Java语言的输入输出功能是十分强大而灵活的，美中不足的是看上去输入输出的代码并不是很简洁，因为你往往需要包装许多不同的对象。在Java类库中，IO部分的内容是很庞大的，因为它涉及的领域很广泛:标准输入输出，文件的操作，网络上的数据流，字符串流，对象流，zip文件流....本文的目的是为大家做一个简要的介绍。-Java language input and output functions are very powerful and flexible, fly in the ointment is the input and output of the code seems not very simple, because you often need to package a number of different objects. In the Java class libraries, IO part of the content is huge, because it involves a very wide range of areas: the standard input and output, file operations, network data stream, string streams, object streams, zip file stream ... . The purpose of this paper is a brief introduction to you.