| exit |
|
grammar |
| |
|
A directive that
performs low level cleanup (e.g., flushing output files) and
then terminates the current process.
If an expression is provided to
exit,
it is evaluated and
the low order eight bits of
the result
are made available to the parent process of the Java virtual machine.
There is no return from
exit,
even if it is called improperly.
When
exit
is called from within the context of an
execute
call, it behaves as a
return
from
execute.
Your main thread handles command line options and input files,
and when there is nothing left to do the interpreter checks
VM.exitmodel
before deciding what should happen.
VM.exitmodel
should be one of:
0 |
indicating nothing special happens when the main thread quits,
so your program must always call
exit
explicitly to quit.
| 1 |
indicating that the interpreter should do its best to guess if it should call
exit
when the main thread quits.
The guess currently looks for active threads or visible windows
before deciding what to do.
This behavior currently is the default.
| 2 |
indicating that the interpreter should always exit when the main thread quits.
|
The usage description for
exit
can be summarized as follows:
Statement:
exit ExpressionOPT ;
| |
| Example: |
The program,
import yoix.stdio.*;
printf("Nothing left to do\n");
behaves the way you would expect, but set
exitmodel
to
0
as below:
import yoix.stdio.*;
VM.exitmodel = 0;
printf("Nothing left to do\n");
exit(0);
and the explicit
exit
call is now required.
| | |
| See Also: |
reference,
return
|
|
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