如何在Eclipse中批量转换Java源代码文件的编码格式从GBK到UTF-8

import java.io.File;
import java.io.IOException;
import java.util.Collection;

import org.apache.commons.io.FileUtils;

public class XXXX {
    public static void main(String[] args) throws IOException {
        //GBK编码格式源码路径 
        String srcDirPath = "D:\eclipse\eclipse\workspace\News\src\com\ischoolbar\programmer"; 
        //转为UTF-8编码格式源码路径 
        String utf8DirPath = "D:\eclipse\eclipse\workspace\News\src\com\ischoolbar\programmer"; 
        //获取所有java文件 
        Collection javaGbkFileCol =  FileUtils.listFiles(new File(srcDirPath), new String[]{"java"}, true); 
                
        for (File javaGbkFile : javaGbkFileCol) { 
              //UTF8格式文件路径 
              String utf8FilePath = utf8DirPath+javaGbkFile.getAbsolutePath().substring(srcDirPath.length()); 
               //使用GBK读取数据，然后用UTF-8写入数据 
              FileUtils.writeLines(new File(utf8FilePath), "UTF-8", FileUtils.readLines(javaGbkFile, "GBK"));        
        }
    }
}