public static void Battle (boolean isBoss) {
    String attack = "";

    if (isBoss) {

    } else if (!isBoss) {

      low = 400;
      high = 600;
      result = r.nextInt(high-low) + low;
      enemyHealth = result;

      System.out.println("A knight has appeared!");
      while (health > 0 && enemyHealth > 0) {
        System.out.println("You have " + health + " hp.");
        System.out.println("---------------------");
        System.out.println("Your enemy has " + enemyHealth + " hp.");
        System.out.println("---------------------");
        System.out.println("Choose an attack: \n-Basic attack \n-Heavy attack \n-Fireball \n-Force pulse \n-Heal \n-Greater heal \n-Impale \n-Snipe \n-Slash");
        attack = scnr.nextLine().toLowerCase();

        switch (attack) {
          case "basic attack": enemyHealth -= basicattack(0); break;
          case "heavy attack": enemyHealth -= heavyattack(0); break;
          case "fireball": enemyHealth -= fireball(0); break;
          case "force pulse": enemyHealth -= forcepulse(0); break;
          case "heal": enemyHealth -= heal(0); break;
          case "greater heal": enemyHealth -= greaterheal(0); break;
          case "impale": enemyHealth -= impale(0); break;
          case "snipe": enemyHealth -= snipe(0); break;
          case "slash": enemyHealth -= slash(0); break;
        }

        low = 1;
        high = 3;
        result = r.nextInt(high-low) + low;

        switch (result) {
          case 1: health -= basicattack(1); break;
          case 2: health -= heavyattack(1); break;
          case 3: health -= slash(1); break;
        }

    }

  }