Lumiukko l1 = new Lumiukko();
 Lumiukko l2 = new Lumiukko();
 Lumiukko l3 = new Lumiukko();

 l2 = l1;

 l1.piirraKorvat();

 if ( l2.onkoKorvat() ) ...

 
 l1 = l3;

 
 l1 == 18
 
 l2 == 28
 
 l3 == 32
 
 18
 28
 32