Memory Management at Runtime

In computing, memory is a device or system that is used to store information for immediate use in a computer or related computer hardware and digital electronic devices. The term memory is often synonymous with the term primary storage or main memory. An archaic synonym for memory is store. Wikipedia

Classes of Memory

Generally, there are 3 classes of Memory

a. Static memory.

Allocated for the entire lifetime of the program.

b. Automatic memory.

Allocated and freed automatically when functions or methods are executed.

c. Dynamic memory.

Explicitly allocated by the program and freed explicitly—or by an automatic program called the GARBAGE COLLECTOR.

Rules

• Top Level variables and static fields belong to Static Memory.
• Function Args and local Variables belong to automatic memory.
• Memory is explicitly allocated using the NEW operator, belonging to dynamic memory.

The most important element of a programming language runtime


                                                    is memory         

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