Java Collection Class Framework(understanding the relationships and differences between framework diagrams, HashMap, ArrayList, HashSet, etc., where HashMap's storage mechanism is almost always asked).
As long as the non-interference requirement is satisfied, we can execute parallel operations safely and with predictable results even on non-thread-safe sources such as ArrayList.
(Iterating over an ArrayList is technically faster, but unless you're doing something really performance-sensitive, you shouldn't worry about this-- they're both constants.).
以上方法也适用于ArrayList.
You may also find the following methods in ArrayList.
Vector和ArrayList是类似的。
Vector and ArrayList are very similar.
有的时候ArrayList更好一些;.
Sometimes ArrayList is better;
Arraylist<e>中E称为类型变量.
The E in"class ArrayList<E>" is defined as a type variable.
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