validate special chars in java

/**
 * @author lautturi.com 
 * Java example: java regex validation for special characters
 */


import java.util.*;
import java.util.regex.*;

public class Lautturi {

	public static void main(String[] args) {
		String validatedString = "@@$$&";
		
		String regexStr = "[^&%$#@!~]*";

		Pattern p = Pattern.compile(regexStr);
		Matcher m = p.matcher(validatedString);
		Boolean b = m.matches();     
		if(b) {
			System.out.println(b);
		}
	}
}