I want to nest some enums. The object i\'m representing are Flags, with a type, and a value. There are a discrete number of types, and each type has a distinct set of possible v
You cannot have a number as an enum. It has to be an identifier.
You can do this
interface Flag {
String getType();
int getValue();
enum A implements Flag{
one, two, three;
String getType() { return getClass().getSimpleName(); }
int getvalue() { return ordinal()+1; }
}
enum B implements Flag{
four, five, six;
String getType() { return getClass().getSimpleName(); }
int getvalue() { return ordinal()+4; }
}
}
Flag f = Flag.A.one;
However a simpler option may be
enum Flag {
A1, A2, A3, B4, B5, B6;
public String getType() { return name().substring(0,1); }
public int getValue() { return name().charAt(1) - '0'; }
}
Flag f = Flag.A1;