从源码包中抽取java文件(保持包路径)

package com.yangxiutian;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

public class PackageUtil
{
    public static void copyFile(String tarPath, File srcPath)
            throws IOException
    {
        File tarPathFile = new File(tarPath);//目标虚拟路径
        File tarFile;//目标文件
        if (!tarPathFile.exists())
        {
            tarPathFile.mkdirs();
            tarFile = new File(tarPath + srcPath.getName());
            tarFile.createNewFile();
            InputStream is = new FileInputStream(srcPath);
            OutputStream os = new FileOutputStream(tarFile);
            byte[] buff = new byte[1024];
            int reads = 0;
            while ((reads = is.read(buff)) != -1)
            {
                os.write(buff, 0, reads);
            }
            os.close();
            is.close();
        }
    }
    
    /**
     *  遍历java文件
     */
    public static void listAllFile(File root, List<File> allFiles)
    {
        File[] files = root.listFiles();
        for (File temp : files)
        {
            if (temp.isDirectory())
            {//是目录，递归调用
                listAllFile(temp, allFiles);
            }
            else
            {
                if (temp.getName().endsWith(".java"))
                {
                    allFiles.add(temp);
                }
            }
            
        }
    }
    
    public static void main(String[] args) throws IOException
    {
        String basePath = "C:\\Documents and Settings\\Administrator\\桌面\\package\\";
        String path;//路径，不包含基路径
        String srcPath = "C:\\Documents and Settings\\Administrator\\My Documents\\Downloads\\axiom-1.2.11-source-release\\axiom-1.2.11\\";
        File root = new File(srcPath);//
        List<File> list = new ArrayList<File>();
        listAllFile(root, list);
        for (File temp : list)
        {
            BufferedReader br = new BufferedReader(new FileReader(temp));
            while (true)
            {//取出package信息
                String line = br.readLine();
                if (line.contains("package "))
                {
                    path = line.replace("package ", "").replace(".", "/")//路径org/apache/axiom/testutils/io/ 前面不带后面带 
                            .replace(";", "/");
                    copyFile(basePath + path, temp);//复制文件
                    System.out.println(basePath + path);
                    break;
                }
            }
        }
        System.out.println(list.size() + "个java文件");
    }
}