java实现a == 1 && a ==2 && a == 3

/**
 * @description: 通过利用Integer的缓存机制，修改缓存的值，将缓存2和3的位置都修改为1,实现1 == 2 == 3
 * @author: chengchangxin
 * @date: 2024/6/4 上午10:15
 **/
private static void test7() throws NoSuchFieldException, IllegalAccessException {
    Class cache = Integer.class.getDeclaredClasses()[0];
    Field c = cache.getDeclaredField("cache");
    c.setAccessible(true);
    //取出缓存数组
    Integer[] array = (Integer[]) c.get(cache);
    // array[129] is 1
    array[130] = array[129];
    // Set 2 to be 1
    array[131] = array[129];
    // Set 3 to be 1
    Integer a = 1;
    if(a == (Integer)1 && a == (Integer)2 && a == (Integer)3){
        System.out.println("实现1 == 2 == 3");
    }
}