Whether to pass the value or reference in a typical java issue

If you want to pass the value of a typical java question or pass the reference-Linux general technology-Linux programming and kernel information, read the following for details. Classic problems, but they are not easy to understand. Especially for java programmers with c-basics, they are more prone to confusion. Here I try to briefly describe them.

"Java functions pass values, while java functions PASS Parameters that reference objects"

These two sentences seem to have some conflicts at first, but they are facts, which has aroused confusion for many beginners. Here I try to explain this java feature using a simple example, which may be incomplete. I hope you can complete it.

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