try        {                    FileInputStream in = new FileInputStream("e:/TextRw.txt");            FileOutputStream out = new FileOutputStream("e:/2012412440张伟.txt");            int i =0;                        byte[] b1 = new byte[1024];            while((i=in.read(b1))>0)            {                out.write(b1,0,i);            }            out.close();            in.close();            System.out.println("文件复制完成");                    }         catch (FileNotFoundException e)        {                    e.printStackTrace();        }