import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;

class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		List<String> strs = Arrays.asList("abc123#67812", "abc123%67812", "abc123#678120");
		String regexStr = "[^%\\s]{1,12}";
		Pattern pattern = Pattern.compile(regexStr);

		for (String itemValue : strs) {
			Matcher matcher = pattern.matcher(itemValue);
			System.out.println("\"" + itemValue + "\": " + matcher.matches());
		}
	}
}