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In Java, you can qualify local variables and method parameters with the final keyword.
public static void foo(final int x) {
final String qwerty = "bar";
}
Doing so results in not being able to reassign x and qwerty in the body of the method.
This practice nudges your code in the direction of immutability which is generally considered a plus. But, it also tends to clutter up code with "final" showing up everywhere. What is your opinion of the final keyword for local variables and method parameters in Java?