FileReader和FileInputStream的區別

1.FileReader和FileInputStream的區別:spa

  FileReader、FileWriter處理的是文本文件。code

  FileInputStream/FileOutputStream是繼承InputStream/OutputStream的文件讀寫流,用於讀寫任何文件。對象

 

2.FileReader與BufferedReader的區別:blog

  BufferedReader是一行行讀取。某些狀況下咱們只須要一行的數據,很方便。經過對象的readLine方法,能夠獲取一行文本。繼承

   1)簡單用法:it

    @Test
    public void testMyTest(){
        try {
            Reader in = new FileReader("c://logFile.txt");
            BufferedReader br = new BufferedReader(in);
            String line = br.readLine();
            System.out.println(line);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    運行結果:io

這是第一行的文本

 

2)複雜用法:class

    @Test
    public void testMyTest(){
        try {
            Reader in = new InputStreamReader(new FileInputStream(new File("c://logFile.txt")) , "GBK");
            BufferedReader br = new BufferedReader(in);
            String line = br.readLine();
            System.out.println(line);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

結果同樣的test

相關文章
相關標籤/搜索