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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4. import java.lang.reflect.Field;
  5.  
  6. class Ideone
  7. {
  8.   static {
  9.     try {
  10.       Field VALUE = Integer.class.getDeclaredField("value");
  11.       VALUE.setAccessible(true);
  12.       VALUE.set(0, 3);
  13.     } catch (ReflectiveOperationException e) {
  14.       throw new Error(e);
  15.     }
  16.   }
  17.  
  18.   public static void main(String[] args) {
  19.     Integer a = 0;
  20.     System.out.println( a );
  21.   }
  22. }
Success #stdin #stdout #stderr 0.09s 48056KB
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stdin
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Standard input is empty
stdout
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3
stderr
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WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by Ideone (file:/home/UJNczm/tested.zip) to field java.lang.Integer.value
WARNING: Please consider reporting this to the maintainers of Ideone
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
https://ideone.com/vdjUDT
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
secret

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