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  1. import java.lang.reflect.Field;
  2.  
  3. class PequalNP
  4. {
  5. 	public static void main (String[] args) throws java.lang.Exception
  6. 	{
  7.         Class cache = Integer.class.getDeclaredClasses()[0];
  8.         Field c = cache.getDeclaredField("cache");
  9.         c.setAccessible(true);
  10.         Integer[] array = (Integer[]) c.get(cache);
  11.         array[132] = array[133];
  12.  
  13.         System.out.printf("%d",2 + 2);
  14. 	}
  15. }
Success #stdin #stdout #stderr 0.13s 34340KB
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stdin
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Standard input is empty
stdout
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5
stderr
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WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by PequalNP (file:/home/p20VTP/tested.zip) to field java.lang.Integer$IntegerCache.cache
WARNING: Please consider reporting this to the maintainers of PequalNP
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/tTYEiK
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
public

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