java create folders, and create files

Methods and Results

 

 

 

 Description:

1 folder

　　(. file.getParentFile () exists () ) if {// determines whether there is a folder
            System.out.println ( "folder exists !!");
        } the else {
            System.out.println ( "folder does not exist! ! ");    
            file.getParentFile () mkdirs ();. // mkdir (); create a directory
        }

2 file

　　if (file.exists ()) {// file exists determines
            System.out.println ( "present !!");
        } the else {
            System.out.println ( "absent !!");    
            the try {
                file.createNewFile ();
            } the catch (IOException E) {
                System.out.println ( "creation failed");
                e.printStackTrace ();
            }
        }

3 judgment file attributes 

　　isDirectory () to check whether an object is a folder.

@GF