Question subject: How can I call a C program in a Shell Script from Java
Posted: Thu Oct 22, 2009 1:35 pm
Joined: Thu Oct 22, 2009 1:23 pm Posts: 1 Has thanked: 0 time Have thanks: 0 time
Hi all, I have a C program namely NetLibExample.c.I have compiled it to get a NetLibexample executable in RHEL5. It is successfully running from the terminal itself by the syntax: ./NetLibExample I have written a shell script to call the same.The shell script is test.sh
test.sh cd /working/AVClient mkdir habib_test ./NetLibExample echo "1 image captured"
This shell is running successfully and giving me the output( a new folder habib_test and output from the C program)
I have to call the shell script from Java program.The program is like this. TestShell.java public class TestShell { public static void main(String[] args) { try{ System.out.println("I am here to test the shell correctly"); Runtime rt = Runtime.getRuntime(); Process proc = rt.exec("/working/test.sh"); int exitVal = proc.waitFor();
But when I am trying to call the shell from Java,shell is running properly as I am getting the new folder created from the shell.The java program is giving a exception: java.lang.IllegalThreadStateException: process hasn't exited at java.lang.UNIXProcess.exitValue(UNIXProcess.java:172) at TestShell.main(TestShell.java:27) Exception caught............java.lang.IllegalThreadStateException: process hasn't exited