Nested interfaces for constants

[Ostin Night]

Dear java community,

I had interface that have big amount of constants of different types:

public interface ApplicationConrstants {
   String USER_CONSTANT_1 = "userConstant1 value";
   String USER_CONSTANT_2 = "userConstant2 value";
   String USER_CONSTANT_3 = "userConstant3 value";
 
   String BANK_CONSTANT_1 = "bankConstant1 value";
   String BANK_CONSTANT_2 = "bankConstant2 value";
}

I decided to create nested interfaces in this interface to collect similar constants in groups:

public interface ApplicationConrstants {
 
   interface UserConrstants {
      String CONSTANT_1 = "userConstant1 value";
      String CONSTANT_2 = "userConstant2 value";
      String CONSTANT_3 = "userConstant3 value";
   }
   interface BankConrstants {
      String CONSTANT_1 = "bankConstant1 value";
      String CONSTANT_2 = "bankConstant2 value";
   }
}

What do you think about this approach?

Thanks.

[Stefan Wagner]

Without context - I think there might be better ways, but we can't tell.

Perhaps interfaces, enumerations?

Or static final fields in User, Bank.
How much code uses these constants where and how?