Java multithreaded producer Consumer issues

1  Packageproducer;2 3  Public classSyncstack {4     intIndex =0;5steamedbun[] Bunarr =NewSTEAMEDBUN[6];//only 6 elements can be placed in a stack.6     7      Public synchronized voidpush (Steamedbun bun)8     {9          while(Index >= bunarr.length)//waiting on full stackTen         { OneBun.setindex (bunarr.length-1);//Fixed steamed bun number A             Try { -                  This. Wait (); -}Catch(interruptedexception e) { the                 //TODO auto-generated Catch block - e.printstacktrace (); -             } -         } +         //this.notify (); //called when a single thread -          This. Notifyall ();//broadcast to all chefs +          ABunarr[index] =Bun; atindex++; -     } -      -      Public synchronizedsteamedbun pop () -     { -          while(Index ==0)//stack empty, no steamed bread when waiting for production in         { -             Try { to                  This. Wait (); +}Catch(interruptedexception e) { -                 //TODO auto-generated Catch block the e.printstacktrace (); *             } $         }Panax Notoginseng          This. Notify ();//notify the foodie there is steamed bread -          theindex--; +         returnBunarr[index]; A     } the      +      -}

1  Packageproducer;2 3  Public classProducerImplementsrunnable{4Syncstack SS =NULL;5     intpId;6      PublicProducer (Syncstack SS,intpId) {7          This. SS =SS;8          This. PId =pId;9     }Ten      One @Override A      Public voidrun () { -         //TODO auto-generated Method Stub -          for(inti=0;i<10;i++) the         { -Steamedbun bun =NewSteamedbun (ss.index,pid*1000+i); - Ss.push (bun); -SYSTEM.OUT.PRINTLN ("* * * * did" +bun); +              -             Try { +                 intIRandom = (int) (Math.random () *2000); A Thread.Sleep (irandom); at}Catch(interruptedexception e) { -                 //TODO auto-generated Catch block - e.printstacktrace (); -             } -         } -     } in  -}

1  Packageproducer;2 3  Public classConsumerImplementsrunnable{4 5Syncstack SS =NULL;6      PublicConsumer (syncstack ss)7     {8          This. SS =SS;9     }Ten      One @Override A      Public voidrun () { -         //TODO auto-generated Method Stub -          for(intI= 0;i<30;i++) the         { -Steamedbun bun =Ss.pop (); -System.out.println ("Eat" +bun); -              +             Try { -Thread.Sleep ((int) (Math.random () * 1000)); +}Catch(interruptedexception e) { A                 //TODO auto-generated Catch block at e.printstacktrace (); -             } -         } -     } -  -}

1  Packageproducer;2 3  Public classSteamedbun {4     Private intID;5     Private intindex;6      PublicSteamedbun (intIndexintID) {7          This. ID =ID;8          This. index =index;9     }Ten      One      PublicString toString () A     { -         return"A steamed bun, is the basket in the first" + (index+1) + "steamed bread, number" +ID; -     } the      -      Public voidSetindex (intindex) { -          This. index =index; -     } +}

1  Packageproducer;2 3  Public classTest {4      Public Static voidMain (string[] args) {5Syncstack SS =NewSyncstack ();6         7         //new 3 chefs and a foodie's thread8         NewThread (NewProducer (ss,1) . Start ();9         NewThread (NewProducer (ss,2) . Start ();Ten         NewThread (NewProducer (ss,3) . Start (); One          AConsumer Consumer =NewConsumer (ss); -         NewThread (consumer). Start (); -     } the}

Java multithreaded producer Consumer issues