The magic of Java polymorphism

Previously understood the basic idea, this version of the demonstration and the application is more real.

On the way down abstract methods and classes, interfaces, it is natural ...

Java files are put together, the file name of the previous post is compared to:

//////////////////////////// PackageCc.openhome; Public classRole {PrivateString name; Private intLevel ; Private intBlood;  Public intGetblood () {returnBlood; }   Public voidSetblood (intblood) {     This. Blood =Blood; }   Public intGetlevel () {returnLevel ; }   Public voidSetLevel (intLevel ) {     This. Level =Level ; }   PublicString GetName () {returnname; }   Public voidsetName (String name) { This. Name =name; }     Public voidfight () {//subclass Override this method;  }}////////////////////////////////////// PackageCc.openhome; Public classSwordsmanextendsRole {@Override Public voidfight () {System.out.println ("Attack with Swords"); }}///////////////////////////////////////////// PackageCc.openhome; Public classMagicianextendsRole {@Override Public voidfight () {System.out.println ("Attack with Magician"); }}/////////////////////////////////////////// PackageCc.openhome; Public classRPG { Public Static voidMain (string[] args) {Swordsman Swordsman=NewSwordsman (); Swordsman.setname ("Justin"); Swordsman.setlevel (1); Swordsman.setblood (200); System.out.printf ("Swordsman: (%s,%d,%d)%n", Swordsman.getname (), Swordsman.getlevel (), Swordsman.getblood ()); Magician Magician=NewMagician (); Magician.setname ("Monica"); Magician.setlevel (2); Magician.setblood (100); System.out.printf ("Magician: (%s,%d,%d)%n", Magician.getname (), Magician.getlevel (), Magician.getblood ());    Showblood (Swordsman);    Showblood (magician);    Drawfight (Swordsman);    Drawfight (magician); Role Role1=NewSwordsman (); Role Role2=NewMagician (); Swordsman SwordsMan1=(swordsman) Role1; Magician Magician1=(Magician) role2; Swordsman SwordsMan2=NewSwordsman (); Role Role3=swordsMan2; Swordsman SwordsMan3=(swordsman) Role3; }    /*Public static void Showblood (Swordsman swordsman) {System.out.printf ("%s Blood%d%n",  Swordsman.getname (), Swordsman.getblood ());                                           } public static void Showblood (Magician Magician) {System.out.printf ("%s Blood%d%n",  Magician.getname (), Magician.getblood ()); }  */     Public Static voidShowblood (role role) {System.out.printf ("%s Blood%d%n", Role.getname (), Role.getblood ()); }     Public Static voiddrawfight (role role) {System.out.print (Role.getname ());  Role.fight (); }}/////////////////////////////////

The magic of Java polymorphism