Como no Java fazer 2 + 2 é igual a 5. https://codegolf.stackexchange.com/questions/28786/write-a-program-that-makes-2-2-5/28818#28818

IgualA5.java

import java.lang.reflect.Field;

public class IgualA5 {
  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);
  }
}