Persistence
"Persistence" is another word for the life span of a piece of data. Persistence takes several forms. Some variables persist
for the life of a particular block of code or routine. Variables declared inside a for loop in C++ or Java are examples of this kind of persistence.
as long as you allow them to. In Java, variables created with new persist until they are garbage collected. In C++, variables created with new persist until you delete them.
for the life of a program. Global variables in most languages fit this description, as do static variables in C++ and Java.
forever. These variables might include values that you store in a database between executions of a program. For example, if you have an interactive program in which users can ...
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