Java I/O

This presentation gives a good overview of Java I/O, from which I have learned:

• FileInputStream/FileOutputStream: for sequential I/O and simple to buffer
• RandomAccessFile: for full random-access
• FileChannel: adds support for NIO byte buffers
• MappedByteBuffer: for memory-mapped I/O
• Buffering: for instance, use BufferedOutputStream for buffering FileOutputstream
• Forcing I/O, e.g. flush() or FileChannel.force(), equals to the "fsync" system call
  
• No direct I/O in Java