Cannot make a static reference to the non-static method ethGetBlockByNumber(DefaultBlockParameter, boolean) from the type Ethereum

Question

I am not able to understand what is wrong with my code.

public void GetLatestBlock() throws Exception{
    List<EthBlock.TransactionResult> txs = Web3j.ethGetBlockByNumber(DefaultBlockParameterName.LATEST, 
    true).send().getBlock().getTransactions();
    //Ttxs =TestGet();
    
    txs.forEach(tx -> {
      EthBlock.TransactionObject transaction = (EthBlock.TransactionObject) tx.get();

      System.out.println(transaction.getFrom());
    });

It shows error : Cannot make a static reference to the non-static method ethGetBlockByNumber(DefaultBlockParameter, boolean) from the type Ethereum

I want to get lastblock's receipt for calculate the hashrate.

please give me some advice. Thanks a lot.

You need an instance of `Web3j` to call its instance methods. — shmosel, Sep 16 '22 at 06:41

score 1 · Accepted Answer · answered Sep 16 '22 at 06:52

Web3j.ethGetBlockByNumber is not static (there is no static modification in signature of ethGetBlockByNumber). You must replace class name Web3j by instance (object of type Web3j) Web3j.

For example:

Web3j web3j = new Web3j(); // Or another way to create object of type Web3j
web3j.ethGetBlockByNumber(DefaultBlockParameterName.LATEST, 
    true).send().getBlock().getTransactions();

Cannot make a static reference to the non-static method ethGetBlockByNumber(DefaultBlockParameter, boolean) from the type Ethereum

1 Answers1