What are final variables?

What are final variables?

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Variables declared with the keyword final as a modifier are called final variables. They are so called because once initialized a value, their values cannot be modified. Any attempt made to modify the value of a pre-initialized final variable will result in a compile time error.

A final variable is declared as shown below:

final double IAMFINAL=0;

where, IAMFINAL is the name of variable whose data type is double. This statement declares the variable IAMFINAL as final and initializes it with the value 0 at the same time. Further attempts to change the value of IAMFINAL will result in a compile time error.

Note: The concept of final variables in Java is similar to constants in other programming languages.

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