Question

目前,我正在撰写一份使用BufferedWriter制作数份记录文档的申请。然而,在进行欺骗时,我想写的是系统,而不是档案。图一

log = new BufferedWriter(new FileWriter(tokenizerLog));

:

BufferedWriter log = new BufferedWriter(new OutputStreamWriter(System.out));
log.write("Log output
");

as opposed :

System.out.println("log output")

新的<条码>OutputStreamWriter 备选办法尚未奏效。我如何改变布图德韦里建筑商内部的目的,从档案转向标准。由于我有数份日志,我将使用系统书写。在任何地方,把产出改变为档案,这实际上是一种选择。

Answer 1

你的做法确实奏效,你只是想弄清产出:

try {    
  BufferedWriter log = new BufferedWriter(new OutputStreamWriter(System.out));

  log.write("This will be printed on stdout!
");
  log.flush();
}
catch (Exception e) {
  e.printStackTrace();
}

The both OutputStreamWriter and PrintWriter are Writer cases sobre You can Just do such as:

BufferedWriter log;

Writer openForFile(String fileName) {
  if (fileName != null)
    return new PrintWriter(fileName);
  else
    return new OutputStreamWriter(System.out);
}

log = new BufferedWriter(openForFile(null)); //stdout
log = new BufferedWriter(openForFile("mylog.log")); // using a file

不管怎样,这只是给你这个想法。

Answer 2

由于你提到这是伐木,你可能想看像标志4j那样使用一个伐木图书馆。这使你只改变组合档案,从而改变标识的目的地(无论是原木档案还是ole)。

友情链接