rm file for deep path folder, such as npm in windows

DeleteFiles.java

import java.io.File;
 
public class DeleteFiles {
    public static void deleteFiles( File file ){
        if( file.isDirectory() ){
            File[] files = file.listFiles();
            if( files.length == 0 ){
                file.delete();
            } else {
                for( File f : files ){
                    deleteFiles(f);
                    f.delete();
                }
            }
        } else {
            file.delete();
        }
    }
    public static void main(String[] args) {
        File file = new File("C:\\Users\\genff\\WorkSpace\\github\\react-photo-feed\\node_modules");
        deleteFiles(file);
    }
}