBC.
What can be the problem?
Any help is appreciated.
Thanks

Ah, I re-read your first post - you said you added paths to the Classpath. So you need to add . to your Classpath as well. For Windows .;<existing_classpath> or for Unix .:<existing_classpath>

How to find that a java program is running for the first time on daily basi

it is like this
1. i will ran a java program every day and i have to find that it is running for the first time(as i may stop that program and may run again the same day )
Pls share ur ideas

san.kumar wrote:
it is like this
1. i will ran a java program every day and i have to find that it is running for the first time(as i may stop that program and may run again the same day )
Pls share ur ideasAs kajbj said - you need to store a token / file with a run date on the file system. Each time the application runs, have it compare with the date from this file with the current date. If different, it's the first run of the day. If not, it is not the first run of the day. Each time have it update the date on the file.

Getting java program to run (really basic)

Hi,
I'm used to running java programs through the programs I write with, like Eclipse, but now I'm trying to run a program on a compuyer without those things and I'm stuck.
I'm running Windows XP and have downloaded the SDK Version 1.4.2, The java.com website says I have the latest software, everything is up to date.
All the sites I see say that the way to run a program is to use the 'javac' command from the command prompt. However, doing this (with or without a file name appended) gives me the error: 'javac is not recognized as an internal or external command, operatable program or batch file.'
What do I need to do to run a simple java program from a bunch of .java files?
Help much appreciated, thanks.

All which instuructions?
1. I've followed all the instructions at 'Installation Instructions', http://www.java.com/en/download/help/5000010300.xml. They have instructions to
.A: Download and Install: All done.
.B: Enable and Configure: They say it only relates to browsers and applets
.C: Test installation: Test comes out positive.
2. The files that were downloaded: Contain no instructions
3. All the 'Enable' instructions found here: http://www.java.com/en/download/help/index_configuration.xml
These relate to:
.A:Switching between Microsoft VM and JRE
.B:Enabling JRE for browsers and Applets
.C: Clearing the cache
.D: Viewing the console,
etc etc. None of them seem to be about setting a path.
Can you tell me which instructions you mean?
Thanks

A Java program that runs automatically at a given time of day

Okay Iam at the ending stages of a Java Assignment that is a MySql database, Hibernate for Mapping with a Java Server Faces front-end. All I need to do now is send emails at set time every week. Normally I know what to search for but frankly Iam stumped. Iam really just looking for a starting point for something that can run a Java Program at a set time of the week. PS my OS is Ubuntu if that is relevant but I was hoping for something that isn't platform specific so that it is portable.
Cheers in advance.

You can use the possibilities of your operating system, in this case Ubuntu.
Just drop a shell script that runs your java program in the /etc/cron.weekly directory.
--janeiros

Java Program to run an https based url

This is the simple code to read through a java program from a simple http based procot URL
import java.net.*;
import java.io.*;
public class URLReader {
public static void main(String[] args) throws Exception {
     URL yahoo = new URL("http://mail.yahoo.com/");
     BufferedReader in = new BufferedReader(
                    new InputStreamReader(
                    yahoo.openStream()));
     String inputLine;
     while ((inputLine = in.readLine()) != null)
     System.out.println(inputLine);
     in.close();
But if i use the url https://mail.yahoo.com/ instead of http://mail.yahoo.com/ then i have an exception given below
Exception in thread "main" java.io.IOException: HTTPS hostname wrong: should be
<mail.yahoo.com>
at sun.net.www.protocol.https.HttpsClient.b(DashoA12275)
at sun.net.www.protocol.https.HttpsClient.afterConnect(DashoA12275)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect
(DashoA12275)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLCon
nection.java:626)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Dash
oA12275)
at java.net.URL.openStream(URL.java:913)
at URLReader.main(URLReader.java:7)
Now i want this program based on https to run. SO can anybody help me running the same program by using https? Or can anybody give me the code to run a url based on https protocol?

Same as http://forum.java.sun.com/thread.jspa?threadID=677398&tstart=0 . Check reply on the other post.

Java won't run / can't find file

i'm new to using java so any help is usefull
the files are in the same directory, they are all named correctly. do i have to compile the java class file first or can i just point to it using a html as i am doing?
this is the error message:
load: class Scribble.class not found.
java.lang.ClassNotFoundException: java.io.FileNotFoundException: C:\JAVA\Scribble\class.class (The system cannot find the path specified)
i see the CLASS.CLASS at the end but thats not the path the file is located in. its making its own path

You're probably giving a class file name where a class name is expected.
So if you say "Scribble.class" (a file name) in a place where a class name is needed, then the JVM will look for the class file, which (given that class name) would be "class.class" in a package named "Scribble".
Try removing the ".class" and try again.

My java program can't read the EXCEL file generated by BI Publisher

I have a program that generates excel file and another program that reads the previously generated file.
I'm getting this error when my code reads the file using the "HSSFWorkbook" object:
Exception in thread "main" java.io.IOException: Invalid header signature; read 3271134372600964429, expected -2226271756974174256
     at org.apache.poi.poifs.storage.HeaderBlockReader.<init>(HeaderBlockReader.java:112)
     at org.apache.poi.poifs.filesystem.POIFSFileSystem.<init>(POIFSFileSystem.java:151)
     at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:298)
Edited by: user1900500 on Mar 11, 2011 3:37 PM

If you're using JDK 5 or later, you could use the Scanner class for input information. See below:
try {
               Scanner reader = new Scanner(new File("C:\\boot.ini"));
               StringBuilder sb = new StringBuilder();
               while (reader.hasNextLine()) {
                    sb.append(reader.nextLine());
                    sb.append(System.getProperty("line.separator"));
               System.out.println(sb.toString());
          } catch (FileNotFoundException e) {
               e.printStackTrace();
          }

Java program stopped running when using JVMPI

Hi!
I'm writting a very simple profiler using JVMPI. I intended to pause/continue it by sending signal, like kill -SIGUSR2 PID, to it, but whenever I did this, the java program that ran with the profiler stopped running, however the profiler kept running properly.
Here's the code of the simple profiler and the testing java program.
//myprofiler.cc
#include <jvmpi.h>
#include <pthread.h>
#include <stdio.h>
#include <signal.h>
void sig_handler_pause(int);
static JVMPI_Interface *jvmpi_interface;
void notifyEvent(JVMPI_Event *event) {
switch(event->event_type) {
case JVMPI_EVENT_CLASS_LOAD:
fprintf(stderr, "myprofiler> Class Load : %s\n", event->u.class_load.class_name);
break;
case JVMPI_EVENT_OBJECT_ALLOC:
fprintf(stderr, "myprofiler>object alloc \n");
break;
extern "C" {
JNIEXPORT jint JNICALL JVM_OnLoad(JavaVM jvm, char options, void *reserved) {
fprintf(stderr, "myprofiler> initializing ..... \n");
// get jvmpi interface pointer
if ((jvm->GetEnv((void **)&jvmpi_interface, JVMPI_VERSION_1)) < 0) {
fprintf(stderr, "myprofiler> error in obtaining jvmpi interface pointer\n");
return JNI_ERR;
// initialize jvmpi interface
jvmpi_interface->NotifyEvent = notifyEvent;
// enabling class load event notification
jvmpi_interface->EnableEvent(JVMPI_EVENT_CLASS_LOAD, NULL);
fprintf(stderr, "myprofiler> .... ok \n\n");
signal(SIGUSR2,sig_handler_pause);
return JNI_OK;
void start(){
          fprintf(stderr,"start...\n");
     jvmpi_interface->EnableEvent(JVMPI_EVENT_OBJECT_ALLOC, NULL);
jvmpi_interface->EnableEvent(JVMPI_EVENT_CLASS_LOAD,NULL);
void pause(){
          fprintf(stderr,"pause...\n");
          jvmpi_interface->DisableEvent(JVMPI_EVENT_OBJECT_ALLOC, NULL);
jvmpi_interface->DisableEvent(JVMPI_EVENT_CLASS_LOAD,NULL);
int status=0;
void sig_handler_pause(int sig){
     if(status == 0){
          start();
          status = 1;
     else if(status == 1){
          pause();
          status = 0;
//Test.java
public class Test {
public static void main(String[] args) {
     try {
                    int i = 0;
while(true)
                         Thread.sleep(1000);
                    System.out.println(i++);
          catch (Exception e) {
                    e.printStackTrace();
Here're some notes:
1)If I didn't call
jvmpi_interface->EnableEvent(JVMPI_EVENT_OBJECT_ALLOC, NULL);
in "start()" function, the java program Test ran properly after I sent signal to the process by using kill command in an command line;
or
2) If I delete "Thread.sleep(1000)" in Test.java, then whether I call
jvmpi_interface->EnableEvent(JVMPI_EVENT_OBJECT_ALLOC, NULL);
in "start()" or not, the Test program ran properly after I sent signal to the process.
It seems to be a thread dead lock, but I'm not sure. Can any body help?Thanks very much.

I should strongly recommend moving from JVMPI to JVM TI if you can. The reason is that JVMPI has been deprecated since 5.0 and can not be used with Java SE 6 and newer.
Anyway, the issue you have may be due to the signal you are using. I'm not sure which operating system this is but on Linux the USR2 signal is used for the suspend/resume implementation. Have you looked at the Troubleshooting Guide or the Signal Chaining page for details on how signals are used and how to chain handlers? Another idea is to remove the signal handling code implementation and to use the data dump event. This is supported by both JVMPI and JVM TI so that you get an event (via the QUIT signal).

Sample JAVA program: generate PDF from xsf:fo File

Hi everybody,
we already have an xsl that converts an xml into an xsl:fo file.
I am now looking for a very simple sample that converts this xsl:fo into a PDF.
It would be profitable if the java-sample would read the xsl:fo file as an input-stream.
Thanks
Regards
Mario

Hi,
as I am not a JAVA expert.
Do you know how to reuse the generated PDF in the java sample not as a fileOutputStream.
I need to attach the generated PDF to a mail-xml-document.
(I know haw to generate a mail structure in java-mappping)
What kind of object is the generated PDF within the java?
Any ideas
Regards Mario

Calling an unix command from a java program which runs on windows

Hello All
I have an Java Application which is run on windows server (I)
I have another Sun Server (II)
I want to call an unix command on server(II) from java application which is on server(I)
I am using Samba Server in order to share files between Windows Server and Unix Server
Can I use samba in order to call command
or is there any way to open an telnet session within java application
I will be grateful if you give me some suggestion on this issue
Regards
BEKIR BALCIK
J2EE Application Developer
Argela Technologies ...

cross post
http://forum.java.sun.com/thread.jspa?threadID=624601&messageID=3553626#3553626

Java script in HTMLDB to check if file exists in Unix file system

How do I use javascript to check if file is exists in Unix file system. I would like to dispaly the columns only if file is exists.

Hello,
This is one of those features that the manuals do not cover.
How to use and build AJAX features could be a whole book all by itself, and it's not really HTML DB specific feature even though we have built some hooks in application and javascript to make it easier.
Take a look at this thread
Netflix: Nice UI ideas
and I've built some examples here
http://htmldb.oracle.com/pls/otn/f?p=11933:11
Or just search the forums for AJAX or XMLHTTP
Carl

Java program to run a C compiled file in SHELL unix

Similar Messages

Maybe you are looking for