You have not created an OBJECT.

"Foo1" is a module/package/class (depending on how you want to look at it), but it is NOT an object (at least in the OO perl sense).

If you want to call bar without creating and object, call the class method: 

Foo1::bar();

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If you want to create an object, since you do not have a "new" method, you can try (untested): 
my $obj = bless {},"Foo1";

$obj->bar(); # Calling an instance method. 
             # this passes DIFFERENT parameters than the class method,
+ above.

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     Syntactic sugar causes cancer of the semicolon.        --Alan Perlis

In reply to Re: making a library by NetWallah
in thread making a library by adieu

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