the enum typle cannot be passed into function like the object reference in java? - 


object = new object();  method(object a);

if change value of in method, value of outside of method should changed. 

enum b = enum.something;  method(enum b);

if change value of b in method, value of b outside of method, found didn't change. don't know why? 

object = new object();  method(a); public void method(object a){         // operation on object  }

since passing object reference change reflect on actual object.

an enum type special data type enables variable set of predefined constants. variable must equal 1 of values have been predefined it. common examples include compass directions (values of north, south, east, , west) , days of week.  because constants, names of enum type's fields in uppercase letters.

enums constants meant keep state. public static final constants.


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