Executing exe files from java program
Hi,
I need to execute exe files and pass arguments to them from my java code.
Can you give me guidelines to do that as i haven't done that before.
Thanks.
http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Runtime.html
getRuntime() method.
exec() method.
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Need urgent help. Calling of exe files from java program
This program can execute small .exe files that donot take inputs but doesn't work for exe files that takes input. what could be the problem.
Server code :-
import java.io.*;
import java.net.*;
public class Server1 {
private Player[] players;
private ServerSocket server;
private ExecHelper exh;
String command = null;
String message = null;
public Server1() {
players = new Player[5];
try {
server = new ServerSocket( 12345, 5 );
System.out.println("Server started...");
System.out.println("Waiting for request...");
catch( IOException ioe ) {
ioe.printStackTrace();
System.exit( 1 );
} //end Server constructor
public void execute() {
for( int i = 0; i < players.length; i++ )
try {
players[i] = new Player( server.accept() );
players.start();
catch( IOException ioe ) {
ioe.printStackTrace();
System.exit( 1 );
public static void main( String args[] ) {
Server1 ser = new Server1();
ser.execute();
System.exit( 1 );
private class Player extends Thread {
private Socket connection;
private ObjectOutputStream output;
private ObjectInputStream input;
public Player( Socket socket ) {
connection = socket;
try {
input = new ObjectInputStream( connection.getInputStream());
output = new ObjectOutputStream( connection.getOutputStream());
output.flush();
catch( IOException ioe ) {
ioe.printStackTrace();
System.exit( 1 );
public void run() {
try {
message = "Enter a command:";
output.writeObject( message );
output.flush();
do {
command = ( String ) input.readObject();
String osName = System.getProperty( "os.name" );
String[] cmd = new String[3];
if( osName.equals( "Windows 2000" )) {
cmd[0] = "cmd.exe";
cmd[1] = "/c";
cmd[2] = command;
else if( osName.equals( "Windows NT" ) ) {
cmd[0] = "cmd.exe" ;
cmd[1] = "/C" ;
cmd[2] = command ;
Runtime rt = Runtime.getRuntime();
Process proc = rt.exec( cmd );
exh = new ExecHelper( proc, output, input);
} while( !command.equals( "TERMINATE" ) );
catch( Throwable t ) {
t.printStackTrace();
} //end class Player
public class ExecHelper implements Runnable {
private Process process;
private InputStream pErrorStream;
private InputStream pInputStream;
private OutputStream pOutputStream;
private InputStreamReader isr;
private InputStreamReader esr;
private PrintWriter outputWriter;
private ObjectOutputStream out;
private ObjectInputStream in;
private BufferedReader inBuffer;
private BufferedReader errBuffer;
private Thread processThread;
private Thread inReadThread;
private Thread errReadThread;
private Thread outWriteThread;
public ExecHelper( Process p, ObjectOutputStream output, ObjectInputStream input ) {
process = p;
pErrorStream = process.getErrorStream();
pInputStream = process.getInputStream();
pOutputStream = process.getOutputStream();
outputWriter = new PrintWriter( pOutputStream, true );
in = input;
out = output;
processThread = new Thread( this );
inReadThread = new Thread( this );
errReadThread = new Thread( this );
outWriteThread = new Thread( this );
processThread.start();
inReadThread.start();
errReadThread.start();
outWriteThread.start();
public void processEnded( int exitValue ) {
try {
Thread.sleep( 1000 );
catch( InterruptedException ie ) {
ie.printStackTrace();
public void processNewInput( String input ) {
try {
out.writeObject( "\n" + input );
out.flush();
catch( IOException ioe ) {
ioe.printStackTrace();
public void processNewError( String error ) {
try {
out.writeObject( "\n" + error );
out.flush();
catch( IOException ioe ) {
ioe.printStackTrace();
public void println( String output ) {
outputWriter.println( output + "\n" );
public void run() {
if( processThread == Thread.currentThread()) {
try {
processEnded( process.waitFor());
catch( InterruptedException ie ) {
ie.printStackTrace();
else if( inReadThread == Thread.currentThread() ) {
try {
isr = new InputStreamReader( pInputStream );
inBuffer = new BufferedReader( isr );
String line = null;
while(( line = inBuffer.readLine()) != null ) {
processNewInput( line );
catch( IOException ioe ) {
ioe.printStackTrace();
else if( outWriteThread == Thread.currentThread() ) {
try {
String nline = null;
nline = ( String ) in.readObject();
println( nline );
catch( ClassNotFoundException cnfe ) {
// cnfe.printStackTrace();
catch( IOException ioe ) {
ioe.printStackTrace();
else if( errReadThread == Thread.currentThread() ) {
try {
esr = new InputStreamReader( pErrorStream );
errBuffer = new BufferedReader( esr );
String nline = null;
while(( nline = errBuffer.readLine()) != null ) {
processNewError( nline );
catch( IOException ioe ) {
ioe.printStackTrace();
Client code :-
// client.java
import java.io.*;
import java.net.*;
public class Client {
private ObjectOutputStream output;
private ObjectInputStream input;
private String chatServer;
private String message = "";
private Socket client;
public Client( String host ) {
chatServer = host;
private void runClient() {
try {
connectToServer();
getStreams();
processConnection();
catch( EOFException eofe ) {
System.err.println( "Client terminated connection ");
catch( IOException ioe ) {
ioe.printStackTrace();
finally {
closeConnection();
} //end method runClient
private void connectToServer() throws IOException {
System.out.println( "Attempting connection...\n");
client = new Socket( InetAddress.getByName( chatServer ), 12345);
System.out.println( "Connected to : "+ client.getInetAddress().getHostName());
private void getStreams() throws IOException {
output = new ObjectOutputStream( client.getOutputStream());
output.flush();
input = new ObjectInputStream( client.getInputStream());
private void processConnection() throws IOException {
while( true ){
try {
message = ( String ) input.readObject();
System.out.print( message );
InputStreamReader isr = new InputStreamReader( System.in);
BufferedReader br = new BufferedReader( isr );
String line = null ;
line = br.readLine();
output.writeObject(line);
output.flush();
catch( ClassNotFoundException cnfe) {
System.out.println( "\nUnknown object type received");
} //end processConnection
private void closeConnection() {
System.out.println( "\nClosing connection");
try {
output.close();
input.close();
client.close();
catch( IOException ioe ) {
ioe.printStackTrace();
public static void main( String args[] ) {
Client c;
if( args.length == 0 )
c = new Client( "127.0.0.1" );
else
c = new Client( args[0] );
c.runClient();maybe you should
1. Use code tags so the posted code is understandable
2. Stop marking your post urgent, that just puts peoples backs up
3. Stop posting the question every couple of hours on every imaginable forum.. Post it once and start a single dialog -
Executing batch file from Java stored procedure hang
Dears,
I'm using the following code to execute batch file from Java Stored procedure, which is working fine from Java IDE JDeveloper 10.1.3.4.
public static String runFile(String drive)
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I gave the SYSTEM schema the required privilege to execute the code.
EXEC DBMS_JAVA.grant_permission('SYSTEM', 'java.io.FilePermission', '<<ALL FILES>>', 'read ,write, execute, delete');
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I have used the following to load the class in Oracle 9ir2 DB:
loadjava -u [system/******@orcl|mailto:system/******@orcl] -v -resolve C:\Server\src\net\dev\Util.java
CREATE FUNCTION A1(drive IN VARCHAR2) RETURN VARCHAR2 AS LANGUAGE JAVA NAME 'net.dev.Util.a1(java.lang.String) return java.lang.String';
variable serial1 varchar2(1000);
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I have seen similar problems on other forums, but no solution posted
[http://oracle.ittoolbox.com/groups/technical-functional/oracle-jdeveloper-l/run-an-exe-file-using-oracle-database-trigger-1567662]
I have posted this in JDeveloper forum ([t-853821]) but suggested to post for forum in DB.
Can anyne help?Dear Peter,
You are totally right, I got this as mistake copy paste. I'm just having a Java utility for running external files outside Oracle DB, this is the method runFile()
I'm passing it the content of script and names of file to be created on the fly and executed then deleted, sorry for the mistake in creating caller function.
The main point, how I claim that the line in code where creating external process is the problem. I have tried the code with commenting this line and it was working ok, I made this to make sure of the permission required that I need to give to the schema passing security permission problems.
The function script is running perfect if I'm executing vbs script outside Oracle using something like "cscript //NoLogo aaa1.vbs", but when I use the command line the call just never returns to me "cmd.exe /c bb1.bat".
where content of bb1.bat as follows:
echo off
vol C: | find /i "Serial Number is"
The above batch file just get the serial number of hard drive assigned when windows formatted HD.
Same code runs outside Oracle just fine, but inside Oracle doesn't return if I exectued the following:
variable serial1 varchar2(1000);
call A1( 'C' ) into :serial1;
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Thanks for tracing teh issue to that details ;) hope you coul help. -
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adYes. It's possible. One of the Runtime.exec() methods are probably what you want:
http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Runtime.html
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Hello All,
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However, oif I try to launch a MS Word application, it asks for the entire path of WINWORD.exe, (unlike just specifying notepad.exe as the first argument in String[] callAndArgs) and this can vary from one machine to another.. how do I get around this?
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at java.lang.Runtime.exec(Unknown Source)
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