regex to match file names

Question

I have a java class and I want to read files which have names starting with "home-search-log.log". So I have written this code.

  File dir = new File("D:\\");
   File[] foundFiles = dir.listFiles(new FileFilter() {
    public boolean accept(File file) {

        return Pattern.compile("^(home-search-log.log)").matcher(file.getName()).matches();
    }
   });
   for (File file : foundFiles) {
       System.out.println(file.getName());
   }

But it is returning only one file which has exact name as given. Name of my other file is "home-search-log.log.2013-04-12" but it is not returned by this pattern. Where am I wrong?

Answer 1

我认为以下代码可能更好：

return file.getName().startsWith("home-search-log.log");

Answer 2

尝试以下正则表达式。

System.out.println("home-search-log.log.2013-04-12".matches("^home-search-log.*"));

Answer 3

Try something like this:

"^(home-search-log\\.log.*)"

First you need to escape the special chars used in regex ("-",".") and add the end to specify that you want to match anything ".*" so in this case it should match anything from "home-search-log.log" to "home-search-log.logsomething"

Answer 4

使用方法如下;

"home-search-log.log((.\\d[4]-\\d[2]-\\d[2])?)"