Solved Objective already exists

Hi hi developers,

I really need your help. I've been working for 1-2 months trying to make a custom survival games plugin. The problem is that i can't create an objective which already exists.....

What i'm trying to do in this piece of code is that there will be displayed a healthbar under the name of the player. But i can't create this objective because it already exists.

Code:

Code:

    @SuppressWarnings("deprecation")
    public void SetHealth(Player player) {
        ScoreboardManager sbManager = Bukkit.getServer().getScoreboardManager();
        SGhealth = sbManager.getNewScoreboard();
       
        if(SGhealth.getObjective("sgHealth") == null) {
            healthObj = SGscoreboard.registerNewObjective("sgHealth", "dummy");
            healthObj.setDisplayName("" + ChatColor.RED + "❤ ");
            healthObj.setDisplaySlot(DisplaySlot.BELOW_NAME);
           
            Damageable playerD = (Damageable) player;
            Score healthScore = healthObj.getScore(player);
            healthScore.setScore((int) playerD.getHealth());
        } else {
            healthObj = SGscoreboard.getObjective("sgHealth");
            healthObj.setDisplayName("" + ChatColor.RED + "❤ ");
            healthObj.setDisplaySlot(DisplaySlot.BELOW_NAME);
           
            Damageable playerD = (Damageable) player;
            Score healthScore = healthObj.getScore(player);
            healthScore.setScore((int) playerD.getHealth());
        }
       
        player.setScoreboard(SGhealth);
    }

Error:

StackTrace (open) StackTrace (close)

[18:50:40] [Server thread/WARN]: [ArcictMC] Task #180 for ArcictMC v0.1.7 generated an exception
java.lang.IllegalArgumentException: An objective of name 'sgHealth' already exists
at org.apache.commons.lang.Validate.isTrue(Validate.java:136) ~[craftbukkit.jar:git-Spigot-da32fe1-df0b4c1]
at org.bukkit.craftbukkit.v1_8_R1.scoreboard.CraftScoreboard.registerNewObjective(CraftScoreboard.java:40) ~[craftbukkit.jar:git-Spigot-da32fe1-df0b4c1]
at org.bukkit.craftbukkit.v1_8_R1.scoreboard.CraftScoreboard.registerNewObjective(CraftScoreboard.java:20) ~[craftbukkit.jar:git-Spigot-da32fe1-df0b4c1]
at me.CheesyFreezy.Scoreboard.Scoreboard.SetHealth(Scoreboard.java:219) ~[?:?]
at me.CheesyFreezy.Main.Core$2.run(Core.java:255) ~[?:?]
at org.bukkit.craftbukkit.v1_8_R1.scheduler.CraftTask.run(CraftTask.java:71) ~[craftbukkit.jar:git-Spigot-da32fe1-df0b4c1]
at org.bukkit.craftbukkit.v1_8_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:350) [craftbukkit.jar:git-Spigot-da32fe1-df0b4c1]
at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:697) [craftbukkit.jar:git-Spigot-da32fe1-df0b4c1]
at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316) [craftbukkit.jar:git-Spigot-da32fe1-df0b4c1]
at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:627) [craftbukkit.jar:git-Spigot-da32fe1-df0b4c1]
at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:530) [craftbukkit.jar:git-Spigot-da32fe1-df0b4c1]
at java.lang.Thread.run(Unknown Source) [?:1.7.0_71]

 

@CheesyFreezy
First of all I hope your copy-paste messed up because SGhealth does not have a type and healthObj is not defined...

Second of all, is it possible that you are importing the wrong scoreboard? According to the stacktrace you are using CraftScoreboard. I am using org.bukkit.scoreboard.Scoreboard and can succesfully register the same object multiple times.

 

@meguy26 Scoreboard is an interface, and CraftScoreboard is a class. CraftScoreboard would show up in your own stacktraces if they existed because it's the actual class that is used at runtime. Also, a copy paste cannot 'screw up' like that but it is more likely that SGhealth is a member instead of local.
@CheesyFreezy This is very perplexing because nothing has really happened yet when the scoreboard is registered. What other plugins do you have running?

Also, you have a lot of code repeated. Why not just create the variable, then initialize it inside the if statement, then do the rest of the code?

 

at org.apache.commons.lang.Validate.isTrue(Validate.java:136) ~[craftbukkit.jar:git-Spigot-da32fe1-df0b4c1]

Now we know exactly where the issue is. In your "Validate.java" on line 136 there's an issue.

(No spoon feeding allowed)

 

@pie_flavor I've got no other plugins running, except for this one. I know i'm repeating the same code.
@bcohen9685 That error is not of one of my classes. Read the stacktrace better. It says at me.CheesyFreezy.Scoreboard.Scoreboard.SetHealth(Scoreboard.java:219)