Thread: Queue Simulation

Oh oki so everytime we now println() of watever object get call the toString() method changes the [Station@8955b34] to the acutal customer name. Ive change the file name as you said to something else called it Station. You also read that he time the object was added to the queue, how is this ? I taught we have to the timer for this, sorry if my questions sound silly.

OKi ive done the generator loop for the empty slot in the cashier array based on what the user input how many cashiers will exist. But the whole thing is being yellow underlined and its asking me to Add @Suppress Warning 'un-used' to 'run()'

int cashier_input = input.nextInt();
Station[] cashiers = new Station[cashier_input];
		if (cashiers == null)
		{
			try 
			{
				line.remove();
				Thread.sleep(3000);
			} 
			catch (InterruptedException e) 
			{
				System.out.println("Sleep ERROR");
			}
			finally
			{
				System.out.println(line);
			}
		}

the code that I post basically is to remove the current customer from the queue and wait for 3000ms - 3sec untill it removes the next customer. Sorry norm I understand I had to change the current loop not make another one.

to add the customer to the array and set its time in queue value to 0 (it didn't have to wait).

I already known that to remove a customer from the queue you simply use line.remove() method. But what is the method to move the customer into the array list ?
And what do you mean set the time in queue to 0 ?

noo i put the 3 seconds wait there so it simulates that the cashier take 3 seconds to process a customer.

Norm the part where I have remove the customer from the queue and into the cashier station I cant find any syntax which allows you to do that ?

The queue basicall adds, remove and thats is is a first in first out sort thing.

Oki I didnt put everything in the number generator loop but on a separate loop:

Station[] cashiers = new Station[cashier];
		for (int i = 0; i < 10; i++)
		if (cashiers != null)
		{
			cashiers[1] = line.poll();
			System.out.println(line);
		}

It seems to work removing each customer from the queue untill the cashiers array is null.

The customer removed from the queue goes into the slot right thats what the line.poll does. An ive replaced the 10 with the max_customers

private int max_customers = 10; //FOR TESTING

the cashier ! = null isnt that the same thing saying that all the slots values are null ?

for (int i = 0; i < max_customers; i++)
		if (cashiers != null)
		{
			cashiers[0] = line.poll();
			System.out.println(line);
		}

Yes I understand the design theory but its a whole, different story when you try to implement it, using the right methods, syntax etc. And the reason why I made cashiers an array of Station is because it wouldn't allow me to use the .poll() method to remove the customer.

To me this look oki If I carry on and mess about with it I can hopefully get what this assignment wants me to produce.

the reason why the whole thing went into station was because you suggested to rename the class and use a sub class called customer to hold all the data. And to be honest it doesnt really matter what names are as long as I can print each stage of the queue be processed at show the time spent in the queue.

Aftet array list how do I come about recording the arrival time exit time to output each customers time spent waiting ?

and then how do I output the customer name as well as the wait time or is it just going to keep saying customer@fjf272638b etc

in the loop when the customer is added to the queue how would you implement the .getTime method inside the loop.

when I get the current time I then store it into the arrival time which is in the customer class where the data is store right and from the i nee to get the exit again store that in the customer class work the difference with is wait time and from the I just print out wait along with the customer name by using the toString method

Norm ive done this to the current loop:

try 
				{
					Thread.sleep(wait * 1);
					line.add(new Station());
					System.out.println(line);
					System.currentTimeMillis();
 
				}

So now its getting the current system times every time its adding a new customer into the queue however how do I set the arrival_time in the customer class, I dont known the correct coding ?