In Java, you can read and write files using the java.io or java.nio packages. File operations mainly involve "processing character (text) data" and "processing binary data (such as images or audio)." ...

在Java编程中，文件的读写操作是非常常见且重要的功能。而FileInputStream和FileOutputStream是Java里用于处理文件读写的两个关键类。通过这两个类，我们可以实现对文件的字节级别的读写操作。