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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.lang.reflect.*;
  6. import java.io.*;
  7.  
  8. /* Name of the class has to be "Main" only if the class is public. */
  9. class Ideone
  10. {
  11. 	static class FinalFieldExample { 
  12.         final int x;
  13.         static FinalFieldExample f;
  14.  
  15.         public FinalFieldExample() {
  16.         	anywhere(this);
  17.             x = 3; 
  18.         } 
  19.  
  20.         static void writer() {
  21.             f = new FinalFieldExample();
  22.         } 
  23.  
  24.         static void anywhere(FinalFieldExample anywhere) { System.out.println(anywhere.x); }
  25.     }
  26. 	public static void main (String[] args) throws java.lang.Exception
  27. 	{
  28. 		FinalFieldExample.writer();
  29.  
  30. 		FinalFieldExample.anywhere(FinalFieldExample.f);
  31.  
  32. 		Field f = FinalFieldExample.class.getDeclaredField("x");
  33. 		f.setAccessible(true);
  34. 		f.set(FinalFieldExample.f, 54);
  35. 		FinalFieldExample.anywhere(FinalFieldExample.f);
  36. 	}
  37. }
Success #stdin #stdout 0.05s 27880KB
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0
3
54
https://ideone.com/ieKmMz
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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