Java uses recursive algorithm to delete folders

Premise:

Integrated development environment (IDE): Eclipse

JDK version: 8.0

Several methods of file class:

1）isFile()

Test whether the file represented by this abstract pathname is a normal file.

2）list()

Returns an array of strings naming the files and directories in the directory represented by this abstract pathname.

3）delete()

Delete the file or directory represented by this abstract pathname.

4）listFiles()

Returns an array of abstract pathnames representing the files in the directory represented by the abstract pathname.

An attribute of the file class:

separator

The default name separator character associated with the system, expressed as a string in a convenient way.

code:

import java.io.File;
public class diGui_delete {
 public static void deleteAll(File file) {
 if(file.isFile()||file.list().length==0) {
  file.delete();
 }else {
  File files[] = file.listFiles();
  for(File f :files) {
  deleteAll(f);
  f.delete();
  }
 }
 }

 public static void main(String[] args) {
 File f1 = new File("d:"+File.separator+"漫画图片");
    deleteAll(f1);
 }
}

summary

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