以下示例根据扩展名打印目录中的文件 -
示例
import java.io.IOException; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; import java.util.stream.Stream; public class Demo { public static void main(String[] args) throws IOException { Stream<Path> path = Files.walk(Paths.get("D:\ExampleDirectory")); System.out.println("List of PDF files:"); path = path.filter(var -> var.toString().endsWith(".pdf")); path.forEach(System.out::println); path = Files.walk(Paths.get("D:\ExampleDirectory")); System.out.println("List of JPG files:"); path = path.filter(var -> var.toString().endsWith(".jpg")); path.forEach(System.out::println); path = Files.walk(Paths.get("D:\ExampleDirectory")); System.out.println("List of text files:"); path = path.filter(var -> var.toString().endsWith(".txt")); path.forEach(System.out::println); path = Files.walk(Paths.get("D:\ExampleDirectory")); System.out.println("List of word files:"); path = path.filter(var -> var.toString().endsWith(".docx")); path.forEach(System.out::println); } }
输出
List of PDF files: D:\ExampleDirectory\demo1.pdf D:\ExampleDirectory\demo2.pdf List of JPG files: D:\ExampleDirectory\sample_jpeg1.jpg D:\ExampleDirectory\sample_jpeg2.jpg List of text files: D:\ExampleDirectory\sample1.txt D:\ExampleDirectory\sample2.txt D:\ExampleDirectory\sample3.txt List of word files: D:\ExampleDirectory\test1.docx D:\ExampleDirectory\test2.docx
以下示例根据扩展名打印目录中 PDF 文件的名称 -
示例
import java.io.File; import java.io.FilenameFilter; import java.io.IOException; public class MyExample{ public static void main(String args[]) throws IOException { //Creating a File object for directory File directoryPath = new File("D:\ExampleDirectory"); //Creating filter for jpg files FilenameFilter jpgFilefilter = new FilenameFilter(){ public boolean accept(File dir, String name) { String lowercaseName = name.toLowerCase(); if (lowercaseName.endsWith(".pdf")) { return true; } else { return false; } } }; String imageFilesList[] = directoryPath.list(jpgFilefilter); System.out.println("List of the jpeg files in the specified directory:"); for(String fileName : imageFilesList) { System.out.println(fileName); } } }
输出
List of the jpeg files in the specified directory: demo1.pdf demo2.pdf
以上就是如何在Java中搜索具有特定文件扩展名的目录?的详细内容,更多请关注编程之家其它相关文章!
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 dio@foxmail.com 举报,一经查实,本站将立刻删除。