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Java Reference Data Types

Java Question and Answer and Tutorial

    • Reference variables are created using defined constructors of the classes. They are used to access objects. These variables are declared to be of a specific type that cannot be changed. For example, Employee, Puppy etc.
    • Class objects, and various type of array variables come under reference data type.
    • Default value of any reference variable is null.
    • A reference variable can be used to refer to any object of the declared type or any compatible type.
    • Example : Animal animal = new Animal("giraffe");
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