This is the first time using infura with a Web3j HttpClient. I have seen people use a code after the url like this: "infura.io/--here--". Am I using Infura correctly?

This is my code. (web3j v3.5.0)

Web3j web3 = Web3j.build(new HttpService("https://rinkeby.infura.io/"));
Web3ClientVersion web3ClientVersion = null;                

try {
    web3ClientVersion = web3.web3ClientVersion().send();
} catch(IOException e) {

String web3ClientVersionString = web3ClientVersion.getWeb3ClientVersion();
System.out.println("Web3 client version: " + web3ClientVersionString);

You need to create an infura account, and get the infura link with your API key at the end of it. It will look like a bunch of letters. Go to infura.io for this.

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