使用Path、Paths和DirectoryStream<T>查找出“指定格式”文件的方法分享

实现思路:
    使用DirectoryStream即可查找出指定格式的文件

package com.java265;
import java.io.File;
import java.io.IOException;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
 
public class PathDemo {
    public static void main(String[] args) throws IOException {
        PathDemo pathDemo = new PathDemo();
        pathDemo.findFile("D:"+ File.separator+"test");
    }
 
    public void findFile(String dir) throws IOException {
        Path path = Paths.get(dir);
        DirectoryStream<Path> paths = Files.newDirectoryStream(path,"*.java");
        for(Path p : paths){
            System.out.println(p.getFileName());
        }
    }
}