WebIn Java, the final keyword is used to denote constants. It can be used with variables, methods, and classes. Once any entity (variable, method or class) is declared final, it can be assigned only once. That is, the final variable cannot be reinitialized with another value. the final method cannot be overridden. the final class cannot be extended.

Immutable class in java. We can create immutable classes by

WebIn Java, final is a keyword that ensures immutability of primitive types, methods, variables classes, etc. It is treated as non-accessible modifier. If we want to use the final … WebA final variable must be a local variable and cannot be used in other classes. Using the final keyword with a method makes it constant, and we can't override it in the subclass. Using final with a class makes the class constant, and we cannot extend a final class. But a final class can extend other classes. Hence, the correct answer is option (c). how many years ago was 480 ce

Writing Final Classes and Methods - Princeton University

WebMar 16, 2024 · When a class is declared as final then it cannot be subclassed i.e. no other class can extend it. This is particularly useful, for example, when creating an immutable … Webfinal classes cannot be subclassed final methods cannot be overridden. (This method is in superclass) final methods can override. (Read this in grammatical way. This method is … WebMar 17, 2024 · We can create immutable classes by following these guidelines:. Declare the class as final, so it cannot be subclassed.; Make all fields private and final, so they … how many years ago was august 2015