一個BufferedOutputStream包裹另一個BufferedOutputStream呢？

Question

一個BufferedOutputStream包裹另一個BufferedOutputStream呢？這個問題很簡單。但困惑。 如下面的代碼，

 OutputStream file = new FileOutputStream("test.txt"); 
     OutputStream buffer = new BufferedOutputStream(file); 
     BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(buffer);  //wrap buffer twice 
     OutputStream outputStream = new ObjectOutputStream(bufferedOutputStream); // wrap as ObjectOutputStream 
     BufferedOutputStream bufferedOutputStream1 = new BufferedOutputStream(outputStream); //wrap back as BufferedOutputStream 
     ObjectOutput output = new ObjectOutputStream(bufferedOutputStream1); 

Answer 1

怎麼樣？題？

如果你問是否引入了低效率，答案是'不'。代碼被優化以處理這種情況，或者更確切地說，傳輸大小> =緩衝區大小的情況。