use relational operators in switch

Question

Is there a way to use relational operators (<,<=,>,>=) in a switch statement?

int score = 95;

switch(score)  {
   case (score >= 90):
      // do s         


        

Answer 1

No you can not.
From jls-14.11

The type of the Expression must be char, byte, short, int, Character, Byte, Short, Integer, String, or an enum type (§8.9), or a compile-time error occurs.  

Relational operators (<,<=,>,>=) results in boolean and which is not allowded.

All of the following must be true, or a compile-time error occurs:

• Every case constant expression associated with a switch statement must be assignable (§5.2) to the type of the switch Expression.

• No two of the case constant expressions associated with a switch statement may have the same value.

• No switch label is null.

• At most one default label may be associated with the same switch statement.