Java parameter Pass and reference pass summary

Whether it is passing the base type or passing the object, it is a copy of the pass, except that the object passes a copy of the reference, which points to the same object as the original reference.

The copy change of the base type does not affect the original value, nor does the same copy reference change affect the original reference (the copy reference refers to the object or the first address that the reference points to, and the change to the copy reference refers to the change that the reference points to).

However, because the replica reference and the original reference point to the same object, if the object is changed by a copy reference, the original reference is affected.