How are named constants typically used in Java?

Named constants in Java are particularly valuable because they provide clarity in computations. By using a named constant, a programmer can give a meaningful name to a value, making the code more understandable and maintainable. For instance, instead of using the literal value 3.14 in multiple places, a developer might define it as final double PI = 3.14;. This makes it clear to anyone reading the code that this value represents the mathematical constant π, rather than simply appearing as a number without context. Using named constants also helps prevent errors—if the value needs to be changed, it can be modified in one place rather than having to locate and replace it throughout the entire code.

In relation to other choices, named constants are often preferred over omitting them since they enhance code readability. They are typically declared using uppercase letters, adhering to Java’s naming conventions for constants, unlike the suggestion that they are defined with lowercase letters. While it's true that named constants cannot be modified after their declaration, this characteristic alone does not capture their primary purpose, which centers on improving code clarity and comprehension. Thus, the correct choice underscores the benefit of using named constants in programming.