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//: generics/BankTeller.java

package generics; /* Added by Eclipse.py */

// A very simple bank teller simulation.

import java.util.*;

import net.mindview.util.*;

class Customer {

private static long counter = 1;

private final long id = counter++;

private Customer() {}

public String toString() { return "Customer " + id; }

// A method to produce Generator objects:

public static Generator<Customer> generator() {

return new Generator<Customer>() {

public Customer next() { return new Customer(); }

};

}

}

class Teller {

private static long counter = 1;

private final long id = counter++;

private Teller() {}

public String toString() { return "Teller " + id; }

// A single Generator object:

public static Generator<Teller> generator =

new Generator<Teller>() {

public Teller next() { return new Teller(); }

};

}

public class BankTeller {

public static void serve(Teller t, Customer c) {

System.out.println(t + " serves " + c);

}

public static void main(String[] args) {

Random rand = new Random(47);

Queue<Customer> line = new LinkedList<Customer>();

Generators.fill(line, Customer.generator(), 15);

List<Teller> tellers = new ArrayList<Teller>();

Generators.fill(tellers, Teller.generator, 4);

for(Customer c : line)

serve(tellers.get(rand.nextInt(tellers.size())), c);

}

} /* Output:

Teller 3 serves Customer 1

Teller 2 serves Customer 2

Teller 3 serves Customer 3

Teller 1 serves Customer 4

Teller 1 serves Customer 5

Teller 3 serves Customer 6

Teller 1 serves Customer 7

Teller 2 serves Customer 8

Teller 3 serves Customer 9

Teller 3 serves Customer 10

Teller 2 serves Customer 11

Teller 4 serves Customer 12

Teller 2 serves Customer 13

Teller 1 serves Customer 14

Teller 1 serves Customer 15

*///:~