Forums
Frequent submitter Capybara James sends us this simple snippet, which highlights that even when you have the lovely convenience of Optional types, you can use them wrong.
Jul 26if (StringUtils.hasLength(dto.getAssetModelUUID())
// Other conditions
) {
return Optional.ofNullable(dto);
}
Flat-file style databases were designed to fit the constraints of the systems they were running on. You specify your schema in terms of "how many characters in a file we use to store this data", meaning something like this: JOHN SMITH 12343rd StAnytown PA12345 is read in my knowing that the first name field is 8 characters wide, the last name field is 8 characters wide, the street number is 4 digits, and so on.
It's also a terrible schema, and woe to anyone with a long name. But many a mainframe had a similar schema.