How to deploy erc721 use web3j??

[unqjohnny]

I have origin bin file and wrapper class avaliable, but have some problems when deploy contract. function example:

    public static RemoteCall<GameItem> deploy(Web3j web3j, Credentials credentials, BigInteger gasPrice, BigInteger gasLimit) {
        return deployRemoteCall(GameItem.class, web3j, credentials, gasPrice, gasLimit, BINARY, "");
    }

    public static <T extends Contract> RemoteCall<T> deployRemoteCall(Class<T> type, Web3j web3j, Credentials credentials, BigInteger gasPrice, BigInteger gasLimit, String binary, String encodedConstructor) {
        return deployRemoteCall(type, web3j, credentials, gasPrice, gasLimit, binary, encodedConstructor, BigInteger.ZERO);
    }

my problem is: how to generate the encodedConstructor??

my sol code like this:

// contracts/GameItem.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/utils/Counters.sol";

contract GameItem is ERC721 {
    using Counters for Counters.Counter;
    Counters.Counter private _tokenIds;

    constructor() public ERC721("GameItem", "ITM") {}

    function awardItem(address player, string memory tokenURI)
        public
        returns (uint256)
    {
        _tokenIds.increment();

        uint256 newItemId = _tokenIds.current();
        _mint(player, newItemId);
        _setTokenURI(newItemId, tokenURI);

        return newItemId;
    }
}

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[mohamedelshami]

@unqjohnny please take a look at this tutorial here: https://docs.web3j.io/4.8.7/getting_started/deploy_interact_smart_contracts/