“ - ”在枚举java中分隔字符串

Question

I have a problem in creating an enumeration in Java using "-"-separated strings:

public enum CipherList{

   RSA-MD5,AES128-SHA,AES256-SHA;
}

I am getting compilation errors.

Answer 1

The - symbol may not be used in an identifier in Java. (How would RSA-MD5 be parsed if RSA and MD5 happened to be integers?)

I suggest you use

RSA_MD5, AES128_SHA, AES256_SHA;

according to the Java coding conventions for constants ^{related question} .

Answer 2

Enum constants have to use valid Java identifiers, and identifiers are not allowed to contain dashes.

You could, for example, replace dashes with underscores:

public enum CipherList{
   RSA_MD5, AES128_SHA, AES256_SHA;
}

Answer 3

If you want to use exact strings using enums you can use following approach.

enum CipherList{
   CHIP_ONE("RSA-MD5"),CHIP_TWO("AES128-SHA"),CHIP_THREE("AES256-SHA");
   private String code;
   CipherList(String code) {
      code= code;
   }
   String getcode() {
      return code;
   } 
}