【Java基础】 实现简单的文件拷贝

1.字节流转换为字符流使用 实现文件拷贝

 
   static void stream2Char() throws Exception {
        String infilePath = "F:\\javaSeProjects\\OutPutStream.txt";
        String outFulePath = "F:\\javaSeProjects\\testFile.txt";

        InputStream inputStream = new FileInputStream(infilePath);
        OutputStream outputStream = new FileOutputStream(outFulePath);

        Reader reader = new InputStreamReader(inputStream);
        Writer writer = new OutputStreamWriter(outputStream);
        char[] buffer = new char[1024];
        int len = -1;
        while ((len = reader.read(buffer)) != -1) {
            writer.write(buffer, 0, len);
        }
        writer.close();
        reader.close();
        ;

    }

2.使用Files 工具类中自由的方法实现拷贝文件

    static void useCopy() throws Exception, IOException{
        String infilePath = "F:\\javaSeProjects\\OutPutStream.txt";
        String outFulePath = "F:\\javaSeProjects\\testFile.txt";
        Path path = Paths.get(new File(infilePath).toURI());
        Files.copy(path, new FileOutputStream(outFulePath));

    }

主要是应用过程中，查看接口，以及源码的实现。在这个感觉开源还是好，比OC强太多了。