hearts

    public static String hearts(float amount, boolean full) {
        StringBuilder builder = new StringBuilder();
        int hearts = Math.round(amount);

        if (!full) {
            if (hearts % 2 != 0) {
                hearts -= 1;
            }
        }

        while (hearts > 0) {
            builder.append(symbol(amount));
            hearts -= 2;
        }
        return builder.toString();
    }

    public static String tabHearts(int maxHealth, float currentHealth, float lostHealth) {
        String color = maxHealth == 16 ? DARK_AQUA + "" : formatting[(maxHealth / 2) - 1] + "";

        return color + hearts(currentHealth, true) + DARK_GRAY + hearts(lostHealth, false);
    }

    public static String signHearts(int amount) {
        return "{\"text\":\"" + hearts(amount, true) + "\",\"color\":\"" + formatting[(amount / 2) - 1].getName() + "\"}";
    }

    /** @param health determines whether character will return as a heart or a skull. */
    private static StringBuilder symbol(float health) {
        StringBuilder builder = new StringBuilder();
        if (health < 22) {
            return builder.append(new Character((char)10084));
        } else {
            return builder.append(new Character((char)9760));
        }
    }