Memory in Java

(i) Classification of memory in Java

①: Stack Memory: A variable that holds the base type .

②: Heap Memory: Stores the objects and arrays created by new .

(ii) Memory allocation policy

① Static storage allocation: variable data structures are not allowed and nested or recursive structures are not allowed to appear.

② Stack Storage allocation: You only know what the program needs for the data area at run time. However , it is necessary to know the size of the module data area when entering a program module in operation . "The principle of advanced and post-out "

③ Heap Storage Allocation: A memory allocation that is responsible for data structures that are not determined by the storage requirements at compile time or at run-time module portals. Eg: variable-length strings and object instances.

Memory in Java