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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. enum FlippableMember {
  8. 	A(Flippable.A), B(Flippable.B), Y(Flippable.Y), Z(Flippable.Z);
  9. 	private Flippable value;
  10.  
  11.   private FlippableMember(Flippable value) {
  12.     this.value = value;
  13.   }
  14.  
  15.   public Flippable value() {
  16.     return value;
  17.   }
  18. }
  19.  
  20. enum Flippable {
  21.   A (FlippableMember.Z), B (FlippableMember.Y), Y (FlippableMember.B), Z (FlippableMember.A);
  22.  
  23.   private FlippableMember opposite;
  24.  
  25.   private Flippable(FlippableMember opposite) {
  26.     this.opposite = opposite;
  27.   }
  28.  
  29.   public Flippable flip() {
  30.     return opposite.value();
  31.   }
  32. }
  33.  
  34. /* Name of the class has to be "Main" only if the class is public. */
  35. class Ideone
  36. {
  37. 	public static void main (String[] args) throws java.lang.Exception
  38. 	{
  39. 		Flippable foo = Flippable.B;
  40. 		System.out.println(foo);
  41. 		System.out.println(foo.flip());
  42.  
  43. 	}
  44. }
  45.  
Success #stdin #stdout 0.09s 320576KB
comments (?)
stdin 
Standard input is empty
stdout 
B
null
https://ideone.com/gVvgW4
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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