# API gives NullPointerException

**URL:** https://discourse.processing.org/t/api-gives-nullpointerexception/26792
**Category:** Coding Questions
**Tags:** homework
**Created:** [January 5, 2021, 1:32pm UTC](https://discourse.processing.org/t/api-gives-nullpointerexception/26792 "2021-01-05T13:32:26Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![AntiQliMax](https://avatars.discourse-cdn.com/v4/letter/a/e5b9ba/32.png) [@AntiQliMax](https://discourse.processing.org/u/AntiQliMax)
#### Post date: [January 5, 2021, 1:32pm UTC](https://discourse.processing.org/t/api-gives-nullpointerexception/26792/1 "2021-01-05T13:32:26Z")

</div>

Dear users of this forum.

I started learning API calls and tried it with some code I found on the old forum.  
The goal is i want to use the openweather API to check if it is raining, now the API works and the URL, but It gives me a NullPointerException in the code? the API call doesn’t give me .txt document i put in the map of my code just this:  
{“coord”:{“lon”:6.79,“lat”:52.26},“weather”:[{“id”:804,“main”:“Clouds”,“description”:“overcast clouds”,“icon”:“04d”}],“base”:“stations”,“main”:{“temp”:275.93,“feels\_like”:272.63,“temp\_min”:274.82,“temp\_max”:276.48,“pressure”:1016,“humidity”:92},“visibility”:10000,“wind”:{“speed”:2.24,“deg”:80,“gust”:7.6},“clouds”:{“all”:99},“dt”:1609851652,“sys”:{“type”:3,“id”:2010748,“country”:“NL”,“sunrise”:1609832475,“sunset”:1609860895},“timezone”:3600,“id”:0,“name”:“Hengelo”,“cod”:200}

I use this code for my code:  
void loadData() {  
JSONObject json = loadJSONObject(url+"&APPID="+API\_Key);  
JSONObject windData = json.getJSONObject(“wind”);  
float speed = windData.getFloat(“speed”);  
println (speed);  
}

I want to add that i just made a simple LoadData call in a different Class nothing special.

---

<div class="post-metadata">

### Author: ![11111100100](https://avatars.discourse-cdn.com/v4/letter/1/edb3f5/32.png) [@11111100100](https://discourse.processing.org/u/11111100100)
#### Post date: [March 3, 2021, 2:08pm UTC](https://discourse.processing.org/t/api-gives-nullpointerexception/26792/2 "2021-03-03T14:08:56Z")

</div>

When making this call, make sure you include `http://` before any url that you might include.

If you use something like this:

```auto
String url = "api.openweathermap.org/data/2.5/weather?q=" + city + "&appid=" + apiKey;
JSONObject json = loadJSONObject(url);

```

You’re going to get a `NullPointerException`:

```auto
The file "api.openweathermap.org/data/2.5/weather?q={city}&appid={key}" is missing or inaccessible, make sure the URL is valid or that the file has been added to your sketch and is readable.
NullPointerException

```

* * *
Make sure you include http:// before your url:

```auto
String url = "http://api.openweathermap.org/data/2.5/weather?q=" + city + "&appid=" + apiKey;
JSONObject json = loadJSONObject(url);

```

For example, a complete program might look like this:

```auto
String city = "{your city}";
String apiKey = "{your api key}";
String url = "http://api.openweathermap.org/data/2.5/weather?q=" + city + "&appid=" + apiKey;
JSONObject json = loadJSONObject(url);
JSONObject windData = json.getJSONObject("wind");
float speed = windData.getFloat("speed");
int direction = windData.getInt("deg");
println("Wind Speed: " + speed);
println("Wind Direction: " + direction + "°");

```

Gives:

```auto
>> Wind Speed: 2.63
>> Wind Direction: 291°

```

* * *

**tl;dr** Use `http://` before your url