import javax.swing.JOptionPane;
//while loop input validation

public class Ex15While
{
	public static void main(String[] args)
	{
		final int MIN_PLAYERS = 9;	//final, cannot be changed, like constant
		final int MAX_PLAYERS = 15;
		int players, teamSize, teams, leftOver;
		String input;
		
		input = JOptionPane.showInputDialog("Enter the number of players per team");
		teamSize = Integer.parseInt(input);
		
		while (teamSize < MIN_PLAYERS || teamSize > MAX_PLAYERS)
		{
			input = JOptionPane.showInputDialog("The number must be at least " + MIN_PLAYERS + " and no more than " + MAX_PLAYERS + ".\n Enter the number of players");
			teamSize = Integer.parseInt(input);
		}
		
		input = JOptionPane.showInputDialog("Enter the number of available players.");
		players = Integer.parseInt(input);
		while (players < 0)
		{
			input = JOptionPane.showInputDialog("Enter 0 or greater.");
			players = Integer.parseInt(input);
		}
		
		teams = players / teamSize;
		leftOver = players % teamSize;
		
		JOptionPane.showMessageDialog(null, "There will be "+teams+" teams with "+leftOver+ " players left over.");
		
		System.exit(0);
	}
	
}