Question

I would like to use the following constant:

final String ADD = "Add text";

However, my CheckStyle tool tells me that ‘ADD’ does not match the pattern '^[a-z][a-zA-Z0-9]*$'.

Could anyone please tell me what is wrong with ‘ADD’? Means '^[a-z][a-zA-Z0-9]*$' that every name has to start with a low character? Is there no other possibility?

Answer 1

^[a-z][a-zA-Z0-9]*$

This regex describes something which starts with lowercase and the remainder is composed of uppercase, lowercase, and numbers. (Examples: aVariable, variable, aNewVariable, variable7, aNewVariable7.)

If you want your field to be constant and static, use:

static final String ADD = "Add text";

Otherwise, use:

final String add = "Add text";