java文件通道复制

/**

    * 使用文件通道的方式复制文件

    * 

    * @param s

    *            源文件

    * @param t

    *            复制到的新文件

    */

    public void fileChannelCopy(File s, File t) {

        FileInputStream fi = null;

        FileOutputStream fo = null;

        FileChannel in = null;

        FileChannel out = null;

        try {

            fi = new FileInputStream(s);

            fo = new FileOutputStream(t);

            in = fi.getChannel();//得到对应的文件通道

            out = fo.getChannel();//得到对应的文件通道

            in.transferTo(0, in.size(), out);//连接两个通道，并且从in通道读取，然后写入out通道

        } catch (IOException e) {

            e.printStackTrace();

        } finally {

            try {

                fi.close();

                in.close();

                fo.close();

                out.close();

            } catch (IOException e) {

                e.printStackTrace();

            }

        }

    }