java File过滤文件的多种方法

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:QFtest");        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);            }        }    }}