.java文件的ANSI编码转换为UTF-8编码

.java文件的ANSI编码转换为UTF-8编码，如下：

/* * 创建于：2012-09-07 *  * 功能：转换ANSI【JAVA中GBK编码】编码的.java源文件为UTF-8格式，未处理异常，运行前确认目录存在，且原编码格式为ANSI *  * @author bwgang */package bwgang;import java.io.*;import java.util.Vector;public class AnsiToUtf8 {public static void main(String[] args) throws UnsupportedEncodingException, IOException {ReadFileName tmp=new ReadFileName();Vector<String> vec=tmp.FileNameOftype("E:\\workspace\\Interface_JAVA\\src", ".java");for (int i=0;i<vec.size(); i++){System.out.println(vec.get(i));change(vec.get(i));}}public static void change(String filepath) throws UnsupportedEncodingException, IOException{BufferedReader buf = null;OutputStreamWriter pw=null;String str = null;String allstr="";//用于输入换行符的字节码byte[] c=new byte[2];        c[0]=0x0d;        c[1]=0x0a;        String t=new String(c);                buf=new BufferedReader(new InputStreamReader(new FileInputStream(filepath), "GBK"));while((str = buf.readLine()) != null){allstr=allstr+str+t;}buf.close();pw =new OutputStreamWriter(new FileOutputStream(filepath),"UTF-8");pw.write(allstr); pw.close();}}class ReadFileName {//存储遍历获取的所有文件名private  Vector<String> filelist = new Vector<String>(); //遍历指定路径下的所有文件//以ArrayList存储于filelist中private  void RefreshFileList(String strpath) {         File dir = new File(strpath);         File[] files = dir.listFiles();                         if (files == null)             return;         for (int i = 0; i < files.length; i++) {             if (files[i].isDirectory()) {                 RefreshFileList(files[i].getAbsolutePath());             } else {                 //String strFileName = files[i].getAbsolutePath().toLowerCase();                             filelist.add(files[i].getAbsolutePath());                                }             }      }      //过滤当前目录下的指定后缀名的文件     //返回Vector    public  Vector<String> FileNameOftype(String strpath2,String filetype){    String strfilename=new String();    Vector<String> filelistofjava= new Vector<String>();         //读取指定路径下的所有文件    RefreshFileList(strpath2);    for (int i = 0; i < filelist.size(); i++) {    strfilename=filelist.get(i).toString();    strfilename=strfilename.substring(strfilename.length()-5, strfilename.length());        if (strfilename.equals(filetype)) {    filelistofjava.add(filelist.get(i));            }        }    return filelistofjava;    }}