在Java中讀取數據

Question

使用BufferedReader和BufferedInputStream有什麼區別？

Answer 1

顧名思義，一個用於讀取數據，另一個用於輸出數據。

Answer 2

A BufferedReader用於讀數字符數據。 A BufferedOutputStream用於寫入二進制數據。

任何類從Reader或Writer處理繼承與16位Unicode字符數據，而從類或InputStreamOutputStream inherting關心的是處理二進制數據。類InputStreamReader和OutputStreamWriter可用於在兩類數據之間進行橋接。

Answer 3

Bufferedreader以字符串的形式從文件中讀取數據。 BufferedOutputStream以字節寫入文件。的BufferedInputStream以字節爲單位讀取數據
樣本的BufferedReader：

try { 
     BufferedReader br = new BufferedReader(new FileReader(new File(your_file)); 
     while ((thisLine = br.readLine()) != null) { 
     System.out.println(thisLine); 
     } 
    } 

樣品的BufferedOutputStream：

//Construct the BufferedOutputStream object 
     bufferedOutput = new BufferedOutputStream(new FileOutputStream(filename)); 

     //Start writing to the output stream 
     bufferedOutput.write("Line 1".getBytes()); 
     bufferedOutput.write("\r\n".getBytes()); 
     bufferedOutput.write("Line 2".getBytes()); 
     bufferedOutput.write("\r\n".getBytes()); 

的BufferedInputStream讀取字節：
樣品 ：

//Construct the BufferedInputStream object 
     bufferedInput = new BufferedInputStream(new FileInputStream(filename)); 

     int bytesRead = 0; 


     while ((bytesRead = bufferedInput.read(buffer)) != -1) {     

      String chunk = new String(buffer, 0, bytesRead); 
      System.out.print(chunk); 
     }