JNI system.out and printf behaviour

Question

I am writing a program that uses JNI to interface with a simple c program. I have created the following programs:

public static void main(String[] args) {
           


        

Answer 1

Yes. You will need to call flush.

In C, that is the fflush call -

printf("Hello JNI\n");
fflush(stdout);
return 10;

In Java, that is just flush on the Stream -

System.out.println("before");
System.out.flush();