import com.github.fooballoon.setup.SimpleYAMLConfiguration; import com.github.fooballoon.setup.YAMLConfiguration; public class Main { public static void main(String[] args) { try { YAMLConfiguration yamlConfig = new SimpleYAMLConfiguration("users.yml"); int userCount = yamlConfig.getInt("users.size"); String userName = yamlConfig.getString("users[0].name"); int userAge = yamlConfig.getInt("users[0].age"); yamlConfig.set("users[0].age", 30); } catch (Exception e) { e.printStackTrace(); } } }