Java Runtime Exec Example

import java.io.*;

class RunProc {
public static void main(String args[]) {
try {
Runtime rt = Runtime.getRuntime();
Process pr = rt.exec("cmd /c dir");

InputStream inStd = pr.getInputStream();
InputStreamReader inStdR = new InputStreamReader(inStd);
BufferedReader bStd = new BufferedReader(inStdR);

String line=null;

while((line=bStd.readLine()) != null) {
System.out.println(line);
}
int exitVal = pr.waitFor();
System.out.println("Exited with error code "+exitVal);

} catch(Exception e) {
System.out.println(e.toString());
e.printStackTrace();
}
}
}