复制文件详解编程语言

  public static void copyTo(String srcName, String targetName) throws IOException { 
        File file = new File(srcName); 
        if (file.exists()) { 
            BufferedInputStream inBuff = null; 
            BufferedOutputStream outBuff = null; 
            try { 
                // 新建文件输入流并对它进行缓冲 
                inBuff = new BufferedInputStream(new FileInputStream(srcName)); 
 
                // 新建文件输出流并对它进行缓冲 
                outBuff = new BufferedOutputStream(new FileOutputStream(targetName)); 
 
                // 缓冲数组 
                byte[] b = new byte[1024 * 5]; 
                int len; 
                while ((len = inBuff.read(b)) != -1) { 
                    outBuff.write(b, 0, len); 
                } 
                // 刷新此缓冲的输出流 
                outBuff.flush(); 
            } finally { 
                // 关闭流 
                if (inBuff != null) 
                    inBuff.close(); 
                if (outBuff != null) 
                    outBuff.close(); 
            } 
        } 
    }