How to call EXE from JAVA

[narayana murthy pedapudi]

Hi Buddies,
I have an Exe File, want to call that in my java application can anyone tell me how to do it.
narayana

[Peter Kristensson]

Hi.
Take a look at the java.lang.Runtime.exec() method:
http://java.sun.com/j2se/1.4.1/docs/api/java/lang/Runtime.html
/Peter

[narayana murthy pedapudi]

Hi Peter,
Thanks for the Information.

[Tiago Fernandez]

import java.io.*;
public class ExeCommand {
public static void main(String args[]) {
try {
Process p = Runtime.getRuntime().exec("path_of_your_exe_file");
p.waitFor();
}
catch(IOException e){}
catch(InterruptedException e){}
}
}
[ August 01, 2003: Message edited by: Tiago Fernandez ]

[William Brogden]

Tiago - it is not quite that simple. IF the application writes anything to stdout or stderr you need to provide for reading those streams or you will get strange behavior.
Bill

[VIJAY Yadlapati]

Use java.lang.Runtime.exec() for executing external commands. If you are expecting any output from that application, use InputStream on that created Process.
Here is the sample code for DIR
*******************************
Runtime runtime = Runtime.getRuntime();
try
{
Process p1 = runtime.exec("cmd /c Dir");
InputStream is = p1.getInputStream();
int i = 0;
while( (i = is.read() ) != -1)
{
System.out.print((char)i);
}

}
catch(IOException ioException)
{
System.out.println(ioException.getMessage() );
}