As a rule Honey Jar is very precocious and prolific in fruit. There may be a possibility that you were sold an imposter. 
Some jujubes will take years to fruit but HJ is not usually one of them especially when exposed to sun and heat. Shanxi Li seems to take a while. Chico should provide you with fruit about this time frame if 4 years old like the HJ. You said Sugar Cane was just okay. What are you looking for? Honey Jar is sweet and crisp and “juicy” (relative to other jujubes). Chico is more dense and has a really good sweet/sour taste at its prime. Sometimes Chico is not at its prime—the fruits later to ripen are often better and you need to let it get totally brown before eating. But a good Chico is fantastic. Shanxi Li is good but stingy with fruiting. My favorite that does well in my area is SiHong and @Bhawkins who is in Plano(?), similar soil to yours says it does well for him. It is a larger fruit and very dense but very consistent in taste. Orange Beauty is a SiHong offspring, is a bit smaller, a bit of tang as an aftertaste and is a very consistent fruit taste, but it has taken a while to get more productive for me. SiHong was much faster to fruit. Some people like Autumn Beauty. I’ve had one in the ground for 6 years and had very little fruit so far. This may be the first year I get more than 3-4 fruit.
I just can’t see a Honey Jar taking so long to fruit in our climate. Honey Jar is really really good and consistent and rarely late in fruiting.
We can move this conversation to another thread if you like.