Java-Method 2

Basic and reference data types
Storage mode
Summary of data types

JVM run-time data region
Method area
Virtual Machine Stack!
Local method Stack
Heap!
Program counter

Virtual Machine Stack
It contains the basic types and object references known to the compiler, as well as the ReturnAddress
Heap
The JVM specification stipulates that all object instances and arrays are allocated memory here

Method of parameter transfer
Formal parameters do not affect argument value types
parameter is the basic data type: pass-through value
Formal parameters affect argument reference types
parameter is a reference data type: Address
Formal parameters do not affect argument string types
parameter is a string that needs to consider its immutability

Java-Method 2