I always thought Java was pass-by-reference.
However, I've seen a couple of blog posts (for example, this blog) that claim that it isn't.
I don't think I understand the distinction they're making.
What is the explanation?
转载于:https://stackoverflow.com/questions/40480/is-java-pass-by-reference-or-pass-by-value
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A few corrections to some posts.
C does NOT support pass by reference. It is ALWAYS pass by value. C++ does support pass by reference, but is not the default and is quite dangerous.
It doesn't matter what the value is in Java: primitive or address(roughly) of object, it is ALWAYS passed by value.
If a Java object "behaves" like it is being passed by reference, that is a property of mutability and has absolutely nothing to do with passing mechanisms.
I am not sure why this is so confusing, perhaps because so many Java "programmers" are not formally trained, and thus do not understand what is really going on in memory?
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