Web Reference: Jul 23, 2025 · Reference variable is used to point object/values. 2. Classes, interfaces, arrays, enumerations, and, annotations are reference types in Java. Reference variables hold the objects/values of reference types in Java. 3. Reference variable can also store null value. Nov 18, 2017 · Reference variable is a term to indicate/explain that a variable is only referring to a type and yet not instantiated. Also after instantiation it's type will be something that would depend on how or by which class a reference variable will be instantiated. Out of all of these, we've mainly been using the truth value (boolean), integer (int) and floating-point variables (double). Declaring a primitive variable causes the computer to reserve some memory where the value assigned to the variable can be stored. The size of the storage container reserved depends on type of the primitive. In the example bel...
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