[填空题] 请在下列程序的空白处,填上适当的内容:  Import java. awt. *;  Import java. util. *;  Class BufferTest{  Public st

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[填空题] 请在下列程序的空白处,填上适当的内容:  Import java. awt. *;  Import java. util. *;  Class BufferTest{  Public static void main(string args[])  Throws IOException{  FileOutputStream unbuf=  new FileOutputStream(“test.one”) ;  BufferedOutputStream buf=  new 【11】 (new FileOutputStream(“test.two”));  System.out.println  (“write file unbuffered: ” + time(unbuf) + “ms”);  System.out.println  (“write file buffered: ” + time(buf) + “ms”);  }  Static int time (OutputStream os)  Throws IOException{  Date then = new Date();  for (int i=0; i<50000; i++){  os.write(1);  }  }  os.close();  return(int)(()new Date()).getTime() - then.getTime());  }  

参考答案:

BufferedOutputStream

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