zoukankan      html  css  js  c++  java
  • Delete Directory Recursively

    How to delete a directory recursively with all its subdirectories and files in Java

    In this short article, you’ll learn how to delete a directory recursively along with all its subdirectories and files.

    There are two examples that demonstrate how to achieve this task. The idea behind both of the examples is to traverse the file tree, and delete the files in any directory before deleting the directory itself.

    Delete directory recursively - Java 8+

    This example makes use of Files.walk(Path) method that returns a Stream<Path> populated with Path objects by walking the file-tree in depth-first order.

    package com.baeldung;
    
    import java.io.IOException;
    import java.nio.file.Files;
    import java.nio.file.Path;
    import java.nio.file.Paths;
    import java.util.Comparator;
    
    public class DeleteDirectoryRecursively {
    
        public static void main(String[] args) throws IOException {
            
            Path dir = Paths.get("java");
    
            // Traverse the file tree in depth-first fashion and delete each file/directory
            Files.walk(dir)
                    .sorted(Comparator.reverseOrder())
                    .forEach(path -> {
                        try {
                            System.out.println("Deleting : " + path);
                            Files.delete(path);
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    });
        }
    }
    

    Delete directory recursively - Java 7

    The following example uses Files.walkFileTree(Path, FileVisitor) method that traverses a file tree and invokes the supplied FileVisitor for each file.

    We use a SimpleFileVisitor to perform the delete operation.

    package com.zetcode;
    
    import java.io.IOException;
    import java.nio.file.*;
    import java.nio.file.attribute.BasicFileAttributes;
    
    public class DeleteDirectoryRecursively {
    
        public static void main(String[] args) throws IOException {
            Path dir = Paths.get("java");
    
            // Traverse the file tree and delete each file/directory.
            Files.walkFileTree(dir, new SimpleFileVisitor<Path>() {
                @Override
                public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
                    System.out.println("Deleting file: " + file);
                    Files.delete(file);
                    return FileVisitResult.CONTINUE;
                }
    
                @Override
                public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
                    System.out.println("Deleting dir: " + dir);
                    if (exc == null) {
                        Files.delete(dir);
                        return FileVisitResult.CONTINUE;
                    } else {
                        throw exc;
                    }
                }
            });
        }
    }
    
  • 相关阅读:
    006开源O/R映射框架内容回顾
    005---query接口初步
    004---持久对象的生命周期介绍
    C++中计算矩阵的行列式
    异面直线判定
    华夏万家不投资最佳激活顺序
    飞行目标定位测量相关文献记录
    程序运行缺少MSVCR110.dll
    C++中的return返回值:return0 or return -1?
    办宽带
  • 原文地址:https://www.cnblogs.com/PrimerPlus/p/13098826.html
Copyright © 2011-2022 走看看