Java DefaultFileComparator-class And Method Code Example


Here is an example of how to use the DefaultFileComparator class from the org.apache.commons.io package in Java:

import java.io.File;
import org.apache.commons.io.comparator.DefaultFileComparator;

public class Example {
    public static void main(String[] args) {
        File[] files = ...
        Arrays.sort(files, DefaultFileComparator.DEFAULT_COMPARATOR);
    }
}

In this example, we are sorting an array of File objects using the DefaultFileComparator.DEFAULT_COMPARATOR constant. This comparator sorts files in the following order:

  • Directories come before files
  • Files are sorted by their name
  • If the names are the same, the files are sorted by their path

The Arrays.sort() method is used to sort the files array using the DefaultFileComparator.DEFAULT_COMPARATOR constant as the comparator.

It's worth noting that the DefaultFileComparator class is an extension of AbstractFileComparator class, that uses the File class's natural ordering to compares files. The DEFAULT_COMPARATOR constant is an instance of this class, that is configured to work as described above.