GuessTheNumber.java

import java.util.Random;

public class GuessTheNumber {

	private final Integer value;
	private final int min;
	private final int max;
	private int guesses = 0;
	private boolean solved = false;

	public GuessTheNumber(int min, int max, int value) {
		this.min = min;
		this.max = max;
		this.value = value;
	}

	public GuessTheNumber(int min, int max) {
		this(min, max, getRandomNumber(min, max));

	}

	public int guess(int i) {
		if (solved)
			throw new IllegalStateException();

		guesses++;

		int ret = value.compareTo(i);

		if (ret == 0)
			solved = true;

		return ret;
	}

	public void resetCount() {
		guesses = 0;
		solved = false;
	}

	public int getValue() {
		if (solved == false)
			throw new IllegalStateException();

		return value;
	}

	public int getMin() { return min; }
	public int getMax() { return max; }

	private static int getRandomNumber(int min, int max) {
		return new Random().nextInt(max - min + 1) + min;
	}
}