The JVM catches the Division by Zero like this with C:
#include
#include
#include
void fpe_handler(int signum) {
printf("signal is %d", signum);
printf("JVM throws an ArithmeticException here...\n");
exit (1);
}
int main() {
int a = 5;
int b = 0;
signal(SIGFPE, fpe_handler);
printf("%d\n", a / b);
return 0;
}
Compile and run it prints this:
el@apollo:~$ gcc -o catch_sigfpe myc.c
el@apollo:~$ ./catch_sigfpe
signal is 8
JVM throws an ArithmeticException here...
el@apollo:~$
The operating system synchronously raises a SIGFPE exception, the C program catches it, and then the java constructs and feeds you the ArithmeticException and cleans up after itself to stop the Java program.
See more about the signal returned here: http://publib.boulder.ibm.com/infocenter/javasdk/v6r0/index.jsp?topic=%2Fcom.ibm.java.doc.user.aix64.60%2Fuser%2Fsighand.html
