Java Enumeration (ii): That is, the example in the Java enumeration (a) to expand

/* Knowledge Points: Enumerations      enumerations are a new type of data that is provided starting from Java5, a special class, which is the collection definition format for multiple constant objects:     [modifier]  enum  enum class name     {         constant a,  constant B,   Constants c;    }*///Define enumeration Enum weekday{    monday, tuesday,  wednesday, thursday, friday, saturday, sunday;    // The Monday in the enumeration type is equivalent to the original: Public static final weekday monday = new weekday ();} class employees{    private weekday restday; //which day of the week is rested (data type Weekday)     public weekday getrestday ()     {         return restday;    }    public void  setrestday (weekday restday)  //data type is weekday    {         this.restday = restday;    }}public class enumerateexample{     Public static void main (String[] args)      {         employees e = new employees ();  //Create an Employee object          e.setrestday (weekday.wednesday);  //set the break time by the class name, object,          weekday restday = e.getrestday ();  // Receive values with variable restday of type weekday                  if (restday == weekday.saturday | |  restday == weekday.sunday)         {             system.out.println ("Weekend break ...");         }        else        {             System.out.println ("Monday to Friday Rest ...");         }    }}/* Weekday byte-code file contents (post-compilation with Java bytecode counter-compile tool): final class weekday extends enum // The custom Weekday enumeration class is inherited from the Java.lang in the underlying enum{    public static final weekday  monday;    public static final weekday tuesday;     public static final weekday wednesday;    public static  final weekday thursday;    public static final weekday  Friday;    public static final Weekday Saturday;     public static final weekday sunday;    private static  final Weekday  $VALUES [];     public static weekday[] values ()     {         return  (weekday[]) $VALUES. Clone ();    }     public static weekday valueof (string s)     {         return  (Weekday) enum.valueof (weekday, s);     }    private weekday (string s, int i)     {         super (s, i);    }     static     {        Monday =  New weekday ("Monday",  0);         tuesday = new  weekday ("Tuesday",  1);         wednesday = new  weekday ("Wednesday",  2);         thursday = new weekday ("Thursday",  3);         friday = new weekday ("Friday",  4);         saturday = new weekday ("Saturday",  5);         sunday = new weekday ("Sunday",  6);          $VALUES  =  (new weekday[] {             Monday, Tuesday, Wednesday, Thursday,  friday, saturday, sunday        });     } }*/

Java Enumeration (ii): That is, the example in the Java enumeration (a) to expand