[Java]關於FilenameFilter的使用

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

class HTMLFilter implements FilenameFilter {

    public boolean accept(File dir, String name) {
        return (name.endsWith(".html"));
    }
}

class Main {

    public static void main(String[] args) {
        String dir = ".";
        if (args.length == 1) {
            dir = args[0];
        }

        File f1 = new File(dir);
        int i;
        String[] ls;
        FilenameFilter filter = new HTMLFilter();
        System.out.println("HTML Files: ");
        for (ls = f1.list(filter), i = 0;
                ls != null && i < ls.length;
                System.out.println("\t" + ls[i++])) {
            ;
        }
    }
}

[REF]http://home.tiscali.nl/~bmc88/java/sbook/0128.html