// Simulates race condition on threads in Java

// The only reason Account has to be called as an extension of Thread is
// because it calls "sleep".

class Account extends Thread {
  int value;
  String Name;

Account(String N) { value = 0;  Name=N; } // constructor

public void run() { for (;;) {} }

public void deposit(int M) {
   int temp = value;
   System.out.println(Name + " accepting deposit " + M);
   try {                         // simulates long computation or I/O 
         Thread.currentThread().sleep(100);  
       }
   catch(InterruptedException ie) {}
   value = temp+M;
   System.out.println(Name + " deposit accepted: New value " + value);
  }  
}

class Depositor extends Thread {
   Account[] accountList;  // sequence of accounts to deposit to
   int[] amountList;       // sequence of amounts to deposit

   Depositor(Account[] accs, int[] al) {     // constructor
      accountList = accs;
      amountList = al;
    }

   public void run() { 
     for (int i=0; i < accountList.length; i++)
       accountList[i].deposit(amountList[i]);
  }
}

// creates three accounts and three depositors, who deposit various amounts
// to the accounts.

public class race {

public static Account savings = new Account("Savings");

public static Depositor fred = 
      new Depositor( new Account[] {savings}, new int[] {1});

public static Depositor gina = 
      new Depositor( new Account[] {savings}, new int[] {10});

public static void main (String s[]) {
  fred.start();
  gina.start();
   }
}