使用随机访问文件

import java.io.File;

import java.io.IOException;

import java.io.RandomAccessFile;
/*
nowjava - 时代Java 提 供
*/


public class Main {

  public static void main(String[] args) throws Exception {

    try {

      File f = new File("filename");

      RandomAccessFile raf = new RandomAccessFile(f, "rw");


      // Read a character

      char ch = raf.readChar();


      // Seek to end of file

      raf.seek(f.length());


      // Append to the end/*时 代 J a v a - N o