Java Puzzle 20 (Evaluate the password strategies)

Puzzle20.java

public class Puzzle20 {
	
	public static void main(String[] args) {
		System.out.println("Which password strategy is more secure?");
	}
	
	/**
	 * For your security, passwords must follow these requirements:
	 * Passwords must be 8 characters in length.
	 * Passwords must include at least one letter (a-z, A-Z) or supported special character (@, #, $ only).
	 * Passwords must include at least one number (0-9).
	 * Passwords cannot contain spaces or unsupported special characters.
	 * Passwords previously used cannot be re-used.
	 * @return
	 */
	private static boolean checkPasswordStrategy1(String pw) {
		boolean isEightChars = pw.length() == 8;
		boolean hasUppercase = !pw.equals(pw.toLowerCase());
		boolean hasLowercase = !pw.equals(pw.toUpperCase());
		boolean hasSpecial = pw.contains("@") || pw.contains("#") || pw.contains("$");
		boolean noUnsupported = pw.replaceAll("[A-Za-z0-9]*", "")
				.replace("@", "").replace("#", "").replace("$", "").length() == 0;
		return isEightChars && hasUppercase && hasLowercase && hasSpecial && noUnsupported;
	}
	
	private static boolean checkPasswordStrategy2(String pw) {
		return pw.length() >= 8 && pw.length() <= 100;
	}
	
}