json

package com.company;

import com.google.gson.JsonObject;
import com.google.gson.JsonParser;

import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Reader;
import java.nio.file.Path;
import java.nio.file.Paths;

public class json {

    private double balance;
    private double newBalance;

    public json(double newBalance) throws IOException {

        this.newBalance = new Account().setBalance();
    }


    public json() {
        this.balance = balance;
    }


    public double getBalanceJson() {
        Reader reader = null;
        try {

            reader = new FileReader("./src/account.json");

            JsonObject jsonObject = JsonParser.parseReader(reader).getAsJsonObject();

            balance = jsonObject.get("balance").getAsDouble();

            reader.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return balance;
    }

    public void setBalanceJson() throws IOException {
        Reader reader = null;
        try {

            reader = new FileReader("./src/account.json");

            JsonObject jsonObject = JsonParser.parseReader(reader).getAsJsonObject();
            jsonObject.addProperty("balance", newBalance);

            FileWriter fileWriter = new FileWriter("./src/account.json");
            fileWriter.write(jsonObject.toString());
            fileWriter.flush();


        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}