Scan delete folder problems

/* practice ： Delete a directory with many levels of subdirectories ( recursive )

 

Tips ： Multi level directory , You can only delete your son first , Delete Lao Tzu again

In the process of recursive scanning , Delete all files first , If it's a folder , Can only recursively enter , Scan again .

Then delete the parent directory */

public class Work4 {

public staticvoid main(String[] args) {

    Filef=new File("F:\\javabase");

    scanFolder(f);

}

 

private staticvoid scanFolder(File f) {

//  Robustness judgment

    if(f.isFile())

    { thrownew RuntimeException(" brother , You need to transfer the folder ");}

    File[]l = f.listFiles();

    for(File i : l)

    {

        if(i.isFile())

        {

            i.delete();

        }

        else

        {

            scanFolder(i);// If it's a folder , Then continue to search

            // If it is a folder, send the folder as the parent directory to a scanning function , So you can go through f.delete（） To delete

//          i.delete();// Search done , Delete folder

        }

    }

    f.delete();// Because each cycle is the whole cycle to the end , If you get to the bottom, you will run the current command

}

}