Am I correct in saying that a .Net Hashtable is not synchronized while a Java Hashtable is? And at the same time a Java HashMap is not synchronized and has better performance?
我说。net Hashtable不是同步的，而Java Hashtable是同步的，这是对的吗?与此同时，Java HashMap没有同步，性能更好吗?
I am rewriting a Java app that makes heavy use of HashMaps in C# and I would like to use a HashTable and ensure that the performance is basically equivalent.
我正在重写一个Java应用程序，它在c#中大量使用hashmap，我希望使用散列表，并确保性能基本相同。
2 个解决方案
#1
6
I think what you're asking is if HashMaps in Java and HashTables in C# act in roughly the same way and you're largely correct from a performance point of view. HashMaps as I recall do not complain if you insert duplicate keys whereas HashTable in C# will.
我认为您所要问的是，Java中的hashmap和c#中的HashTables是否大致相同，从性能的角度来看，基本上是正确的。我记得HashMaps不会抱怨如果你插入重复的键，而c#中的HashTable会。
#2
0
By default, .NET Hashtables are not synchronized, but you can create a synchronized wrapper around one, like so:
默认情况下，.NET Hashtables是不同步的，但是您可以围绕其中一个创建一个同步包装器，如下所示:
Hashtable myHash = Hashtable.Synchronized(new Hashtable());
#1
6
I think what you're asking is if HashMaps in Java and HashTables in C# act in roughly the same way and you're largely correct from a performance point of view. HashMaps as I recall do not complain if you insert duplicate keys whereas HashTable in C# will.
我认为您所要问的是，Java中的hashmap和c#中的HashTables是否大致相同，从性能的角度来看，基本上是正确的。我记得HashMaps不会抱怨如果你插入重复的键，而c#中的HashTable会。
#2
0
By default, .NET Hashtables are not synchronized, but you can create a synchronized wrapper around one, like so:
默认情况下，.NET Hashtables是不同步的，但是您可以围绕其中一个创建一个同步包装器，如下所示:
Hashtable myHash = Hashtable.Synchronized(new Hashtable());