Java multi-threaded ticketing problem

Define a class to implement the Runnable interface, define a ticketing method that needs to be synchronized, and then override the sale method of the Run method call ticket

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1. 
   
   2. Class Saleticket implements runnable{
   4. private int tickets = 100;
   10. private synchronized void sale () {
   12. if (Tickets > 0) {
   14. System.out.println (Thread.CurrentThread (). GetName () + "sell first" + (tickets--) +"Ticket");
   18. try{
   20. Thread.Sleep (100);
   22. }catch (Interruptedexception e) {
   24. E.printstacktrace ();
   26. }
   28. }
   30. }
   32. public Void Run () {
   34. While (Tickets > 0) {
   36. Sale ();
   38. }
   40. }
   42. }
   48. Public class Javatest {
   52. public static void Main (string[] args) {
   58. Saleticket st = New Saleticket ();
   60. Thread T1 = new Thread (St, "one Window");
   62. Thread t2 = new Thread (St, "window number second");
   64. thread t3 = new Thread (St, "window number third");
   66. thread t4 = new Thread (St,"window number fourth");
   68. T1.start ();
   70. T2.start ();
   72. T3.start ();
   74. T4.start ();
   82. }
   84. }

Java multi-threaded ticketing problem