如何在JavaFX中保存和加载游戏

Question

I'm programming an easy version of blackjack without bets in javafx, and I'm almost done with every part but now I want to be able to save and load my BlackJack game but i have no idea how to do it. Can I save everything as txt file and then load it or is there any easy way of doing it? my game layout

Answer 1

Consider a json serializer/deserializer like Google GSON .

Define json structure according to your data model and just serialize and deserialize your game objects to/from json file.

Example:

class BagOfPrimitives {
  private int value1 = 1;
  private String value2 = "abc";
  private transient int value3 = 3;
  BagOfPrimitives() {
    // no-args constructor
  }
}

// Serialization
BagOfPrimitives obj = new BagOfPrimitives();
Gson gson = new Gson();
String json = gson.toJson(obj);  

// ==> json is {"value1":1,"value2":"abc"}

// Deserialization
BagOfPrimitives obj2 = gson.fromJson(json, BagOfPrimitives.class);
// ==> obj2 is just like obj

Answer 2

You can write to a file using FileOutputStream and read from a file using FileInputStream . I would use json format and have Jackson do all serialization but that's just me.