java filenames filter pattern [duplicate]

Answer 1

You may need to scape your specific wild cards for those used in Java regex.

For instance to replace "*" you could use something like:

import java.io.*;

class Filter {
    public static void main ( String [] args ) {
        String argPattern = args[0];

        final String pattern = argPattern.replace(".","\\.").replace("*",".*");
        System.out.println("transformed pattern = " + pattern );
        for( File f : new File(".").listFiles( new FilenameFilter(){
                           public boolean accept( File dir, String name ) { 
                               return name.matches( pattern );
                           }
                        })){
             System.out.println( f.getName() );
        }
    }
}


$ls -l *ter.*
-rw-r--r--  1 oscarreyes  staff  1083 Jun 16 17:55 Filter.class
-rw-r--r--  1 oscarreyes  staff   616 Jun 16 17:56 Filter.java
$java Filter "*ter.*"
transformed pattern = .*ter\..*
Filter.class
Filter.java