How to delete subfolder and its content in Java

[udhayan kumar]

I want to delete subfolders and its contents from a folder using Java.

For example:
Folder
|__Subfolder1 - a.txt
|__Subfolder2 - b.txt
|__Subfolder3 - c.txt

I need to delete content of subfolders and its contents using Java. But Folder(Parent) should not be deleted.
Please help me.

[Jesper de Jong]

Class java.io.File has a delete() method which you can use to delete files and directories.

You'll have to first delete all files in the directory, and then the directory itself.

[udhayan kumar]

Thanks for the reply Jesper. I am using following snippet to delete contents of the subfolders, but I don't know how to delete the subfolder(directory) itself. I am new to Java, please help me. Thanks in advance.

public static void deleteDirectory(File directory) {
              if (directory.exists()) {
                     File[] files = directory.listFiles();
                     if (null != files) {
                           for (int i = 0; i < files.length; i++) {
                                  System.out.println(files[i].getName());
                                  if (files[i].isDirectory()) {
                                         deleteDirectory(files[i]);
                                  } else {
                                         files[i].delete();
                                  }
                           }
                     }
              }
       }

[Jesper de Jong]

Just call directory.delete(); at the end of the method, between lines 13 and 14.