Is a Java object pass a value pass or a reference pass?

The question to tell the truth I don't feel much significance,

By first impressions and some ideas of C + +, object passing is a reference pass, because the value of the passed object can be changed.

But there are many people, do not know where to deduct from a sentence, Java only value is passed, there is no reference to pass. The theory is that Java objects pass through the value of the address as a parameter, not the object itself, so this is also a value pass.

After reading this theory, I was a little puzzled, C + + has never said that the reference passed by the object itself Ah, passed is also the address value.

So there's no reference passed in C + +?

I feel this is a word game, everyone said is the same thing, but not to fight the death.

So I still think that's the quote pass.

Is a Java object pass a value pass or a reference pass?