In short; yes. But some people sometimes pronounce it like the English "J". When i say "jävlar" or "jäklar" i sometimes say it with the "tch"-sound.

It's not a big deal how you pronounce the name. And how we pronounce different names depends more on all the different accents in sweden. The letters Y and J are very simulare, I think it is the vocals you'll change in many names. For example, in the name John, the O is pronounced more as the second O in "com'on" in english(?) and would sound more like the O in the english word "on" in swedish.. Don't know if you see the difference here. hehe. It's easier if you actually hear a swedish person say these names for you, so that you can decide if there are any differences.

The Swedish J is not like an english Y at all. Our J is a voiced palatal fricative sound that buzzes when you pronounce it. Only certain words like ja or hej does sound similar to the English Y and even then its not exactly the same. Here's the Swedish J. (Has a audio clip) https://en.wikipedia.org/wiki/Voiced_palatal_fricative And here's the English Y. (Has a audio clip) https://en.wikipedia.org/wiki/Palatal_approximant I feel its important to tell you even if this question was asked several years ago because if you go around and say the Swedish J with a English Y sound it doesn't sound right at all.