web3j

web3jexample.java

    public RemoteCall<TransactionReceipt> stop() {
        Function function = new Function(
                "stop", 
                Arrays.<Type>asList(), 
                Collections.<TypeReference<?>>emptyList());
        return executeRemoteCallTransaction(function);
    }

    public RemoteCall<TransactionReceipt> approve(String _spender, BigInteger _value) {
        Function function = new Function(
                "approve", 
                Arrays.<Type>asList(new org.web3j.abi.datatypes.Address(_spender), 
                new org.web3j.abi.datatypes.generated.Uint256(_value)), 
                Collections.<TypeReference<?>>emptyList());
        return executeRemoteCallTransaction(function);
    }

    public RemoteCall<BigInteger> totalSupply() {
        Function function = new Function("totalSupply", 
                Arrays.<Type>asList(), 
                Arrays.<TypeReference<?>>asList(new TypeReference<Uint256>() {}));
        return executeRemoteCallSingleValueReturn(function, BigInteger.class);
    }

    public RemoteCall<TransactionReceipt> transferFrom(String _from, String _to, BigInteger _value) {
        Function function = new Function(
                "transferFrom", 
                Arrays.<Type>asList(new org.web3j.abi.datatypes.Address(_from), 
                new org.web3j.abi.datatypes.Address(_to), 
                new org.web3j.abi.datatypes.generated.Uint256(_value)), 
                Collections.<TypeReference<?>>emptyList());
        return executeRemoteCallTransaction(function);
    }