java中的数据流

主要介绍了java中几种相关的数据流

字节流类：InputStream和OutputStream

字节流提供了处理字节的输入/输出方法，如在读写二进制数据时就要使用字节流。顶层的是两个抽象类是：InputStream(输入流)和OutputStream(输出流)。这两个抽象类派生出来的具体子类提供了读写各种不同设备如磁盘文件的功能。

Hello World（文章编辑范本）

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