Java Multithreading Security

Package Swingexample;public class Multithreadsafe implements runnable{private int nticketcount = 10;//remaining train ticket number private STR  ing strpurchasername;//ticket person name public static void main (string[] args) {//TODO auto-generated method Stubmultithreadsafe t = New Multithreadsafe ("man"); T.buytickets ();} public void Buytickets () {//assumes a maximum of 5 persons to purchase tickets at the same time multithreadsafe man1 = new Multithreadsafe ("Man1"); Multithreadsafe man2 = new Multithreadsafe ("man2"); Multithreadsafe man3 = new Multithreadsafe ("Man3"); Multithreadsafe man4 = new Multithreadsafe ("Man4"); Multithreadsafe man5 = new Multithreadsafe ("Man5"); thread T1 = new Thread (MAN1); Thread t2 = new Thread (MAN2); thread t3 = new Thread (MAN3); thread T4 = new Thread (MAN4); Thread T5 = new Thread (MAN5); T1.start (); T2.start (); T3.start (); T4.start (); T5.start ();} Public Multithreadsafe (String strpurchasername) {//TODO auto-generated Constructor stubthis.strpurchasername = Strpurchasername;} @Overridepublic void Run () {//TODO auto-generated method Stubwhile (Nticketcount; 0) {synchronized ("") {//Multithreading sync nticketcount--;if (Nticketcount = = 0) {System.out.println (This.strpurchasername +) come to purchase tickets, But the tickets are sold out! ");} else if (Nticketcount > 0) {System.out.println (This.strpurchasername + "come to purchase ticket, current remaining ticket:" + Nticketcount);} else {System.out.println ("Excess ticket management system exception, please contact the system administrator.") ");}} try {thread.sleep;} catch (Interruptedexception e) {//TODO auto-generated catch Blocke.printstacktrace ();}}}

Java Multithreading Security