Template mode of Java mode--abstract class

Template Design Patterns (templates)

Abstract classaction{//define a behavior class     Public Static FinalString work = "Work";  Public Static FinalString sleep = "Sleep";  Public Static FinalString EAT = "EAT";  Public Abstract voideat ();  Public Abstract voidsleep ();  Public Abstract voidWork ();  Public voidcommand (String str) {Switch(str) { Case"Work":                 This. Work ();  Break;  Case"Sleep":                 This. Sleep ();  Break;  Case"Eat":                 This. Eat ();  Break; }    }}classPeopleextendsaction{ Public voidsleep () {System.out.println ("People are sleeping."); }     Public voideat () {System.out.println ("People are eating."); }     Public voidWork () {System.out.println ("People are working"); }}classPigextendsaction{ Public voidsleep () {System.out.println ("The Pig is sleeping."); }     Public voideat () {System.out.println ("Pigs are eating."); }     Public voidWork () {}}classRobotextendsaction{ Public voidsleep () {} Public voideat () {System.out.println ("The robot is replenishing energy."); }     Public voidWork () {System.out.println ("The robot is working"); }} Public classtest{ Public Static voidMain (String args[]) {Fun (Newpeople ()); Fun (NewRobot ()); }     Public Static voidFun (Action Act) {Act.command (ACT).        work); Act.command (Act.        SLEEP); Act.command (Act.    EAT); }}

Template mode of Java mode--abstract class