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Deploying a Smart Contract

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trident-java allows you to deploy a smart contract by ABI and bytecode.

Compile the Smart Contract

Compilation to bytecode is performed by the Solidity compiler, solc.

To compile the Solidity code run:

$ solc <contract>.sol --bin --abi --optimize -o <output-dir>/

The --bin and --abi compiler arguments are both required to deploy your smart contract with Trident-Java.

Deploy the Smart Contract

The smart contract is being ready to be deployed with the compiled ABI and bytecode:

ApiWrapper wrapper = ApiWrapper.ofMainnet("hex private key");
String byteCode = "bytecode";
String abi = "ABI";
Contract cntr = new Contract.Builder()
                        .setOwnerAddr(c.parseAddress("address"))
                        .setOriginAddr(c.parseAddress("address"))                
     .setBytecode(ByteString.copyFrom(Numeric.hexStringToByteArray(bytecode)))
                                    .setAbi(abi)
                                    // .setCallValue()
                                    // .setName()
                                    // .setConsumeUserResourcePercent()
                                    // .setOriginEnergyLimit()
                                    .build();
cntr.setWrapper(c);
TransactionBuilder builder = cntr.deploy();

📘

Call value

An error will occur if passing a call value to a non-payable constructor.

Deploy with Params

Take this simple contract as an example:

//SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.0;

contract test {
    uint256 public param;
    
    constructor (uint256 p) {
        param = p;
    }
    
    function t () public returns (uint256) {
        param += 1;
        return param;
    }
}

Set the initial value for param: 

List params = new ArrayList<Type>(); 
params.add(new Uint256(15));
//deploy with param
cntr.deploy(params);

trident-java will return the transaction hash after a successful broadcast.

Updated over 3 years ago