Java-文件操作-FAQ-删除目录

1 需求

需求1：删除目录，不管是否非空；

需求2：删除空目录；

需求3：删除非空目录；

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2 接口

• File
  • delete()
  • deleteOnExit()
• Files
  • delete()
  • deleteIfExists()

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3.X 示例：删除空目录

import java.io.File;

public class Main {
    public static void main(String[] args) {
        try {
            // 创建一个新的File对象
            File dir = new File("path/to/directory");

            // 如果目录存在，则删除它
            if (dir.exists()) {
                boolean result = dir.delete();
                if (result) {
                    System.out.println("Directory deleted successfully!");
                } else {
                    System.out.println("Failed to delete directory.");
                }
            } else {
                System.out.println("Directory does not exist.");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

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3.X 示例：删除非空目录

import java.io.File;

public class DirectoryDeleter {
    public static void main(String[] args) {
        File directory = new File("path/to/directory");
        deleteDirectory(directory);
    }

    public static void deleteDirectory(File directory) {
        if (directory.exists()) {
            File[] files = directory.listFiles();
            if (files != null) {
                for (File file : files) {
                    if (file.isDirectory()) {
                        deleteDirectory(file); // 递归删除子目录
                    } else {
                        file.delete(); // 删除文件
                    }
                }
            }
            directory.delete(); // 删除目录
        }
    }
}

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4 参考资料