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别拿 byte [] 数组作为 key | Junyu's Blog #15

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palexu opened this issue Feb 23, 2021 · 0 comments
Open

别拿 byte [] 数组作为 key | Junyu's Blog #15

palexu opened this issue Feb 23, 2021 · 0 comments
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palexu commented Feb 23, 2021

https://palexu.github.io/2017/06/28/2017-06-28-not-use-byte[]-as-key-of-hashmap/

byte[]数组作为key值，只是数组的地址的引用的hashcode，不能够根据byte[]数组的内容来，创建相应的hashcode，也就是所谓的索引key。所以，如果想用byte[]数组来作为map的key值的话，有三种方法： 将byte[]，先转化为string 将采用list 将byte[]自己包装，使用byte[]数组的内容来重写hashcode和equals方法
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