DOS from Java Program
How does one execute/call DOS shell commands from within Java programs?
check on my example from here
http://forum.java.sun.com/thread.jspa?threadID=523746&tstart=25
Similar Messages
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Capture error and outputstream of DOS from java program.
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I'm facing following problem:
1. I have a Java program which calls other java program.
2. I call the other java program by:
---> I run the batch file.
Process proc =Runtime.getRuntime().exec(batchFile);
---> This batch file calls the java program.
Now In my main application that is main java program I'm capturing error and output stream of DOS command
line so that it will be displayed by my swing application.
proc.getInputStream() and proc.getErrorStream().
But I'm not able to capture the error stream
If I don't capture the streams and run command window it will display error as
well as o/p on command window.
I'm not getting what is going wrong over here.
Thanks in advance.
Leehttp://forums.sun.com/thread.jspa?threadID=5392079&messageID=10739096#10739096
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Problem while running dos command from java program
Dear friends,
I need to terminate a running jar file from my java program which is running in the windows os.
For that i have an dos command to find process id of java program and kill by using tskill command.
Command to find process id is,
wmic /output:ProcessList.txt process where "name='java.exe'" get commandline,processid
This command gives the ProcessList.txt file and it contains the processid. I have to read this file to find the processid.
when i execute this command in dos prompt, it gives the processid in the ProcessList.txt file. But when i execute the same command in java program it keeps running mode only.
Code to run this command is,
public class KillProcess {
public static void main(String args[]) {
KillProcess kProcess = new KillProcess();
kProcess.getRunningProcess();
kProcess = new KillProcess();
kProcess.readProcessFile();
public void getRunningProcess() {
String cmd = "wmic /output:ProcessList.txt process where \"name='java.exe'\" get commandline,processid";
try {
Runtime run = Runtime.getRuntime();
Process process = run.exec(cmd);
int i = process.waitFor();
String s = null;
if(i==0) {
BufferedReader stdInput = new BufferedReader(new
InputStreamReader(process.getInputStream()));
while ((s = stdInput.readLine()) != null) {
System.out.println("--> "+s);
} else {
BufferedReader stdError = new BufferedReader(new
InputStreamReader(process.getErrorStream()));
while ((s = stdError.readLine()) != null) {
System.out.println("====> "+ s);
System.out.println("Running process End....");
} catch(Exception e) {
e.printStackTrace();
public String readProcessFile() {
System.out.println("Read Process File...");
File file = null;
FileInputStream fis = null;
BufferedReader br = null;
String pixieLoc = "";
try {
file = new File("ProcessList.txt");
if (file.exists() && file.length() > 0) {
fis = new FileInputStream(file);
br = new BufferedReader(new InputStreamReader(fis, "UTF-16"));
String line;
while((line = br.readLine()) != null) {
System.out.println(line);
} else {
System.out.println("No such file");
} catch (Exception e) {
e.printStackTrace();
return pixieLoc;
} when i remove the process.waitFor(), then while reading the ProcessList.txt file, it says "No such file".
if i give process.waitFor(), then it's in running mode and program is not completed.
Colud anyone please tell me how to handle this situation?
or Is there anyother way to kill the one running process in windows from java program?
Thanks in advance,
SathishHi masijade,
The modified code is,
class StreamGobbler extends Thread
InputStream is;
String type;
StreamGobbler(InputStream is, String type)
this.is = is;
this.type = type;
public void run()
try
InputStreamReader isr = new InputStreamReader(is, "UTF-16");
BufferedReader br = new BufferedReader(isr);
String line=null;
while ( (line = br.readLine()) != null)
System.out.println(type + ">" + line);
} catch (IOException ioe)
ioe.printStackTrace();
public class GoodWindowsExec
public static void main(String args[])
try
String osName = System.getProperty("os.name" );
String[] cmd = new String[3];
if( osName.equals( "Windows 95" ) )
cmd[0] = "command.com" ;
cmd[1] = "/C" ;
cmd[2] = "wmic process where \"name='java.exe'\" get commandline,processid";
} else {
cmd[0] = "cmd.exe" ;
cmd[1] = "/C" ;
cmd[2] = "wmic process where \"name='java.exe'\" get commandline,processid";
Runtime rt = Runtime.getRuntime();
System.out.println("Execing " + cmd[0] + " " + cmd[1]
+ " " + cmd[2]);
Process proc = rt.exec(cmd);
System.out.println("Executing.......");
// any error message?
StreamGobbler errorGobbler = new
StreamGobbler(proc.getErrorStream(), "ERROR");
// any output?
StreamGobbler outputGobbler = new
StreamGobbler(proc.getInputStream(), "OUTPUT");
// kick them off
errorGobbler.start();
outputGobbler.start();
// any error???
int exitVal = proc.waitFor();
System.out.println("ExitValue: " + exitVal);
} catch (Throwable t)
t.printStackTrace();
}when i execute the above code, i got output as,
Execing cmd.exe /C wmic process where "name='java.exe'" get commandline,processid
and keeps in running mode only.
If i execute the same command in dos prompt,
CommandLine
ProcessId
java -classpath ./../lib/StartApp.jar;./../lib; com.abc.middle.startapp.StartAPP 2468
If i modify the command as,
cmd.exe /C wmic process where "name='java.exe'" get commandline,processid > 123.txt
and keeps in running mode only.
If i open the file when program in running mode, no contents in that file.
If i terminte the program and if i open the file, then i find the processid in that file.
Can you help me to solve this issue? -
How to edit the existing data in the XML file from java programming.
Hi all
i am able to create XML file with the sample data as below from java programming.
i need sample code on how to edit the existing data in the XML file?
for example
<?xml version="1.0"?>
<mydata>
<data1>
<key1>467</key1>
<name1>Paul</name1>
<id1>123</id1>
</data1>
<data2>
<key2>467</key2>
<name2>Paul</name2>
<id2>123</id2>
</data2>
</mydata>
i am able to insert the data in the XML.
now i need sample code on how to modify the data in the above XML file from the java programming for only key2,name2,id2 tags only. the remaining tags data in the XML file i want to keep same data except for key2,name2,id2 which are i want to modify from java code
Regards
Sunil
[points will be always rewardable]hi
u need a parser or validate the xml file for to read the xml file from java coding u need for this
xml4j.jar u can download this file from here
http://www.alphaworks.ibm.com/tech/xml4j
or we can use the SAX(simple API for XML)
some sample applications for this
http://www.java-tips.org/java-se-tips/javax.xml.parsers/how-to-read-xml-file-in-java.html
http://www.developertutorials.com/tutorials/java/read-xml-file-in-java-050611/page1.html
http://www.xml-training-guide.com/e-xml44.html
let me know u need any other info
bvr -
How to access database file on CDROM from Java Programe??
Hello friends,
I am making online exam application.
I want my question database to be reside on CDROM.
but i am not getting any idea how to make DSN or static path that resolute the path that i have mentioned for CDROM.
basically i want to know how to access CDROM from Java Programe????
Thanks in advance
Navik PathakOnce you mounted the CDROM (something maybe as /media/cdrom) as a file system (or assigned a drive letter to it like D: or F: or whatever), the files are accessible normally.
-
Calling oracle SQL Loader from java program
Hi,
I want to insert data into oracle tables from a text files containing fixed length fields. I am using SQLLoader to achieve this. The requirement is to call the SQLLoader within the java program.
Does anyone know how to call SQL Loader from java program?
Thanks,
VarshaSimply "exec" the sqlldr program with the parameters you need to pass to it.
Runtime.exec (........)
Try to pass all parameters needed including the username and password, and use the option "silent" to avoid output, and the option "log" to have a log file of the modifications that sqlldr has done to the database. -
How to connect iseries green screen from java program
how to connect iseries green screen from java program to get the data in the DB files ,here the DB is DB2/400
Just some Friday fun. Use the telnet program that comes with Windows and supports VT escape sequences.
import java.io.*;
import java.net.*;
public class AutoTelnet {
private static Socket s;
public static void main(String[] args) throws Exception {
Thread t = new Thread() {
@Override public void run() {
try {
s = new ServerSocket(5555).accept();
} catch (IOException ex) {
ex.printStackTrace();
t.start();
Process p = new ProcessBuilder("cmd", "/C", "start", "telnet", "127.0.0.1", "5555").redirectErrorStream(true).start();
t.join();
PrintStream ps = new PrintStream(s.getOutputStream());
ps.println("Screen will be cleared in 5 seconds");
ps.println("5");
Thread.sleep(1000);
ps.println("4");
Thread.sleep(1000);
ps.println("3");
Thread.sleep(1000);
ps.println("2");
Thread.sleep(1000);
ps.println("1");
Thread.sleep(1000);
ps.println("\u001b[2J");
Thread.sleep(5000);
} -
How to create a file under web application root from java program
how to create a file under web application root from java program like an action class?
like an action class?Huh? What exactly is your requirement?
Creating a file is usually done with java.io API. Read the java.io tutorials how to play with files. -
How to call windows help files .hlp from Java program
Hai all everybody
How to call windows Help file that is xxx.hlp files from java programs
any help great!!!!
regards
veeruHow about
Runtime.getRuntime().exec("start xxx.hlp"); -
SOLVED: How To Use LDAP over SSL (no certs) from java program
Trying to connect to OID from Java program (using Grocery Store demo as a test). Want to use SSL with no server certificate. OID is configured, and ldapsearch -U 1 works.
Tried using URL with ldaps, or adding SECURITY_PROTOCOL,"ssl". In both case the error is 'simple bind failed'.
Samples on OTN say this should be possible, but then only have code for the non-ssl connection.
Posting from others with this same question don't seem to have been answered.
Message was edited by:
user590350
I have found that using ConnectionUtil.getSSLDirCtx() from Oracle will make a no-authentication SSL connection. An example in the sample code would be useful.Even with Java APIs, There is a way to talk through SSL without bothering about certificates. It's just that you will have to write some code and make some changes in settings.
Read following to get further information on the same.
http://kiranthakkar.blogspot.com/2007/04/dummny-certificate-authentication.html
I don't know or I won't comment whether it's the right approach or not but it's definitely a work around.
Thanking You
Kiran Thakkar -
Is it possible to execute SAPGUI scripts from java program?
Hi everyone..
I need to develop an java applications that executes the SAPGUI script or any technique that execute set of transaction as client.
Is it possible to execute SAPGUI scripts from java program? if so, how it can be achieved? is there any other technique to achieve above mention scenario?.
it will be more helpful, if docs related to that are shared..
Thanks in advanceOh, bummer. Would be much more convenient if I could just use iTunes for everything. Can't stand WMP. I wonder if WinAmp might be a good compromise?
Thanks for this answer . . .
Sharon -
Starting weblogic server from java program
Runtime r=Runtime.getRuntime();
Process p=r.exec("cmd /c d:/bea/weblogic700/server/bin/setWLSEnv.cmd");
when ihave given like this it is working.
now i want to start weblogicserver from jav program
String s="-Dweblogic.Domain=mydomain weblogic.Server"
Process p=r.exec("cmd /c d:/bea/weblogic700/server/bin/setWLSEnv.cmd java "+s);
when i gave like this weblogicserver should start with specified domain
but no output is comming.please tellme where the problem isno - nothing happened. it perform the next java code - and there is nothing else happen on the windows.
maybe i don't check in the right place for the error you are talking about?
i also tried i simple cmd file that does nothing - but still nothing...
for any other file types it works properly. -
Does somebody know whether it is possible to run some program with extension EXE from JAVA program?
Yes sombody knows. Yes it's possible. Have a look at Runtime#exec.
-
Execute ConcurrentRequest from java program
In order to execute concurrent request from java program are this 3 lines enough :
1)ConcurrentRequest concurrentrequest = new ConcurrentRequest(oadbtransaction.getJdbcConnection());
2)int i = concurrentrequest.submitRequest("some value", " some value", "some value", null, false, vector);
3)oadbtransaction.commit();
*******************************8
I am asking because while executing ConcRequest from PL/SQL I have to call a functin : fnd_global.apps_initialize(user_id ,resp_id, app_id) prior to executing FND_REQUEST.SUBMIT_REQUEST.
Is there any equivalent in java for apps_initialize?
thanks in advance.hi
u can call the FND_global using callable statement
DBTransaction txn = getDBTransaction();
CallableStatement cs =
txn.createCallableStatement("begin fnd_global.apps_initialize(:1, :2,:3);end;");
try
cs.setString(1, getOADBTransaction().getUserId() );
cs.setString(2, getOADBTransaction().responsibilityId());
cs.setString(3, getOADBTransaction().getApplicationID());
cs.execute();
cs.close();
catch (SQLException sqle)
try { cs.close } catch (Exception(e) {}
throw OAException.wrapperException(sqle);
thanx
Pratap -
Downloading unix archive file (.Z extension) from java program
Hi,
I am trying to download unix archive files with .Z extension from java program. When I use
BufferedReader zReader = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
and then read line by line and write it to file, downloaded file can't be decompressed. I tried to open it with winZip which supports .Z files but I get the message : Cannot open file, it does not appear to be a valid archive.
How can I download file correctly?
Any help would be appreciated.Hi,
I am trying to download unix archive files with .Z
extension from java program. When I use
BufferedReader zReader = new BufferedReader(new
InputStreamReader(urlConn.getInputStream()));
and then read line by line and write it to file,How are you writing the file? Since it is binary data you need to be careful about using Reader/Writers, which are meant for character data. Look at using classes from the InputStream/OutputStream hierarchy.
- N
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