无法从XUL / JavaScript访问Java代码

This is my java file :

这是我的java文件:

import java.io.File;
import java.lang.String; 
public class ListFiles { 
public static void main(String[] args) {

  // Directory path here
  String path = "D:/xmlfiles/";

  String files;
  File folder = new File(path);
  File[] listOfFiles = folder.listFiles(); 

  for (int i = 0; i < listOfFiles.length; i++) {
    if (listOfFiles[i].isFile()) {
      files = listOfFiles[i].getName();
      System.out.println(files);

      }
    }
  }
}
import j