Recent questions tagged web3j

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Why to use libraries over Json-RPC to interact with Blockchain?

Jan 11, 2019 in Blockchain by slayer
 • 29,370 points • 1,252 views
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Web3js: how to catch ethereum contract exception?

Oct 22, 2018 in Blockchain by slayer
 • 29,370 points • 2,539 views
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Solidity Web3js: Invalid number of arguments to Solidity function error

Oct 22, 2018 in Blockchain by slayer
 • 29,370 points • 3,172 views
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How to read the ETH value and other token values from an account?

Oct 22, 2018 in Blockchain by digger
 • 26,740 points • 1,175 views
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Web3: No provider set error

Oct 22, 2018 in Blockchain by digger
 • 26,740 points • 2,498 views
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1 answer

How to get ethereum contract public variables?

Oct 17, 2018 in Blockchain by sabby
 • 4,370 points • 2,327 views
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sellprice and buyprice fixing in smart contract.

Oct 17, 2018 in Blockchain by sabby
 • 4,370 points • 1,043 views
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Integrating web3 in cloud functions module

Oct 17, 2018 in Blockchain by sabby
 • 4,370 points • 1,406 views
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1 answer

How to set the hex-encoded data field in a Web3j Ethereum transaction?

Oct 15, 2018 in Blockchain by digger
 • 26,740 points • 3,303 views
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Ethereum nodejs: Contract address returning as undefined in console

Oct 15, 2018 in Blockchain by slayer
 • 29,370 points • 2,234 views
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UnhandledPromiseRejectionWarning: Insufficient funds error in Ethereum: NodeJS web3

Oct 15, 2018 in Blockchain by slayer
 • 29,370 points • 1,688 views
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4 answers

Issue with getting web3.eth.accounts (MetaMask)

Oct 12, 2018 in Blockchain by sabby
 • 4,370 points • 5,935 views
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1 answer

Nodejs Express: Getting different output in console.log and callback

Oct 9, 2018 in Blockchain by slayer
 • 29,370 points • 787 views
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1 answer

Error when trying to deploy Ethereum smart contract using web3j

Oct 3, 2018 in Blockchain by digger
 • 26,740 points • 1,944 views
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1 answer

Web3j: Writing operations on a contract always throw “java.lang.ArrayIndexOutOfBoundsException”

Oct 1, 2018 in Blockchain by digger
 • 26,740 points • 979 views
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1 answer

Uncaught ReferenceError: web3 is not defined at window.onload

Sep 28, 2018 in Blockchain by digger
 • 26,740 points • 2,786 views
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Cannot access web3 object with typescript and ethereum

Sep 25, 2018 in Blockchain by digger
 • 26,740 points • 3,247 views
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Web3 1.0: What does `web3.eth.call(tx)` return for a contract creation?

Sep 17, 2018 in Blockchain by slayer
 • 29,370 points • 1,561 views
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1 answer

How to interact with a Smart Contract on private network using Web3.js?

Aug 22, 2018 in Blockchain by sabby
 • 4,370 points • 2,643 views
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2 answers

How do I interact with a smart contract on a private network through web3.js

Aug 17, 2018 in Blockchain by sabby
 • 4,370 points • 4,340 views
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1 answer

How to get return value from solidity contract?

Aug 16, 2018 in Blockchain by digger
 • 26,740 points • 5,538 views
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1 answer

How to solve “insufficient funds for gas * price + value” error?

Aug 1, 2018 in Blockchain by digger
 • 26,740 points • 6,277 views

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