基础知识 Java 文件读取 行读 字节读取

        //字节流 行读取 String
        File file = new File("C:\Users\Administrator\Desktop\test.txt");

        BufferedReader bufferedReader = new BufferedReader(new FileReader(file));

        String tempString = null;
        while( (tempString = bufferedReader.readLine()) != null){
            System.out.print(tempString);
        }

        bufferedReader.close();


        //字节读取   int
        FileInputStream fileInputStream = new FileInputStream(("C:\Users\Administrator\Desktop\test.txt"));
        InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, "UTF-8");

        int temp;
        while((temp = inputStreamReader.read()) != -1){
            System.out.print((char)temp);
        }
        inputStreamReader.close();

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　　　　　　基础