constant expression required in switch with string

Question

I have declared this enum class:

public enum class RoleName {
    Worker,
    Boss
}

which I want to use it in a switch / case

switch (requestRole.getName()) {
    case RoleName.Worker.name():

but I have this compilation error

constant expression required 

and if I remove class I got this IntelliJ IDEA error: 'class' keyword is expected after 'enum;

Answer 1

Two mistakes here:

1. The definition of the enum shouldn't have class in it. As a rule of thumb, the constants should be uppercase.

   enum RoleName {
       WORKER,
       BOSS;
   }
   

2. RoleName.Worker.name() isn't allowed as a case expression since it's not a constant expression. You could transform requestRole.getName() into a RoleName and use it as a switch expression.

   switch (RoleName.valueOf(requestRole.getName())) {
       case WORKER: /* ... */ break;
   }