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creating a file and all parent directories

static String separator = File.separator;

public static final String DIRECTORYBIGLIETTI = "C:" + separator + "Users" + separator + "7-Spode" + separator + "Documents" + separator + "Android" + separator + "HUVWSZE"; ///sdcard/.SpodeApps/HUVWSZE/

public static final String FILEBIGLIETTI = DIRECTORYBIGLIETTI.concat(separator + "lista.txt");

 

File cartellainputoutput = new File(DIRECTORYBIGLIETTI);

        if(!cartellainputoutput.exists())

        {

            cartellainputoutput.mkdirs();

        }

        File fileinputoutput = new File(FILEBIGLIETTI);

        if(!fileinputoutput.exists())

            try {

                fileinputoutput.createNewFile();

            } catch (IOException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

       

File dir = getFilesDir(); // Returns a directory exclusively for this app.

File file = new File(dir, "directory/file");

file.mkdirs();

file.createNewFile();