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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		UserRole userRole = UserRole.forDisplayNameIgnoreCase ( "seller" ) ;
  13. 		System.out.println( "userRole.toString() = " + userRole ) ;
  14. 	}
  15. }
  16.  
  17. enum UserRole
  18. {
  19.     ADMIN ( "Admin" ) ,
  20.     SELLER ( "Seller" ) , 
  21.     BIDDER ( "Bidder" ) ;
  22.  
  23.     private final String displayName ;
  24.  
  25.     // Constructor 
  26.     UserRole ( String displayName ) 
  27.     {
  28.         this.displayName = displayName ;
  29.     }
  30.  
  31.     public String getDisplayName() 
  32.     { 
  33.         return this.displayName ; 
  34.     }
  35.  
  36.     public static UserRole forDisplayNameIgnoreCase ( final String desiredDisplayName ) 
  37.     {
  38.         for ( UserRole userRole : UserRole.values() )
  39.         {
  40.             if ( userRole.getDisplayName().equalsIgnoreCase( desiredDisplayName ) )
  41.             {
  42.                 return userRole ;
  43.             }
  44.         }
  45.         throw new IllegalArgumentException( "Unknown display name" ) ;  // Or return an `Optional< UserRole >`. The Optional would be my preference. 
  46.     }
  47.  
  48. }
Success #stdin #stdout 0.12s 52040KB
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Standard input is empty
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userRole.toString() = SELLER
https://ideone.com/OGBpRo
language:
Java (HotSpot 12)
created:
2 years ago
visibility:
public

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