Your sentence doesn't quite work in the same way. 'Java-speak' means that only people who work with Java use and understand 'method' in that way; no other people do. However, 'shredded' means having defined muscles and little body fat in general. It is not a term used and understood only by gym-goers. So it's not 'gym-speak'; it's part of the wider language.

I see Claire's point, but I basically agree with you. One detail: when you are referring to a word as a word, it's good to either use quotes or italics. Otherwise, it can be confusing. example, The term method . . . . . when I first see that, I think it means the method of the term, or something like that. So it's better to say, The term 'method' . . . then we know you mean the word 'method'.

‘Shredded’ is a word describing someone who is lean with well-defined muscles. ‘Gym-speak’ isn’t accurate. ‘Shredded’ is an adjective describing a person, not a person.