如何在Java中执行“带有返回值的exe”？

Question

I created an executable using cpp which accepts two integer values and then returns the sum. I'm executing the EXE with Java using the following code:

try {
    pr = rt.exec("C:\\Users\\babesha.fm\\Desktop\\SUM.exe 10 5");
    int exitVal = pr.waitFor();

    System.out.println("Exited with error code " + exitVal);
} catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
} catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

I used the return statement while creating the exe. But the problem is when I executed this exe by using the above java code. pr.waitFor(); statement returns the sum value instead of successful exicution.Did I done anything wrong .

Answer 1

you could try this:

Process p = Runtime.getRuntime().exec("xxx.EXE p1 p2");
// This is as same as what we do at DOS Prompt.
InputStream is = p.getInputStream();
int n = 0;
while(n != -1)
{
n = is.read();
System.out.print(n);
}