Bukkit / Spigotplugin - Remove entry from config

Question

I'm working on a Bukkit / Spigotplugin which allows users to vote for things. The plugin uses a config. I want to remove an entry but it doesn't work. What I found on Google:

getConfig().set("your.value", null);

what I implemented:

int i = id;
while(getConfig().contains("ThingsYouCanVoteFor." + (i + 1)))
{
    getConfig().set("ThingsYouCanVoteFor." + Integer.toString(i) + ".name", getConfig().getString("ThingsYouCanVoteFor." + Integer.toString(i + 1) + ".name"));
    getConfig().set("ThingsYouCanVoteFor." + Integer.toString(i) + ".votes", getConfig().getInt("ThingsYouCanVoteFor." + Integer.toString(i + 1) + ".votes"));
    i++;
}
getConfig().set("ThingsYouCanVoteFor." + Integer.toString(i + 1), null);
saveConfig();
sender.sendMessage("§aRemoved ID " + id);

how the config looks:

ThingsYouCanVoteFor:
  0:
    name: Build a bridge
    votes: 0
  1:
    name: Kill the owner
    votes: 2
  2:
    name: Vote for something other
    votes: 1
  3:
    name: Remove all banned peoples inventory
    votes: 0
  4:
    name: Teleport to others home
    votes: 0
  5:
    name: Dig a hole in the air
    votes: 0
  6:
    name: Shutdown the internet
    votes: 0
PeopleWhoVoted:
- Gamingwelle
- BDevGWAdmin
- Sllikson
OpenForVoting: false

how it should look like when I use "/voteadmin remove 3":

ThingsYouCanVoteFor:
  0:
    name: Build a bridge
    votes: 0
  1:
    name: Kill the owner
    votes: 2
  2:
    name: Vote for something other
    votes: 1
  3:
    name: Teleport to others home
    votes: 0
  4:
    name: Dig a hole in the air
    votes: 0
  5:
    name: Shutdown the internet
    votes: 0
PeopleWhoVoted:
- Gamingwelle
- BDevGWAdmin
- Sllikson
OpenForVoting: false

how it looks:

ThingsYouCanVoteFor:
  0:
    name: Build a bridge
    votes: 0
  1:
    name: Kill the owner
    votes: 2
  2:
    name: Vote for something other
    votes: 1
  3:
    name: Teleport to others home
    votes: 0
  4:
    name: Dig a hole in the air
    votes: 0
  5:
    name: Shutdown the internet
    votes: 0
  6:
    name: Shutdown the internet
    votes: 0
PeopleWhoVoted:
- Gamingwelle
- BDevGWAdmin
- Sllikson
OpenForVoting: false

using

getConfig().getConfigurationSection("ThingsYouCanVoteFor").getKeys(false).remove(i + 1)

doesn't work either.

What did I do wrong?

Answer 1

You can simply remove the value in a path using:

config.set(pathToRemove, null);