Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.io.File;
import java.io.FileFilter;

import java.util.Collection;
import java.util.LinkedList;

public class Main {
    public static Collection<File> listFiles(File directory, String suffix) {
        final String _suffix = "." + suffix;
        FileFilter filter = new FileFilter() {
            @Override
            public boolean accept(File file) {
                if (file.isDirectory())
                    return true;
                String name = file.getName();
                int endLen = _suffix.length();
                if (name.regionMatches(true, name.length() - endLen, _suffix, 0, endLen)) {
                    return true;
                }
                return false;
            }
        };
        if (!directory.isDirectory()) {
            throw new IllegalArgumentException("Parameter 'directory' is not a directory");
        }

        if (filter == null) {
            throw new NullPointerException("Parameter 'fileFilter' is null");
        }
        Collection<File> files = new LinkedList<File>();
        innerListFiles(files, directory, filter);
        return files;
    }

    private static void innerListFiles(Collection<File> files, File directory, FileFilter filter) {
        File[] found = directory.listFiles(filter);
        if (found != null)
            for (File file : found)
                if (file.isDirectory())
                    innerListFiles(files, file, filter);
                else
                    files.add(file);
    }
}