Exception question.

[jaman tai]

In regards to exceptions, which of the following are true?

a) An exception can be thrown by a no argument constructor.

b) An exception can only be thrown by a multi argument constructor.

c) Uncaught exceptions should be listed in the throws clause of a class definition.

d) In all cases except exiting the JVM, the finally clause of a try block is executed.

are the answers a and d. what is the meaning of d?

[premraj cheguri]

hi Jaman,

i think D is talking about System.exit(1); In this case the finally cluase will not be executed

[Seb Mathe]

Regarding answer d :

...
    public static void main(String[] args) {
        System.out.print(f());
 
    }
 
    static int f() {
        try {
            throw new Exception();
        } catch (Exception e) {
            //System.exit(0);
            return -1;
        } finally {
            System.out.print("finally");
        }
        
    }

If you execute this code, "finally-1" will be printed, ok ?
(This demonstrate "In all cases, the finally clause of a try block is executed")
But if you uncomment the line System.exit(0), there's no output (JVM exiting before finally block can be executed).

Hope that hepls.

[jaman tai]

oh, you are right! , thanx!

[Mandy Hou]

the finally clause of a try block is executed regardless catch or uncatch exception .Except exit JVM by system.exit(1).