HashMap引发的事故:jdk1.7和jdk1.8下的hash函数的不一样

what? 咱们先看一端代码。web JsonMapper jsonMapper = JsonMapper.nonDefaultMapper(); HashSet<String> objects = Sets.newHashSet(); for (int i = 0; i < 1000; i++) { Map<String, Object> map = new TreeMap<Strin
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