The difference between the value transfer in java and the value transfer in java

The difference between the value transfer in java and the value transfer in java

(1) Value Transfer

In java, when a real parameter is passed through a value to the form parameter, the form parameter uses the value of the real parameter to initialize a temporary storage unit (in the stack). Modifying the value of the form parameter does not affect the real parameter.

(2) transfer a reference

In java, a method is called, and a real parameter is passed to the form parameter through reference. The form parameter uses the reference (address) of the real parameter to initialize a temporary storage unit. In this case, the form parameter points to the same object, therefore, modifying the parameter value affects the real parameter.