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(javax.swing.JOptionPane/showMessageDialog nil "Hello World")

use Inline (
  Java => 'STUDY',
...
);

javax::swing::JOptionPane->showMessageDialog("Hello World");

In method showMessageDialog of class javax::swing::JOptionPane: Can't 
+find any signature that matches the arguments passed (Hello World).
Available signatures are:
...
        error was: Wrong number of arguments at C:/strawberry/perl/sit
+e/lib/Inline/Java/Object.pm line 107
    static showMessageDialog(java.awt.Component, java.lang.Object)
        error was: Wrong number of arguments at C:/strawberry/perl/sit
+e/lib/Inline/Java/Object.pm line 107 at C:\Users\thequietcenter\prg\t
+mp\inline\try2.pl line 6

package start;

...
        });
    }
}

use Inline (
  Java => 'STUDY',
...
$f->getContentPane->add($l);
$f->pack;
#$f->setVisible

Can't call method 'add' on an object (Inline::Java::Object) that is
not bound to Perl at C:\Users\thequietcenter\prg\tmp\inline\try2.pl
line 13