多级文件夹的复制

package JB2015;

import java.io.*;

public class BLG {
    public static void main(String[] args) throws IOException {
        File srcFile=new File("D:\幽姿不入少年场");
        File destFile=new File("D:\jdg");
        copyFloder(srcFile,destFile);

    }
    public static void copyFloder(File srcFile,File destFile) throws IOException {
         if (srcFile.isDirectory()){ //判断源文件为目录
             String srcFilename= srcFile.getName();

              File newFolder=new File(destFile,srcFilename);
              if (!newFolder.exists()){
                  newFolder.mkdir();
              }
              File[] listFile=srcFile.listFiles();

             assert listFile != null;
             for (File file:listFile){
                   copyFloder(file,newFolder);//递归调用
              }
         }
         else {
             File newFile=new File(destFile,srcFile.getName());
             copyFile(srcFile,newFile);
         }
    }
    public  static void copyFile(File srcFile,File file) throws IOException {
        BufferedInputStream bi=new BufferedInputStream(new FileInputStream(srcFile));
        BufferedOutputStream bo=new BufferedOutputStream(new FileOutputStream(file));
        byte[] bytes=new byte[1024];
        int len;
        while ((len= bi.read(bytes))!=-1){
        bo.write(bytes,0,len);
        bo.flush();
        }
         bi.close();
        bo.close();
    }
}