Can some one tell how to change the values of object?

The usual way is to provide an accessor method in the First package:

sub access_A
{
    my ($self, $new_a) = @_;
    $self->{A} = $new_a if defined $new_a;
    return $self->{A};
}

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Then you can call this method in the main program as follows:

my $obj = new First('A' => 'red',
                    'B' => 'green');
print "Here, A's colour is ", $obj->access_A(), "\n";
$obj->access_A('yellow');
$obj->teller();

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which will output:

Here, A's colour is red
$VAR1 = bless( {
                 'A' => 'yellow',
                 'B' => 'green'
               }, 'First' );

[download]

By the way, in the definition of sub teller there should not be any parentheses after the method name. The parentheses create a prototype, saying that the sub takes no arguments — which is unnecessary, and, in this case, incorrect.

Hope that helps,

Update: Added defined to the test in sub access_A, to solve the problem identified by tobyink, below.

Athanasius <°(((>< contra mundum

In reply to Re: Modify the Object by Athanasius
in thread Modify the Object by sathish_cudd

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