Solved Moving Items around

Hello,

What I am trying to do is move the Item in the Off Hand to the Main hand, and vice versa.

This is what I have thought of, but, I couldn't get it working. I tried searching around, but I couldn't find anything.

Code:

p.getInventory().getItemInOffHand().getItemMeta();
                            ItemStack offHand = new ItemStack(p.getInventory().getItemInOffHand().getType(), p.getInventory().getItemInOffHand().getAmount());
                            ItemMeta offHandMeta = offHand.getItemMeta();
                            offHandMeta.getLore());
                            offHandMeta.getEnchants();
                            offHandMeta.getDisplayName();
                            offHand.setItemMeta(offHandMeta);
                            ItemStack mainHand = new ItemStack(p.getInventory().getItemInOffHand().getType(), p.getInventory().getItemInOffHand().getAmount());
                            ItemMeta mainHandMeta = mainHand.getItemMeta();
                            mainHandMeta.getLore();
                            mainHandMeta.getEnchants();
                            mainHand.setItemMeta(mainHandMeta);
                            ItemStack air = new ItemStack(Material.AIR, 1);
                            p.updateInventory();
                            p.getInventory().setItemInHand(air);
                            p.getInventory().setItemInMainHand(air);
                            p.getInventory().setItemInOffHand(air);
                            p.getInventory().setItemInHand(offHand);
                            p.getInventory().setItemInOffHand(mainHand);
                            p.updateInventory();

I am trying to also copy over the ItemMeta, enchant, lore, etc, but that's what I am having trouble on.
There's an error in console which points to line 95, which is " offHandMeta.getLore());"

because, well, that ain't good. Haha.

Anyways,
Here's the error:

Code:

[10:51:40 WARN]: [OPPrison] Task #34 for OPPrison v1.0.0.0 generated an exception
java.lang.NullPointerException
        at co.plasmanetwork.listeners.items.TrollPickaxeListener$2.run(TrollPickaxeListener.java:95) ~[?:?]
        at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot111.jar:git-Spigot-f950f8e-b64d852]
        at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:353) [spigot111.jar:git-Spigot-f950f8e-b64d852]
        at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:730) [spigot111.jar:git-Spigot-f950f8e-b64d852]
        at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [spigot111.jar:git-Spigot-f950f8e-b64d852]
        at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675) [spigot111.jar:git-Spigot-f950f8e-b64d852]
        at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574) [spigot111.jar:git-Spigot-f950f8e-b64d852]
        at java.lang.Thread.run(Thread.java:745) [?:1.7.0_111]

Thanks.

 

@TheManiacGamers

Well first off, it looks like there are mismatched parentheses here. But you never actually check if the item has metadata, which it possible that it does not. ItemStack has a "hasMetaData" method or something like that. Use that to check to see if it has metadata before trying to use it.

Next time, check the millions of forum threads on this, or read the documentation.

 

Hate to be a noob, but I'm not sure how to do that,
Could you please help?
@timtower

That would been a good idea, can't believe I forgot that.

 

I wasn't asking for spoonfeed code.
I was just asking for a description on how to,
but okay, ill spend hours tryna figure it out. All good
@timtower

 

@timtower

*facepalms* I see what you're saying.

I need sleep x,D

Thanks. Will post how I go.

// wow, *is ashamed*

Code:

                            ItemStack temp = p.getInventory().getItemInOffHand();
                            ItemStack mainHand = p.getInventory().getItemInMainHand();
                            p.getInventory().setItemInOffHand(mainHand);
                            p.getInventory().setItemInMainHand(temp);
                            p.updateInventory();