public @interface Rule {
    static int count = 0;
    String name();
    String description(); //Note the parentheses

    public Rule(String name, String description) {
        count++;

        this.name = name;
        this.description = description;
    }
}

public class Airline {
    private String code;

    @Rule(name = "Formatted Code", description = "e.g. Format 'la' as 'LA'")
    public String codeFormatted() {
        return code.toUpperCase();
    }

    public static void main(String args[]) {
        System.out.println(Rule.count);
    }
}

javac Rule.java
Rule.java:6: error: <identifier> expected
    public Rule(String name, String description) {
              ^
1 error

Compilation exited abnormally with code 1 at Thu Mar 22 19:58:39