Question

I was just wondering if the code I made will work to create multiple directories within each other. I used this as a reference.

        String username = enterUserTF.getText(); //the username the user enters in a textfield.

        boolean myGamesFolderSuccess = new File(System.getProperty("user.home"), "My Games").mkdir();

        boolean mainFolderSuccess = new File("My Games", "Type King").mkdir();

        boolean userSuccess = new File("TypeKing", username).mkdir(); //creates a folder with the users username.

        if(myGamesFolderSuccess){
            if(mainFolderSuccess){
                if(userSuccess){
                    System.out.println("Directory " + username + " created.");

                        File f = new File(username + "/test.txt");
                        if(!f.exists()){
                            try {
                                f.createNewFile();

                            } catch (IOException e) {
                                e.printStackTrace();
                                System.out.println("Could not create user's file.");
                            }
                        }
                    }   
                }
            }
        }

So to sum up the above, I made the the first directory “My Games” in user.home, then placed my game’s name, “Type King” in that directory, and whenever the user enters a username, I want a directory to be created that is their username. File f just checks for a file in the username directory.

Answer 1

It is recommended to use the mkdirs method of the File class instead of checking multiple status flags when creating nested directories. Also, never use concatenation for creating File objects/paths.

Also, if you want your game to be portable, make sure you don’t have special characters in your directory names like a space etc.Why are you asking user for the name instead of retrieving it from user.name system property? Something like this should work:

String username = System.getProperty("user.name");
File myGamesDir = new File(System.getProperty("user.home"), "my-games");
File typeKingDir = new File(myGamesDir, "type-king");
File userDir = new File(typeKingDir, username);
boolean userSuccess = userDir.mkdirs();
if(userSuccess){
    System.out.println("Directory " + username + " created.");
    File f = new File(userDir, "test.txt");
    if(!f.exists()){
        try {
            f.createNewFile();
        } catch (IOException e) {
            e.printStackTrace();
            System.out.println("Could not create user's file.");
        }
    }

}