Solved Count config list

Hello everybody,
I am making a plugin, but the connection between the plugin and the .yml file doesn't work correct. I want to count the number of 'treasures' that are in the .yml.
This is a part of the class where it must count:

Code:java

List<?> list = Treasure.yaml.getList("Treasures");
int count = list.size();

The yaml is connect to the main class where it is connected to the file

Code:java

YamlConfiguration yaml;
File config = new File("plugins/Treasure/Config.yml");
yaml = YamlConfiguration.loadConfiguration(config);

The .yml file is like this:
Treasures:
'1':
items:
'22': 1

But when I want it to count (answer is 1), it says a nullpointer. How to fix it?

 

Well... this is assuming the actual format is as follows:

Code:

Treasures:
    '1':
items:
    '22': 1

Please correct me if I'm wrong on this assumption.

If the above is true, then the reason you're getting a null pointer is because Treasures is not a List of items. Rather, Treasures is a ConfigurationSection.

Having no knowledge of the original intent, I can only give the following advice, either:

A) Make Treasures a normal key with a value and just get the integer that you wanted.

Code:

Treasures: 1

B) Make Treasures a list.

Code:

Treasures:
  - 1
  - 3
  - 8

C) Keep it as a ConfigurationSection and just get the size of keys.

Code:

int treasures = Treasure.yaml.getConfigurationSection("Treasures").getKeys(false).size();

No idea what you're planning to do with the Treasures section... so, just pick what works for your format.

 

Thank you! It worked!