How to copy directories with its subdirectories to new location ?

public static void main(String[] args) {

  File srcFolder = new File("c:\\shaan");

  File destFolder = new File("c:\\shaan-new");

  // make sure source exists

  if(!srcFolder.exists()) {

    System.out.println("Directory does not exist.");

    System.exit(0);

  } else {

    try {

      copyFolder(srcFolder,destFolder);

    } catch(IOException e) {

      e.printStackTrace();

      System.exit(0);

    }

  }

  System.out.println("Done");

} 

/**** copyFolder method using recursion ****/

public static void copyFolder(File src, File dest) throws IOException {

  if(src.isDirectory()) {

    // if directory not exists, create it

    if(!dest.exists()) {

       dest.mkdir();

       System.out.println("Directory copied from " + src + " to " + dest);

    }

  

    // list all the directory contents

    String files[] = src.list();

    for (String file : files) {

      // construct the src and dest file structure

      File srcFile = new File(src, file);

      File destFile = new File(dest, file);

      // recursive copy

      copyFolder(srcFile,destFile);

    }

  } else {

    // if file, then copy it

    // Use bytes stream to support all file types

    InputStream in = new FileInputStream(src);

    OutputStream out = new FileOutputStream(dest);

    byte[] buffer = new byte[1024];

    int length;

    // copy the file content in bytes

    while ((length = in.read(buffer)) > 0) {

      out.write(buffer, 0, length);

    }

    in.close();

    out.close();

    System.out.println("File copied from " + src + " to " + dest);

  }

}