I've slung alot of code in multiple languages but am new to Salesforce and Apex. I see Apex is very much like Java. I see where one can execute @IsTest methods within a @IsTest Apex class. But how does one execute non-test code directly? Or must one always build and fire off a Job? Or do you write Java in VSC with the Salesforce CLI and Apex plugins? Any equivalent "Hello World" examples?
TIA,
Still-learning Steve