Java: Whether the parameter of a method is a value or a reference

The parameters of a method in Java are always passed in a value -based manner.

The following methods are intended for object exchange, but are not actually implemented.

 Public void Swap (Simpleclass A,simpleclass b) {    Simpleclass temp=A;    A=b;    b=A;      }

Because the parameters of the incoming swap are actually a copy of object A and B (assumed to be AA,BB).

Although AA and BB are exchanged in the method, they no longer exist after the method ends.

A and B still refer to the object before calling swap.

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Actually with the C-pass pointer is a truth,

Suppose that the address of a pointer itself is 0XFFFFFF1A, and the point is (0x000001),

The pass-through function is the value of the pointer, which is 0x000001.

Java: Whether the parameter of a method is a value or a reference