Right click, one time use.

I'm working on a plugin that gives you a book when you click a sign.
But only one time use.

So what do i have to import?
I've made a GitHub Repositories, so please help me with code.
I hope I've done it right with permissions.

LINK TO REPOSITORIES

 

Create a map of names->boolean

Code:

HashMap<String,Boolean> data = new HashMap<String,Boolean>();

And then you can save it to a text file:

Code:

public void save() throws Exception() {
    BufferedWriter writer = new BufferedWriter(new FileWriter(new File("booksign.properties")));
    for(Entry<String,Boolean> entry : data) {
        writer.write(entry.getKey() + ":" + entry.getValue()); writer.newLine();
    }
}

And to read it.

Code:

public void load() throws Exception() {
    BufferedReader reader = new BufferedReader(new FileReader(new File("booksign.properties")));
    String line = null;
    while((line = reader.readLine()) != null) {
        String[] args = line.split(":");
        data.put(args[0],Boolean.parseBoolean(args[1]));
    }
}

Your welcome