are local variables static or dynamic?
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In many languages, global variables are always static, but in some languages they are dynamic, while local variables are generally automatic, but may be static.
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The Three Types of Variables There are three basic levels of scope in Java: local, instance and static.
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Global variables are declared outside of all functions. Global variables are stored in Data Segment of process. ... If static variables are declared outside of all functions it will have global scope or it is declared within a function it will have scope within a function and it will retain until the life of program.
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Global variables are declared outside any function, and they can be accessed (used) on any function in the program. Local variables are declared inside a function, and can be used only inside that function. It is possible to have local variables with the same name in different functions.
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Static scoping is also called lexical scoping. In this scoping a variable always refers to its top level environment. ... In contrast, dynamic scope requires the programmer to anticipate all possible dynamic contexts.
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Local variables are slightly different; the compiler never assigns a default value to an uninitialized local variable. If you cannot initialize your local variable where it is declared, make sure to assign it a value before you attempt to use it.
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The main difference between static and normal variable is that static variable is initialized only once in the program and retains it's value, unlike the normal value that gets initialized every time. The above gives output as: Static=2.
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Automatic variables are stored in a "function call stack". Dynamic: The lifetime of a dynamic object begins when memory is allocated for the object (e.g., by a call to malloc() or using new) and ends when memory is deallocated (e.g., by a call to free() or using delete). Dynamic objects are stored in "the heap".
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Static variable are declared in the same place as instance variables, but with the keyword 'static' before the data type. While instance variables hold values that are associated with an individual object, static variables' values are associated with the class as a whole.
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Static casting is done by the compiler: it treats the result as the target type, no matter what. You do this when you're absolutely sure about the argument being of the target type. Dynamic casting is done at runtime, and thus requires runtime type information.
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Lets discuss the difference between static and dynamic binding in Java. Static binding happens at compile-time while dynamic binding happens at runtime. ... The binding of overloaded methods is static and the binding of overridden methods is dynamic.
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Static binding happens at compile-time while dynamic binding happens at runtime. Binding of private, static and final methods always happen at compile time since these methods cannot be overridden.
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A static variable is a class variable. A single copy of the static variable is created for all instances of the class. It can be directly accessed in a static method. An abstract class in Java is a class that cannot be instantiated.
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Global and static variables are initialized to their default values because it is in the C or C++ standards and it is free to assign a value by zero at compile time. Both static and global variable behave same to the generated object code.
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Well, static variables are variables that belong to a whole class rather than to a single instance of that class. "Transient" is actually just a notation to be used by the serialization machinery; it means "don't serialize this member."
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Automatic variables create a new each time when program's execution enters in the function and destroys when leaves. Static variable create once, when program's execution enters in the function first time, destroys when program's execution finishes, they do not again.
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A local static variable is a variable that can maintain its value from one function call to another and it will exist until the program ends. ... A global static variable is one that can only be accessed in the file where it is created.