JSON Null Pointer Exception

LaxOfBayDay

Null pointer exception?

JSONObject unDispersed;

  Float undisperesdLTC = unDispersed.getJSONObject("data").getFloat("confirmed_balance");

void setup() {
  size(480, 320);
  frameRate(24);
}

void draw() {
  pullUndispersed();
  println(undisperesdLTC);
}

void pullUndispersed() {
    //LTC pool
  String  walletAPI_URL = "https://"+"chain.so/api/v2/get_address_balance/LTC/LNhixHYiLQF2v6wKyoiizgJaQunuy6d8Jx/6";
  unDispersed = loadJSONObject(walletAPI_URL);
}

Chrisir

1. the forum is killing links

2. you try to use unDispersed in line 3 but it's only set in line 18, you need a new order:

(changed http a bit to avoid that forum changes it)

JSONObject unDispersed;

Float undisperesdLTC;

void setup() {
  size(480, 320);
  frameRate(24);

  pullUndispersed();
}

void draw() {

  undisperesdLTC = unDispersed.getJSONObject("data").getFloat("confirmed_balance");

  println(undisperesdLTC);
}

void pullUndispersed() {

  String  walletAPI_URL = "http : // chain.so/api/v2/get_address_balance/LTC/LNhixHYiLQF2v6wKyoiizgJaQunuy6d8Jx/6" ;

  unDispersed = loadJSONObject(walletAPI_URL);
}

here I receive in line 23 a http 403 - Forbidden status in response to a request from a client for a web page

maybe reread documentation of chain.so/api

https://en.wikipedia.org/wiki/HTTP_403