2nd October 2019

kodejava
14

What is the use of reference variable in Java?

A reference variable is declared to be of a specific type and that type can never be changed. Reference variables can be declared as static variables, instance variables, method parameters, or local variables. A reference variable that is declared as final can't never be reassigned to refer to a different object.

In this manner, what is the use of reference variable?

C++ References. Advertisements. A reference variable is an alias, that is, another name for an already existing variable. Once a reference is initialized with a variable, either the variable name or the reference name may be used to refer to the variable.

What is the difference between a reference and a pointer?

A very big difference between pointers and references in nearly every situation is that a pointer is an indepedent variable and can be assigned NEW address values; whereas a reference, once assigned, can never refer to any new object until the variable goes out of scope.

What is a reference in programming?

In computer science, a reference is a value that enables a program to indirectly access a particular datum, such as a variable's value or a record, in the computer's memory or in some other storage device. The reference is said to refer to the datum, and accessing the datum is called dereferencing the reference.
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