renatoapcosta/java_bug.md

Created April 18, 2021 17:01

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Java Bug

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java_bug.md

Java Bug

2 + 2 = 5

import java.lang.reflect.Field;

public class Main {
  public static void main(String[] args) throws Exception{
    Class cache = Integer.class.getDeclaredClasses()[0];
    Field c = cache.getDeclaredField("cache");
    c.setAccessible(true);
    Integer[] array = (Integer[]) c.get(cache);
    array[132] = array[133];

    System.out.printf("%d",2+2);
    System.out.println();

  }
}