什么是DataOutputStream类和ObjectOutputStream的区别呢？ [英] What's the difference between DataOutputStream and ObjectOutputStream?

问题描述

我在学习如何用Java Socket编程。我见过的客户端/服务器应用程序的例子有一些使用 DataOutputStream类，和一些使用的ObjectOutputStream 。

I'm learning about socket programming in Java. I've seen client/server app examples with some using DataOutputStream, and some using ObjectOutputStream.

什么是两者之间的区别是什么？

What's the difference between the two?

有没有性能上的差异？

推荐答案

的DataInput / OutputStream的执行通常更好，因为它更简单。它只能读/写primtive类型和字符串。

DataInput/OutputStream performs generally better because its much simpler. It can only read/write primtive types and Strings.

的ObjectInput / OutputStream中可以读/写任何对象类型是和原语。这是效率较低，但更容易使用，如果你想发送复杂的数据。

ObjectInput/OutputStream can read/write any object type was well as primitives. It is less efficient but much easier to use if you want to send complex data.

我会假设对象*流是最好的选择，直到你的知道的，它的性能是一个问题。

I would assume that the Object*Stream is the best choice until you know that its performance is an issue.

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