The final local variable cannot be assigned

Question

I have an array of seats, and the array has two strings(selected and empty). On mouse click, I want to traverse the array and find the selected seat. When I press the button

Answer 1

Instead of defining a class member variable you can also use a mutable int to achieve the same.

void foo() {
    final MutableInt a = new MutableInt(3);
    new Runnable() {
        @Override
        public void run() {
           a.add(3);
        }
    };
}

Since MutableInt is not primitive type (hence passed by reference) and can be reassigned this works.