<dependency> <groupId>org.web3j</groupId> <artifactId>core</artifactId> <version>4.8.7</version> </dependency> Web3j web3 = Web3j.build(new HttpService("https://ropsten.infura.io/v3/your-infura-project-id")); EthGetBalance balance = web3.ethGetBalance("0x123456789...", DefaultBlockParameterName.LATEST).send(); BigInteger accountBalance = balance.getBalance(); System.out.println("Account balance: " + accountBalance);