这个面向对象程序的错误是什么？

Question

我正在学习perl,当我尝试做面向对象时,我遇到了错误,这是代码,Test.pm

 #!/usr/bin/perl 

package Test;

sub new
{
    my $class = shift;
    my $self = {
        _firstName => shift,
        _lastName  => shift,
        _ssn       => shift,
    };
    # Print all the values just for clarification.
    print "First Name is $self->{_firstName}\n";
    print "Last Name is $self->{_lastName}\n";
    print "SSN is $self->{_ssn}\n";
    bless $self, $class;
    return $self;
}

sub setFirstName {
    my ( $self, $firstName ) = @_;
    $self->{_firstName} = $firstName if defined($firstName);
    return $self->{_firstName};
}

sub getFirstName {
    my( $self ) = @_;
    return $self->{_firstName};
}
1;

和test.pl

#!/usr/bin/perl
use Test;
$object = Test::new( "Mohammad", "Saleem", 23234345); # Get first name which is set using constructor.
$firstName = $object->getFirstName();

print "Before Setting First Name is : $firstName\n";

# Now Set first name using helper function.
$object->setFirstName( "Mohd." );

# Now get first name set by helper function.
$firstName = $object->getFirstName();
print "Before Setting First Name is : $firstName\n";

当我试图跑步时,它显示出这样的一些错觉,

Can't locate object method "new" via package "Test" at test.pl line 2.

这个面向对象程序的错误是什么？

Answer 1

Test是作为perl标准发行版的一部分的模块的名称.你use Test正在加载而不是你的测试; 为您的模块选择另一个名称.