Running external executable file from Java program

Running external executable file from Java program

I'm trying to write a Java program which gets a executable file to run
under Linux. This executable file receives two parameters and performs a
nmap -sP operating with the two given parameters.
I've called this file as file.exe and its content is the one below:
nmap -sP $segment1-$segment1
I already did a chmod +x file.exe and it's in same directory where the
.class is present.
The Java code is the following:
import java.lang.Runtime;
import java.lang.Process;
import java.io.IOException;
import java.lang.InterruptedException;
public class runFile {
public static void main (String args[]) throws IOException,
InterruptedException {
Runtime r = Runtime.getRuntime();
Process p = r.exec("file.exe "+args[0]+" "+args[1]);
p.waitFor();
}
}
After compiling, Whenever I try to run it by
java runFile
I'm getting the following exception and errors log:
Exception in thread "main" java.io.IOException: Cannot run program
"file.exe": error=2, No such file or directory at
java.lang.ProcessBuilder.start(ProcessBuilder.java:1041) at
java.lang.Runtime.exec(Runtime.java:617) at
java.lang.Runtime.exec(Runtime.java:450) at
java.lang.Runtime.exec(Runtime.java:347) at runFile.main(runFile.java:12)
Caused by: java.io.IOException: error=2, No such file or directory at
java.lang.UNIXProcess.forkAndExec(Native Method) at
java.lang.UNIXProcess.(UNIXProcess.java:135) at
java.lang.ProcessImpl.start(ProcessImpl.java:130) at
java.lang.ProcessBuilder.start(ProcessBuilder.java:1022) ... 4 more
What am I missing?