// Skeleton Vending Machine program
// Uses text - based output to demonstrate two-way Object interaction
// J Harvey 2002
// Version 2 - passes Id as a parameter to identify machine
import java.awt.*;
import java.applet.*;


public class VendingMachine2 extends Applet 
{
	
	public void init() 
	{
	Controller  con1 = new Controller();
	}
	public void paint(Graphics g) 
	{
	}

public class Controller

{
	public Controller()
	{
		System.out.println("Controller object constructed");
		Machine mach1 = new Machine(this, 1);		// amended
		Machine mach2 = new Machine(this, 2);		// amended
		mach1.turnOnMachine();
		mach2.turnOnMachine();
	}
	
public void runningOut(int which)					// amended
{
	System.out.println("Machine " + which +" reports low stock"); // amended	
}

}// end class B

public class Machine
{
	Controller con1;
	int stockRemaining=3; 
	int Id;											// new line
	public Machine(Controller bobj, int machineId)	// amended
	{
		con1 = bobj;
		Id = machineId;								// new line
		System.out.println("Machine object " + Id + " constructed "); // amended
		
	}
	
	public void turnOnMachine()
{
	System.out.println("Machine " + Id + " turned on"); // amended
	if (stockRemaining < 5)
		con1.runningOut(Id);						// amended
}
	
	
} // end Machine






}