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hashMap与hashTable的区别-12212886-51CTO博客

 6 years ago
source link: http://blog.51cto.com/12222886/2068459
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    首先请先阅读这两个的源码。一、hashMap、hashTable都是Map接口的实现类，但是hashMap类继承自抽象类abstractMap类，hashTable继承自Dictionary类，该类在jdk中这样描述：可见该类已经过时。二、hashTable里面的方法都是同步的，实现同步的方法是synchronized，hashMap是非同步的，但也

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