public class Computer {
	
	private String name;
	private int totalMemory;
	private int availableMemory;
	private int users;
	
	Computer(String computerName, int newTotalMemory) {
		users = 0;
		name = computerName;
		totalMemory = newTotalMemory;
		availableMemory = totalMemory;
	}
	
	void add(String name, int requestedMemory) {
		// NOTE: instance variable name is being shadowed
		// NOTE: percentage variable name also used in percentageMemAvail
		double percentage;
		
		if (requestedMemory <= availableMemory) {
			users = users + 1;
			availableMemory = availableMemory - requestedMemory;
			
			percentage = percentageMemAvail();
			System.out.println("User Name: " + name + " added.");
			System.out.println(percentage + "% of memory available.");
			System.out.println("");
		} else {
			System.out.println("Cannot add user " + name);
		}
	}
	
	double percentageMemAvail() {
		// NOTE: percentage variable name used in add method
		double percentage;
		// NOTE: Do we need the (double) ?
		percentage = (double)availableMemory / totalMemory * 100;
		
		return percentage;
	}
	
	public String toString() {
		// NOTE: '\n' is a special character that means "new line"
		String temp = "Computer Name: " + name;
		temp = temp + "\nMemory: " + totalMemory;
		temp = temp + "\nAvailable Memory: " + availableMemory + " Meg";
		temp = temp + "\nUsers: " + users;
		
		return temp;
	}

	public static void main(String[] args) {
		int totalMemory = 100;
		int requestedMemory = 20;
		
		Computer computer = new Computer("doritos.cs.umd.edu", totalMemory);
		
		// NOTE: argument variable name the same as parameter name in add method
		computer.add("Peter", requestedMemory);
		computer.add("Rose", 30);
		
		// NOTE: percentage variable name used in add and percentageMemAvail
		double percentage = computer.percentageMemAvail();
		System.out.println("Percentage of Memory Available: " + percentage);
		System.out.println("");
		System.out.println(computer);
	}
}