Chain of Responsibility Pattern

Call out objects in sequence </ font>

Check with the following class structure

class	Explanation
abstract chain.class	Define chain function The field next stores the next object instance set():Set the following objects doChain()Define
chai1.class～chain3.class	Implement chain
user(Main.class)	Operation check

User Includes the meaning that other developers use this pattern

`abstract_class_chain`


abstract class chain{
   String name = this.getClass().getName();
   chain  next;             //Store the following objects

   chain set(chain next){
         this.next=next;
         return this.next;  //Returns the next object
   }

   abstract void doChain();
   void  print(){
         System.out.println(name);}
}

`chain1.class`


class chain1 extends chain{
      void   doChain(){
             print();
             if(next != null){next.doChain();}  //DoChain for the next object()Run
      }
}

`chain2.class`


class chain2 extends chain{
      void   doChain(){
             print();
             if(next != null){next.doChain();} 
      }
}

`chain3.class`


class chain3 extends chain{
      void   doChain(){
             print();
             if(next != null){next.doChain();}
      }
}

`user(Main.class)`


public static void main(String[] args){
   chain1 ch1 = new chain1();
   chain2 ch2 = new chain2();
   chain3 ch3 = new chain3();
   ch1.set(ch2).set(ch3);
   ch1.doChain();
}