CODEWITHSUNDEEP
javajava-8bitcoin
liorko
liorko

Reputation: 1674

Bitcoin Java RPC client - cannot create raw transaction

I'm using the java implementation of Bitcoin RPC client.
When I'm calling the createRawTransaction with int type the raw transaction created as expected:

BitcoindRpcClient.TxOutput txOut1 = new BitcoindRpcClient.BasicTxOutput(issuerAddress,
                    new BigDecimal(1));

When I'm trying to use double value instead of int:

BitcoindRpcClient.TxOutput txOut1 = new BitcoindRpcClient.BasicTxOutput(issuerAddress,
                    new BigDecimal(1.2));

I'm receiving this error: invalid amount.

When I'm trying it by using bitcoin-cli, it works as expected.

NOTE: I;m working on local testnet blockchain

Upvotes: 1

Views: 260

Answers (1)

Guillaume
Guillaume

Reputation: 14671

The output of:

System.out.println(new BigDecimal(1.2));
System.out.println(BigDecimal.valueOf(1.2));

Is:

1.1999999999999999555910790149937383830547332763671875
1.2

So the short answer is to use the preferred way to convert a double: BigDecimal.valueOf(1.2)

The long answer is that floatting numbers are complicated and double is an approximation for 1.2

Upvotes: 1

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