Question

I wrote some code to read a text file from C drive directly given a path.

String fileName1 = "c:\\M2011001582.TXT";
BufferedReader is = new BufferedReader(new FileReader(fileName1));

I want to get a list of files whose filename starts with M. How can I achieve this?

Answer 1

“but how can i write a code that file is exist in local drive or not”

To scan a directory for files matching a condition:

import java.io.File;
import java.io.FilenameFilter;

public class DirScan
{
    public static void main(String[] args)
    {
        File root = new File("C:\\");
        FilenameFilter beginswithm = new FilenameFilter()
        {
         public boolean accept(File directory, String filename) {
              return filename.startsWith("M");
          }
        };

        File[] files = root.listFiles(beginswithm);
        for (File f: files)
        {
            System.out.println(f);
        }
    }
}

(The files will exist, otherwise they wouldn’t be found).