用java实现文本文档的ANSI编码转化为UTF-8

package cwj.bbb;

import java.io.*;

class StreamTest
{
	public static void main(String[] args) throws IOException
	{
		/*
		 * 文件由ANSI转化为UTF-8
		 * 需要用到流InputStreamReader和OutputStreamWriter
		 * 这两个流有charset功能
		 * */
		File srcFile = new File("/home/cwjy1202/hadoop/javaTest/dali09_seg_pos.txt");
		File destFile = new File("/home/cwjy1202/hadoop/javaTest/dali01_000_CWJ000.txt");
		InputStreamReader isr = new InputStreamReader(new FileInputStream(srcFile), "GBK"); //ANSI编码
		OutputStreamWriter osw = new OutputStreamWriter(new FileOutputStream(destFile), "UTF-8"); //存为UTF-8

		int len = isr.read();
		while(-1 != len)
		{

			osw.write(len);
			len = isr.read();
		}
		//刷新缓冲区的数据，强制写入目标文件
		osw.flush();
		osw.close();
		isr.close();
	}
}

如有不对，请指正，自己刚刚学习java，搞了好久才搞定！

用java实现文本文档的ANSI编码转化为UTF-8