java - How to create a singleton class using enum -

i trying create singleton class in java. best available solution java5 , above versions seems using enum. not sure how convert class singleton class using enum. following simplified class:

public class employee {     private int id;     private string name;     public employee() {}     public int getid() {       return id;     }    public void setid( int id ) {        this.id = id;     }     public string getname() {        return name;     }     public void setname( string name ) {       this.name = name;     } } 

when searched answers in net found following code:

public enum easysingleton{    instance; } 

but class variables , methods? not sure how implement this. know can provide methods enum variables go? on appreciated.

p.s.: please don't debate if singleton evil or anti-pattern. curious on how create singleton using enum.

the differences between class , enum not big. changed first line of code public enum instead of public class , added name of instance.

public enum employee { // changed "class" "enum"     instance; // added name of (single) instance     private int id;     private string name;     employee() {} // removed "public"    public int getid() {       return id;     }    public void setid( int id ) {        this.id = id;     }     public string getname() {        return name;     }     public void setname( string name ) {       this.name = name;     } } 

please keep in mind, singeltons, enum instances, static things might hinder later on, if want run code several times in 1 vm. consider creating instance of employee in main class , pass through application.

beside that, enums have other special features:

• you cannot extend class (only implements)
• some predefined methods (like static values() , getname()) available
• constructors can package private, or private