How to execute an external executable in my java program?

Question

hi,
i want to write a java program to execute some external executables.
for example, i had an executable which takes a string as its input parameter, and:
it writes to stdout a string : "[stdout] hello, "+parameter+"!";
it writes to stderr a string : "[stderr] hello, "+parameter+"!".
and it exits with an error code 1.
my java program looks like this:
public class Test {
  public static void main(String[] args)
  throws Exception {
    String inputParameter = "heavyz";
    String stdoutOutput = null;
    String stderrOutput = null;
    int exitCode;
    // Do something here to launch the executable,
    // providing inputParameter as its input,
    // getting its stdout output to String stdoutOutput,
    // and its stderr output to String stderrOutput,
    // and its exit code to int exitCode.
    return;
}anybody can help me to complete the program above?
thanks a lot.
heavy ZHENG

Answer 1

check out Runtime.getRuntime().exec();