![]() ![]() For example, all Wrapper Classes like Integer, Float, etc. Usage 1: One is definitely to prevent inheritance, as final classes cannot be extended. Let us do discuss out these two different ways of initializing a final variable A blank final static variable can be initialized inside a static block.If you have more than one constructor in your class then it must be initialized in all of them, otherwise, a compile-time error will be thrown. A blank final variable can be initialized inside an instance-initializer block or inside the constructor.Below are the two ways to initialize a blank final variable. A final variable is called a blank final variable if it is not initialized while declaration. You can initialize a final variable when it is declared. ![]() There are three ways to initialize a final variable: A final variable can only be initialized once, either via an initializer or an assignment statement. We must initialize a final variable, otherwise, the compiler will throw a compile-time error. Static final double PI = 3.141592653589793 // a blank final static variable
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