JAVA | Saving file path

Question

So I wanted to save files needed for the program, but the user has to decide where to save files... But because I dont want the user to select the path everytime he starts the program, the program should save the path where to go to find the files, how to?

I made the user select the file with a JFileChooser.

    JButton jButton = new JButton();
    JFileChooser jFileChooser = new JFileChooser();
    jFileChooser.setCurrentDirectory(new File(System.getProperty("user.home")));
    jFileChooser.setDialogTitle("Choose your Path!");
    jFileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
    if(jFileChooser.showOpenDialog(jButton) == JFileChooser.APPROVE_OPTION){

    }
    path = jFileChooser.getSelectedFile().getAbsolutePath();
    pathBind = jFileChooser.getSelectedFile().getAbsolutePath() + "/binds.jar";

    bindFile = new File(pathBind);

If any further information is needed, I'll give it... Sorry if I forgot something^^.

You can save the directory in another file. Save that file in the user's directory. Use System.getProperty("user.home") to select the user's home directory. — Christopher Schneider
– Christopher Schneider, Commented Apr 19, 2017 at 19:39
I thought so, but the program cant remember the path of that file either, or am I wrong? //EDIT: Nevermind, I'll try doing that. Thank you. :) — ZuckerKuchen
– ZuckerKuchen, Commented Apr 19, 2017 at 19:41

VGR · Accepted Answer · 2017-04-19 21:02:37Z

1

That kind of information probably belongs in user preferences, which you access using the Preferences class:

private static final String LAST_SAVE_DIR_PREFS_KEY = "last-save-dir";

private static final Preferences PREFERENCES =
    Preferences.userNodeForPackage(MyUserInterface.class);

// ...

    String saveDir = PREFERENCES.get(LAST_SAVE_DIR_PREFS_KEY,
        System.getProperty("user.home"));
    jFileChooser.setSelectedFile(new File(saveDir));

    jFileChooser.setDialogTitle("Choose your Path!");
    jFileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
    if (jFileChooser.showOpenDialog(jButton) == JFileChooser.APPROVE_OPTION) {

        PREFERENCES.put(LAST_SAVE_DIR_PREFS_KEY,
            jFileChooser.getSelectedFile().toString());

        // ...
    }

answered Apr 19, 2017 at 21:02

VGR

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