ItemStack

item have 5 method to add:

---

// NBT's '"' need use '\"',

// looks like \"key\": \"any value\",

// and dont use line feed

1. "name@count@meta@nbt"

"minecraft:stone@2@10@{\"str":\"Hi_This_Is_Item\"}"

---

// the item will not hava nbt

// looks like 'name@count@meta@{}'

2. "name@count@meta"

"minecraft:stone@2@10"

---

// the item with use 'meta 0'

// looks like 'name@count@0'

3. "name@count"

"minecraft:stone@2"

---

// the item with use '1 count' and 'meta 0'

// looks like 'name@1@0'

4. "name"

"minecraft:stone"

---

5. JsonObject

{
  "name": "minecraft:stone",// the item name, must exist
  "count": 4,// the item count/amount, if not fount, wiil use 1 to set item count
  "meta": 5,// the item meta, if not fount, wiil use 0 to set item meta
  "nbt":{// the item nbtTags, if not fount, item will not have nbt
    "boolean":{ // use 'boolean' to add booleans
       "key": false
     },
     "string":{// use 'string' to add strings
      "key": "value" 
    },
    "long":{// use 'long' to add longs
      "key":value
    },
    "int":{// use 'int' to add ints
      "key":value
    },
    "float":{// use 'float' to add floats
      "key":value
    },
    "double":{// use 'double' to add doubles
      "key":value
    },
    "byte":{// use 'byte' to add bytes
      "key":value
    },
    "short":{// use 'short' to add shorts
      "key":value
    },
    "int_array":{// use 'int_array' to add int arrays
      "key": [321,9345,6165]
    },
    "byte_array":{// use 'byte_array' to add byte arrays
      "key": [1,3,4]
    },
    "string_array":{// use 'string_array' to add string arrays
      "key": ["111","jiujiujiu", "999"]
    },
    "boolean_array":{// use 'boolean_array' to add boolean arrays
      "key": [false, true, false]
    },
    "tags":{ // use 'tags' to add more sub nbts
      "key":{ // the sub nbt will use normal nbt method to set
        // some tags...
        "tags":{} // the sub nbt can add more and more sub nbt, use 'tags' to add it
      }
    }
  }
}