Shell Programming and Scripting

Code:

class myClass
{
  public void myMethod ()
  {
     System.out.println ("From myMethod");
  }

  public static void main (String[] args)
  {
     myClass klass = new myClass();
     System.out.println ("From main");
     klass.myMethod();
  }
}

Thats how a class looks like. You can not call a method from the command line. All those calls should be done from within the class itself.

Thanks Vino.

I have one more query, if one script calls another script, can the calling script get the return code from called script? return code maybe boolean or integer.

In shell scripts, exit status is an integer. That integer can be a 0 for success and any other interger for failure. There is no concept of boolean as such. Unless you consider 0 and non-0 numbers.

Vino,

Can we define exit status intereger values for our purpose excpet 0?

like can i set exit status:

"1" for error occured because of reason #1
"2" for error occured because of reason #2
...

Yes you can. The world is at your feet.

But i guess there are some system define exit codes also...can we change them also? how we know that which exit codes are available for change from the range of 1-255?

Hi.
I hope you do not mind, Vino. I'm going to aswer girish.sh for you.

- To get the exit status:
Suppose you call inside.sh in your script:

Code:

...
inside.sh
echo $?
...

The "echo $?" will echo the exit status of inside.sh, so $? variable will hold the exit status of the last executed command/script.

- You can "force" the exit statis of your scripts giving:

Code:

exit <N>

being <N> the number you want.

Regards.