package com.qf.part1;

import java.io.File;

import java.io.FileFilter;

import java.io.IOException;

public class FileDemo1 {

    public static void main(String[] args) throws IOException {

        File file = new File("d:\\QF\\test");

        String[] list = file.list();

        for (String s : list) {

            System.out.println(s);

        }

        System.out.println("--------------");

        //myPrint(file);

        myPrint2(file);

    }

    public static void myPrint(File dir){

        File[] files = dir.listFiles();//方法一，未添加过滤方式

        for (File file1 : files) {

            if (file1.getName().endsWith(".java")){

                System.out.println(file1.getAbsolutePath());

            }else if (file1.isDirectory()){

                myPrint(file1);

            }

        }

    }

    public static void myPrint2(File dir){

        File[] files = dir.listFiles(new FileFilter() {//方法二，doFilter过滤方式

            @Override

            public boolean accept(File pathname) {

                return pathname.getName().endsWith(".java")||pathname.isDirectory();

            }

        });//方法二，过滤方式

        for (File file1 : files) {

            if (file1.getName().endsWith(".java")){

                System.out.println(file1.getAbsolutePath());

            }else if (file1.isDirectory()){

                myPrint(file1);

            }

        }

    }

}