Variable in Java Variables is the name of reserved area allocated in memory. Identifier are those whose value will change during execution of the program. Rules: First letter must be and alphabet. Length can be up to 32 characters. No special character is allowed except underscore (_). No keyword to be used. Local Variable: Declared within the body of method. Instance Variable: The variable which is associated with the object of that class. Static Variable: The variable which is associated with a class, not the object of the class.(Eg: used in counting of the object)
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