"Troubleshooting Thread safety issues: Synchronizing Methods"

Synchronization method: is to add the Sync keyword to the method

What is the lock object for the synchronization method? This (do not believe you can try to change the following this to other objects)

 Packagecom.test; Public classSellticketImplementsRunnable {/**Note that if you are inheriting, you must use static adornments here*/    Private intTickets = 60; Private intx = 0; @Override Public voidrun () { while(true){            if(x%2==0){                synchronized( This) {Dosell (); }            }Else{sellticket (); } x++; }    }    Private synchronized voidSellticket () {Dosell (); }    Private voidDosell () {if(tickets>0){            Try{Thread.Sleep (50); } Catch(interruptedexception e) {e.printstacktrace (); } System.out.println (Thread.CurrentThread (). GetName ()+ "+tickets+" is being sold "ticket"); Tickets--; }    }}

 package   com.test;  public  class   selltickettest { public  static  void   main (string[] args)         {sellticket Sellticket  = new   Sellticket ();        Thread T1  = new  Thread (sellticket, "window one"  = new  Thread (sellticket, "window two"  = new  Thread (sellticket, "window three" 

If the static method is synchronous, then the lock object is not this, but the class file.

"Troubleshooting Thread safety issues: Synchronizing Methods"