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Yes, it is. The author of the book mentions that this feature is valid in Java, I'll edit the post. Good question.
If you declare a final variable later on you cannot modify or, assign values to it. Moreover, like instance variables, final variables will not be initialized with default values.
Still, this is a common question asked by many programmers that can we declare any variable without any value? The answer is: "Yes! We can declare such type of variable". To declare a variable without any variable, just assign None.
An uninitialized variable is a variable that has not been given a value by the program (generally through initialization or assignment). Using the value stored in an uninitialized variable will result in undefined behavior.
I'm reading Gilles Dowek's Principles of Programming Languanges:
He says that it's also possible to declare a variable without giving it an initial value and also that we must be careful not to use a variable which has been declared without an initial value and that has not been assigned a value. This produces an error.
Note: The book's author mentions the possibility of declaring variables without an initial value on Java.
So, why is this declaration of variables valid? When am I going to use it?
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