How to get item nbt

Hi so I am trying to make a wand plugin but I want the item to only work if it has a nbt tag

 

@Cat 700 It's been a while since i've used it but i think something like this works:

Code:Java

// This is the Bukkit ItemStack (org.bukkit.inventory.ItemStack)
ItemStack item = new ItemStack(Material.DIAMOND); // Just an example item
// This is the NMS ItemStack
net.minecraft.server./*version*/.ItemStack nmsItem = CraftItemStack.asNMSCopy(item);
// Get the NBT tag
NBTTagCompound tag = nmsItem.hasTag() ? nmsItem.getTag() : new NBTTagCompound();
// I don't remember this method, just look through the methods and see which one is kinda like this
tag.setString("key", "value");
// Set the NBT tag to the modified version
nmsItem.setTag(tag);
// Get the Bukkit ItemStack after modification
item = CraftItemStack.asBukkitCopy(nmsItem);

 

I am sorry I am not the best with plugin code so where would I put the nbt?
also how would I edit the nbt I feel like it is in your code but I don't understand most of it other than the itemstack I don't do a lot of plugin coding

 

@Cat 700 You set it using the 'setString(key, value)' but as i said i don't remember if that's the exact method, just look at the possible methods for that. I commented the code to briefly explain it.

 

@KarimAKL ok I understand but some of that code has errors it might be because I am using 1.14.2 but IDK

 

@Cat 700 Then show your current code.

 

@KarimAKL the errors that I am getting are from the nmsItem.setTag(tag); and tag.setString("key", "value"); the nmsitem one is saying identifier expected and then the tag.setstring is saying quite a few things also my code is

Code:Java

package me.cat700.MythicalArmorWands;
 
import org.bukkit.Material;
import org.bukkit.craftbukkit.v1_14_R1.inventory.CraftItemStack;
import org.bukkit.inventory.ItemStack;
 
import net.minecraft.server.v1_14_R1.NBTTagCompound;
 
public class MythicalArmorWands {
    // This is the Bukkit ItemStack (org.bukkit.inventory.ItemStack)
    ItemStack item = new ItemStack(Material.DIAMOND); // Just an example item
    // This is the NMS ItemStack
    net.minecraft.server.v1_14_R1.ItemStack nmsItem = CraftItemStack.asNMSCopy(item);
    // Get the NBT tag
    NBTTagCompound tag = nmsItem.hasTag() ? nmsItem.getTag() : new NBTTagCompound();
    // I don't remember this method, just look through the methods and see which one is kinda like this
    tag.setString("key", "value");
    // Set the NBT tag to the modified version
    nmsItem.setTag(tag);
    // Get the Bukkit ItemStack after modification
    item = CraftItemStack.asBukkitCopy(nmsItem);
}

I found this forum with this code

Code:java

public NBTTagList getLore(ItemStack i)
{
net.minecraft.server.ItemStack nms = ((CraftItemStack)i).getHandle();
NBTTagCompound tag = nms.getTag()
if (!tag.hasKey("display"))
{
return new NBTTagList();
}
NBTTagCompound display = (NBTTagCompound)tag.get("display");
NBTTagList lore = display.getList("Lore");
if (lore == null)
{
// returns empty list
return new NBTTagList();
}
return lore;
}public void setLore(String lore, ItemStack i)
{
net.minecraft.server.ItemStack nms = ((CraftItemStack)i).getHandle();
NBTTagCompound tag = nms.getTag()
if (!tag.hasKey("display"))
{
this.addDisplay();
}
NBTTagCompound display = this.getDisplay();
NBTTagList l = new NBTTagList();
// Added multiline lore support
// Splits the lines
String[] loreLines = lore.split("\n");
// Add each line
for(String line : loreLines)
{
l.add(new NBTTagString("", line));
}
// Set the lore
display.set("Lore", l);
}

but I do not know how I would use this for what I want

@KarimAKL I also found this forum but it doesn't say how to test if it has a nbt tag

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

@KarimAKL I have tried many things but I can't find much I tried to do code in this forum but that didn't work I tried replacing the tag.setstring with if(tag.hasKey) but that doesn't work IDK