import java.io.File;

public class T5 {

    public static void main(String[] args) {
        // 指定要检查的根目录
        String rootDirectory = "D:\\IdeaProjectsTest";

        File rootDir = new File(rootDirectory);
        File[] subDirs = rootDir.listFiles(File::isDirectory);

        if (subDirs != null) {
            for (File subDir : subDirs) {
                File targetDir = new File(subDir, "target");
                if (targetDir.exists() && targetDir.isDirectory()) {
                    deleteFolder(targetDir);
                }
            }
        }
    }

    /**
     * 删除指定的文件夹及其内容。
     *
     * @param folder 要删除的文件夹
     */
    private static void deleteFolder(File folder) {
        File[] files = folder.listFiles();
        if (files != null) {
            for (File file : files) {
                if (file.isDirectory()) {
                    deleteFolder(file); // 递归删除子文件夹
                } else {

                    System.out.println(file.getAbsolutePath());
                    file.delete(); // 删除文件
                }
            }
        }
        System.out.println(folder.getAbsolutePath());
        folder.delete(); // 删除空文件夹
    }
}