Automating verification of text file contents format?

01FILENO00012 CRD        20250212015407CRD TEXTFIL1 DAT INTERNALD & NUMBER1              00320250211                                            |

This is one record/line in my text file. I am trying to verify if the format of file is correct.
Now, the record should have exact number of whitespaces and some words never change.

Now, “01FILENO000012”, “CRD” , “TEXTFILE1” are static and never change … so i want to match these exactly in brackets?

/           System.out.println("Length of line is: " + line.length() + " " + line);
            if (line.startsWith("01") && line.trim().matches(
                    "(01FILENO00012)\s+(CRD)\s{8}[0-9]{14}(CRD)\s+(TEXTFIL1)\s+(DAT)\s+(INTERNALD)\s+(&)\s+(NUMBER1)\s{14}[0-9]{11}\s{44}[|]")) {
                {
                    System.out.println("This is header record: " + line + " and its has correct format");
                }

Please help me write correct Java regex so that i can automate file format verification?

Source: Read More