RandomAccessFile乱码问题

package fengke.filedemo;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.RandomAccessFile;
/**
 * RandomAccessFileDemoChina乱码问题
 * @author 锋客
 * 内容：
 *    String s=new String(raf_open.readLine().getBytes("ISO-8859-1"),"utf-8");
 */

public class RandomAccessFileDemoChina {

public static void main(String[] args) throws IOException {
  //写入
  File file=new File("e:\\luanma.txt");
  file.createNewFile();
  try {
   RandomAccessFile raf=new RandomAccessFile(file, "rw");
   raf.writeUTF("晋城,锋客到此一游！");
   raf.close();
  } catch (FileNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  //输出
  RandomAccessFile raf_open=new RandomAccessFile(file, "r");
  System.out.println("乱码："+raf_open.readLine());
  raf_open.seek(0);//必须规到0处
  //readLine的方式会自动将编码变成ISO-8859-1，后一个是自己的文本编码格式
  String s=new String(raf_open.readLine().getBytes("ISO-8859-1"),"utf-8");
  System.out.println(s);
 }

}