Delay in executing Native Methods in Java

Question

Hi,
I have the following code in my Java application.
After calling, there is a long delay in actual execution of the native methods call. I noticed, when the program is about to terminate, then the ouput is coming from the native method.
Here is the sample code & output of the program:
Source :
======
for (int i=0; i<5; i++) {
System.out.println("Before : " + out);
new SchedulerTimer().displayHelloWorld();
System.out.println("After");
Output:
=====
Before : Agent : Tue Nov 09 20:51:50 GMT+05:30 2004
After
Before : Agent : Tue Nov 09 20:51:50 GMT+05:30 2004
After
Before : Agent : Tue Nov 09 20:51:50 GMT+05:30 2004
After
Before : Agent : Tue Nov 09 20:51:50 GMT+05:30 2004
After
Before : Agent : Tue Nov 09 20:51:50 GMT+05:30 2004
After
Hello world!
Hello world!
Hello world!
Hello world!
Hello world!
Expected :
========
Before : Agent : Tue Nov 09 20:51:50 GMT+05:30 2004
Hello world!
After
Before : Agent : Tue Nov 09 20:51:50 GMT+05:30 2004
Hello world!
After
Before : Agent : Tue Nov 09 20:51:50 GMT+05:30 2004
Hello world!
After
Before : Agent : Tue Nov 09 20:51:50 GMT+05:30 2004
Hello world!
After
Before : Agent : Tue Nov 09 20:51:50 GMT+05:30 2004
Hello world!
After
(In the above output, "Hello world!" is the output expected from the native method)
(displayHelloWorld - is the native method)
Thanks,

Answer 1

Ivar's guess is probably right.
If you use
cout << "Hello world!\n";
in a C++ program most probably the output will be buffered.
Even
cout << "Hello world!" << endl;
is not a total guarantee for flushing the buffer, although endl promises to do that. Check your C++ documentation.