40 lines
1.1 KiB
Java
40 lines
1.1 KiB
Java
// files/DirList2.java
|
|
// ©2016 MindView LLC: see Copyright.txt
|
|
// We make no guarantees that this code is fit for any purpose.
|
|
// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
|
|
// Uses anonymous inner classes.
|
|
// {Args: "D.*\.java"}
|
|
import java.util.regex.*;
|
|
import java.io.*;
|
|
import java.util.*;
|
|
|
|
public class DirList2 {
|
|
public static FilenameFilter filter(final String regex) {
|
|
// Creation of anonymous inner class:
|
|
return new FilenameFilter() {
|
|
private Pattern pattern = Pattern.compile(regex);
|
|
@Override
|
|
public boolean accept(File dir, String name) {
|
|
return pattern.matcher(name).matches();
|
|
}
|
|
}; // End of anonymous inner class
|
|
}
|
|
public static void main(String[] args) {
|
|
File path = new File(".");
|
|
String[] list;
|
|
if(args.length == 0)
|
|
list = path.list();
|
|
else
|
|
list = path.list(filter(args[0]));
|
|
Arrays.sort(list, String.CASE_INSENSITIVE_ORDER);
|
|
for(String dirItem : list)
|
|
System.out.println(dirItem);
|
|
}
|
|
}
|
|
/* Output:
|
|
DirectoryDemo.java
|
|
DirList.java
|
|
DirList2.java
|
|
DirList3.java
|
|
*/
|