Condition Objects

• It is customary to give the condition object a name that describes condition to test
• You need to implement an appropriate test
• As long as test is not fulfilled, call await on the condition object:

  public void withdraw(double amount)
  {
     balanceChangeLock.lock();
     try
     {
        while (balance < amount)
        sufficientFundsCondition.await();
        . . .
     }
     finally
     {
        balanceChangeLock.unlock();
     }
  }