Java program serves as a lexical analyzer that validates a specific pattern within a given string. The validation is done based on predefined rules, and it checks if the input string conforms to a certain structure.
The provided Java program reads a string from the user and checks if it conforms to a specific pattern. The pattern rules are:
"" The string starts with one or more 'a' characters. Followed by a single 'd' character. Followed by zero or more 'b' characters. Ending with one or more 'c' characters.
Language: L={aa*db∗c+}