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Update Java集合框架常见面试题.md

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Jasper 2019-07-05 18:03:43 +08:00
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docs/java/collection/Java集合框架常见面试题.md
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@ -95,7 +95,7 @@ public interface RandomAccess {
`Vector`类的所有方法都是同步的。可以由两个线程安全地访问一个Vector对象、但是一个线程访问Vector的话代码要在同步操作上耗费大量的时间。
`Arraylist`不是同步的，所以在不需要保证线程安全时时建议使用Arraylist。
`Arraylist`不是同步的，所以在不需要保证线程安全时建议使用Arraylist。
## 说一说 ArrayList 的扩容机制吧